Eaglehawk Target: Record-Breaking Intersection Uncovered by Great Boulder

<p> <img data-document-id="cms/api/amp/image/AA1CptrL" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1CptrL.jpg"/> </p> <p> Great Boulder Resources (ASX:GBR) Has achieved its highest-ever intersection – with gold assays exceeding 79 grams per tonne – at its Eaglehawk prospect in Western Australia, as part of a reverse circulation drilling campaign. </p> <p> <strong> Tune into the HotCopper podcast for comprehensive debates and deep dives into this week’s most significant news stories. Across platforms like Spotify, Apple, and others </strong> . </p> <p> A measurement of three meters containing 46.70 grams per tonne of gold starting from 139 meters deep showed up during the project, with an even richer segment of one meter holding 79.50 grams per tonne found between 140 meters down. This result surpassed the earlier best find of 29 meters grading 4.79 grams per tonne of gold beginning at 76 meters within another drill hole at Eaglehawk. </p> <p> Reverse circulation drilling conducted on these targets, as well as Mulga Bill, yielded numerous significant outcomes. These include two meters with an assay of 11.15 grams per tonne gold starting at 166 meters depth; nine meters grading 1.99 grams per tonne gold beginning at 223 meters, which includes two meters averaging 7.42 grams per tonne gold from 224 meters down within the Mulga Bill zone; additionally, there were two meters assaying 5.40 grams per tonne gold found at 137 meters depth at the Eaglehawk site. </p> <p> Great Boulder is currently exploring the Eaglehawk site through ongoing aircore drilling activities. Additionally, the firm is anticipating assay outcomes for the last four reverse circulation boreholes finished at the Side Well project. </p> <p> The managing director, Andrew Paterson, stated that the outcome was remarkable for Eaglehawk, asserting: "This achievement reflects the success of our enhanced exploration strategies aimed at these exceptionally high-grade veins located both along and inside the dacite contact, making it the most significant drill intersection we have encountered so far." </p> <p> Open the Youtube video </p> <p> <strong> More market news </strong> </p> <p> <strong> Levy beef: Trump imposes 10% tariffs on "Liberation Day" as a blow to Oz </strong> </p> <p> <strong> Meet GeoGeorge: The HotCopper user was so precise with their insights that they landed a job as an analyst. </strong> </p> <p> He went on: "These findings represent a newly identified zone of high-grade quartz-sulfide vein mineralization within the Eaglehawk region, which remains relatively unexplored. This location stands out as a prime candidate for further investigation during our upcoming reverse circulation drilling campaign." </p> <p> The Side Well project is situated near Meekatharra in Western Australia. </p> <p> Great Boulder The shares have been trading at 7.3 cents. </p> <p> <strong> Join the discussion: </strong> See what HotCopper users are saying about Great Boulder Resources And join in the discussions that drive market movements. </p> <p> The content presented here serves informational purposes solely and must not be considered as investment advice. We encourage viewers to perform independent research and seek guidance from a qualified financial adviser prior to making any investment choices. To review the complete disclaimer details, kindly proceed by clicking. here . </p>

Eaglehawk Target: Record-Breaking Intersection Uncovered by Great Boulder

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Great Boulder Resources (ASX:GBR) Has achieved its highest-ever intersection – with gold assays exceeding 79 grams per tonne – at its Eaglehawk prospect in Western Australia, as part of a reverse…

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Risiko Hembusan Gas, Akses ke Gunung Gede Pangrango Kembali Ditutup

<img data-document-id="cms/api/amp/image/AA1C9FZm" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1C9FZm.jpg"/> <p> <span> <b> DIWIDA </b> </span> , <span> <b> Cianjur </b> </span> - Kepala Kantor Taman Nasional Nasional <strong> Gunung Gede </strong> Pangrango merilis surat edaran tentang pemanjangan penutupan rute mendaki Gunung Gede-Pangrango pada tanggal 3 sampai 7 April 2025. Keputusan ini diambil sebagai respons terhadap kenaikan frekuensi gempa Vulkanik yang bisa memicu erupsi freatik atau pelepasan uap dari gunung api di Jawa Barat tersebut. </p> <p> Agus Deni dari Humas Balai Besar Taman Nasional Gunung Gede Pangrango menyampaikan <strong> pendakian </strong> Gunung Gede Pangrango memang direncanakan untuk dibuka lagi mulai hari Rabu, tanggal 3 April 2025, setelah tertutup selama tiga bulan. Namun demikian, keputusan ini batal lantaran adanya informasi dari Badan Geologi yang menunjukkan ada peningkatan dalam aktivitas Vulkanik di daerah tersebut. </p> <p> "Informasi tentang penutupan berdasarkan Surat Edaran Balai Besar Taman Nasional Gunung Gede Pangrango dengan Nomor SE 18 Tahun 2025," demikian disampaikan Agus kepada para jurnalis saat berada di Cianjur pada hari Rabu, tanggal 2 April 2025. </p> <p> Badan Geologi sebelumnya mengumumkan adanya kenaikan aktivitas gempa vulkanik yang menunjukkan peningkatan tekanan di dalam Gunung Gede. Kondisi ini memiliki potensi untuk merangsang erupsi. <strong> erupsi </strong> erupsi dan tekanan gas di area kaldera. </p> <p> Terjadi 21 kali guncangan berturut-turut sepanjang 6 jam pada Hari Selasa, tanggal 1 April 2025. Sebenarnya, jumlah tersebut jauh melampaui rata-rata harian dengan frekuensi hingga satu getaran bumi saja setiap harinya oleh Gunung Gede. Meskipun demikian, Badan Geologi tetap mempertahankan tingkat keadaannya sebagai Normal untuk Gunung Gede. Tetapi para penduduk serta tamu dilarang keras mendekati atau menginap di daerah yang memiliki diameter kurang lebih 600 meter dari lokasi Kawah Wadon. </p> <p> "Terdapat kemungkinan adanya gas dari Gunung Api yang bisa mengancam keselamatan, apalagi kalau dekat dengan area kawah. Oleh karena itu, kami menutup sementara akses untuk mendaki," jelas Agus. </p> <p> Dia mengkonfirmasi bahwa berita tentang penutupan pendakian sudah disebarluaskan kepada para pendaki potensial, khususnya bagi mereka yang mendaftar untuk mendaki tanggal 3 April. Menurut Agus, peserta dapat merencanakan ulang aktivitas ini. </p> <p> "Kami imbau agar reschedule. Kami pun akan menempatkan petugas di semua rute pendakian guna memastikan tak ada pendaki yang melanggar aturan," ujarnya. </p>

Risiko Hembusan Gas, Akses ke Gunung Gede Pangrango Kembali Ditutup

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DIWIDA , Cianjur - Kepala Kantor Taman Nasional Nasional Gunung Gede Pangrango merilis surat edaran tentang pemanjangan penutupan rute mendaki Gunung Gede-Pangrango…

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Gempa Kuat di Luwu Timur, Sulawesi Selatan: Dalam 10 km dari Permukaan Bumi | Perbarui Informasi dan Analisis BMKG Sekarang

<p> <strong> DIWIDA </strong> Simak kabar terbaru dari Badan Meteorologi Klimatologi dan Geofisika atau BMKG yang baru saja merilis info gempa terkini di Luwu Timur, Provinsi Sulawesi Selatan pada Kamis 3 April 2025. </p> <p> Info BMKG, gempa terkini di barat laut Luwu Timur, Sulawesi Selatan miliki magnitudo 3.2. </p> <p> Waktu terjadinya gempa hari ini di barat laut Luwu Timur, Sulawesi Selatan sekira pukul 05:53:44 WIB. </p> <p> Lokasi gempa terkini di barat laut Luwu Timur, Sulawesi Selatan berada di titik koordinat 2.34 LS, 120.87 BT. </p> <p> Dalam rilisnya, BMKG sebut pusat gempa terkini berada 42 km di barat laut Luwu Timur, Sulawesi Selatan. </p> <p> BMKG sebut gempa terkini di barat laut Luwu Timur, Sulawesi Selatan terjadi di kedalaman 10 Km. </p> <p> Informasi gempa terkini di barat laut Luwu Timur, Sulawesi Selatan disampaikan BMKG di laman X resmi @infoBMKG. </p> <p> "#Gempa Mag:3.2, 03-Apr-2025 05:53:44WIB, Lok:2.34LS, 120.87BT (42 km BaratLaut LUWUTIMUR-SULSEL), Kedlmn:10 Km #BMKG </p> <p> <strong> Disclaimer: </strong> Informasi ini mengutamakan kecepatan, sehingga hasil pengolahan data belum stabil dan bisa berubah seiring kelengkapan data," tulis BMKG di laman X resmi @infoBMKG. </p> <img data-document-id="cms/api/amp/image/AA1CbhVh" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1CbhVh.jpg"/> <p> <strong> Berdasarkan skala MMI yang dikutip dari laman BMKG, berikut info MMI yang dapat dipelajari. </strong> </p> <p> I MMI </p> <p> Getaran gempa tidak dapat dirasakan kecuali dalam keadaan luarbiasa oleh beberapa orang. </p> <p> II MMI </p> <p> Getaran atau goncangan gempa dirasakan oleh beberapa orang, benda-benda ringan yang digantung seperti lampu gantung bergoyang. </p> <p> III MMI </p> <p> Getaran gempa dirasakan nyata dalam rumah. </p> <p> Getaran terasa seakan-akan ada naik di dalam truk yang berjalan. </p> <p> IV MMI </p> <p> Pada saat siang hari dapat dirasakan oleh orang banyak di dalam rumah, di luar rumah oleh beberapa orang, gerabah pecah, jendela/pintu bergoyang hingga berderik dan dinding berbunyi. </p> <p> V MMI </p> <p> Getaran gempa bumi dapat dirasakan oleh hampir semua orang, orang-orang berlarian, gerabah pecah, barang-barang terpelanting, tiang-tiang dan benda besar tampak bergoyang, bandul lonceng dapat berhenti. </p> <p> VI MMI </p> <p> Getaran gempa bumi dirasakan oleh semua orang. </p> <p> Banyak yang kaget dan langsung menghindar, hiasan dinding lepas jatuh sementara bagian cerobong asap pabrik juga ikut rusak, namun hanya sebatas kerusakan kecil. </p> <p> VII MMI </p> <p> Semua orang di rumah keluar. </p> <p> Kerusakan ringan pada rumah dengan bangunan dan kontruksi yang baik. </p> <p> Sedangkan pada bangunan dengan konstruksi kurang baik terjadi retakan bahkan hancur, cerobong asap pecah. </p> <p> Dan getaran dapat dirasakan oleh orang yang sedang naik kendaraan. </p> <p> VIII MMI </p> <p> Kerusakan ringan pada bangunan dengan konstruksi kuat. </p> <p> Keretakan pada bangunan dengan konstruksi kurang baik, dinding terlepas dari rangka rumah, cerobong asap pabrik dan monumen roboh, air berubah keruh. </p> <p> IX MMI </p> <p> Kerusakan pada bangunan dengan konstruksi kuat, rangka rumah menjadi tidak lurus, banyak terjadi keretakan. </p> <p> Rumah tampak bergeser dari pondasi awal. Pipi-pipa dalam rumah putus. </p> <p> X MMI </p> <p> Bangunan dari kayu yang kuat rusak, rangka rumah lepas dari pondamennya, tanah terbelah rel melengkung, tanah longsor di tiap-tiap sungai dan di tanah-tanah yang curam. </p> <p> XI MMI </p> <p> Gedung-gedung yang hanya segelintir yang tetap bertahan. </p> <p> Jembatan rusak, terjadi lembah. </p> <p> Saluran bawah tanah menjadi tak berguna, permukaan tanah retak, dan jalur kereta pun jadi membengkok. </p> <p> XII MMI </p> <p> Hilang sempurna, terlihat ombak di atas tanah. </p> <p> Lanskap menjadi suram, objek dilempar ke angkasa. </p> <p> <strong> (*) </strong> </p> <p> <strong> Berita Gempa Terkini </strong> </p> <p> <strong> (DIWIDA/Amiruddin) </strong> </p> <p> <strong> Periksa Kabar Terbaru Tribun Kaltara di Google News </strong> </p>

Gempa Kuat di Luwu Timur, Sulawesi Selatan: Dalam 10 km dari Permukaan Bumi | Perbarui Informasi dan Analisis BMKG Sekarang

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DIWIDA Simak kabar terbaru dari Badan Meteorologi Klimatologi dan Geofisika atau BMKG yang baru saja merilis info gempa terkini di Luwu Timur, Provinsi Sulawesi Selatan pada Kamis 3 April 2025…

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Alaska's Vulnerable Regions Revealed: Mount Spurr Eruption Threatens Key Areas

<img data-document-id="cms/api/amp/video/AA1BN6bQ" data-reference="video"/> <p> Alaska's Mount Spurr is exhibiting indications of increased activity, prompting scientists to warn that the volcano might be poised to erupt for the first time in 30 years. </p> <img data-document-id="cms/api/amp/image/AA1BNf3e" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1BNf3e.jpg"/> <p> The Alaska Volcano Observatory (AVO) has observed steady and ongoing ground swelling, which indicates possible magma buildup underneath. </p> <p> The AVO stated that an eruption is "possible within the coming weeks or months, though it is not guaranteed." </p> <h2> <strong> Why It Matters </strong> </h2> <p> Located approximately 80 miles west of Anchorage, Alaska’s largest city by population, Mount Spurr is among the state's most monitored volcanoes. Its last eruption occurred in 1992, covering south Alaska with ash and disrupting aviation services. </p> <p> When that volcano erupted, Anchorage International Airport closed down for 20 hours. If such an incident happened again, we might face comparable consequences. </p> <h2> <strong> What To Know </strong> </h2> <p> The Alaska Volcano Observatory has confirmed that Mount Spurr is exhibiting signs of activity. indications of revived volcanic activity including heightened levels of gas emissions, increased seismic activity, and observable ground deformations. </p> <p> On March 7, overflights recorded a sulfur dioxide emission rate of approximately 440 tons daily. Additionally, elevated levels of carbon dioxide were observed both at the summit and near the Crater Peak vent. </p> <p> "The ongoing disturbances at Mount Spurr suggest that fresh magma has penetrated the Earth's crust under the volcano, thereby increasing the likelihood of an eruption," stated the AVO update. </p> <p> Chances are high that magma has been building up under the summit of Mount Spurr over several months now. Recent gas readings indicate that a new route might have formed toward the Crater Peak vent, allowing fresh magma to ascend and potentially cause an eruption at this location. All recorded eruptions have taken place at Crater Peak. The most recent documented eruption from the top of Spurr happened thousands of years ago. </p> <p> The AVO indicated that it was probable the area might experience an explosive eruption akin to those in 1953 and 1992, each originating from the Crater Peak vent and lasting several hours. </p> <p> These past eruptions propelled ash clouds for hundreds of miles downwind and left behind as much as a quarter-inch layer of ash over portions of southern-central Alaska. The upper Chakachatna River Valley might be impacted by pyroclastic flows and mudflows, also known as lahars. </p> <p> DIWIDA reported this week that the observatory’s functioning was under threat due to the Department of Government Efficiency issued a lease termination which endangered its Anchorage base. In Alaska, this was Republican Representative Nick Begich stepped in to assist in ensuring the facility remained operational. </p> <h2> <strong> What People Are Saying </strong> </h2> <p> <strong> The Department of the Interior </strong> <strong> said on X </strong> <strong> in February: </strong> Experts specializing in volcanoes are keeping a close eye on Mount Spurr in Alaska due to an ongoing sequence of minor, shallow seismic events under the volcano, which suggest continued eruptive activity. Aerial footage captured on February 7, 2025, reveals a tiny lake situated within the snow-covered crater. </p> <h2> <strong> What Happens Next </strong> </h2> <p> The AVO states they intend to carry out regular flyovers to assess gas emissions, examine surface alterations, and gauge ground temperature levels. </p> <p> "The consideration includes installing extra surveillance equipment due to the ongoing instability," it stated. </p> <p> <strong> Related Articles </strong> <ul> <li> Dogecoin News: Block PreventsClosure of Alaska Volcano Observatory During Eruption Risk </li> <li> Updated Social Security Regulations May Pose Challenges for Alaskans </li> <li> A Family of Three Emerges Unharmed Following Small Aircraft Crash </li> <li> Woman Organizes 91-Year-Old Grandmother's Medication Drawer; Netizens Are Left Wondering </li> </ul> </p> <p> Start your unlimited DIWIDAtrial </p>

Alaska's Vulnerable Regions Revealed: Mount Spurr Eruption Threatens Key Areas

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Alaska's Mount Spurr is exhibiting indications of increased activity, prompting scientists to warn that the volcano might be poised to erupt for the first time in 30 years. The Alaska Volcano Obser…

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Scientists Unveil New Continent Hiding in Plain Sight

<img data-document-id="cms/api/amp/video/BB1q8Gqz" data-reference="video"/> <p> Elementary school geography presents the world in such a tidy manner. </p> <p> For instance, it informs us that there are seven continents on our planet; however, reality is much more intricate. </p> <p> Researchers are constantly encountering lost landmasses those that form crucial parts of the mosaic describing our planet’s geological past. </p> <p> Now, a whole new continent has been discovered hiding under the frozen waters of the north Atlantic Ocean . </p> <p> The finding occurred in the vicinity of the Davis Strait, a substantial body of water situated between Canada ’s Baffin Island and Greenland . </p> <p> The strait came into existence millions of years ago due to the movement of tectonic plates between the two islands, which altered the landscape. Earth’s crust. </p> <p> As a result, a substantial continental crust developed within the oceanic environment, and this area is now recognized as a recently identified primitive microcontinent. </p> <img data-document-id="cms/api/amp/image/BB1q8PLV" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/BB1q8PLV.jpg"/> <p> In a study that appeared in the journal Gondwana Research A group of researchers from the UK and Sweden mapped out the movement of tectonic plates that took place in the region near Davis Strait approximately 33 to 61 million years ago. </p> <p> They discovered that this led to the creation of an exceptionally thick layer of continental crust, measuring from 12 to 15 miles in thickness, located off-shore within Greenland’s western water bodies. Popular Mechanics notes. </p> <p> It has since been named the Davis Strait proto-microcontinent. </p> <p> As per the specialists, examining this newly discovered landmass and how it formed will enhance our comprehension of comparable geographical formations. </p> <p> “The mechanism for microcontinent formation we have identified could potentially be applied broadly to various microcontinents worldwide,” the researchers stated in their document. </p> <p> Additional research is warranted to comprehend the impact of alterations in plate movement and transpression on the breaking off of microcontinents. </p> <p> The tale was initially released on July 17, 2024. </p> <p> <strong> Sign up </strong> <strong> For our complimentary DIwida.Newsweekly newsletter </strong> </p> <p> <strong> How to join </strong> <strong> The DIwida.News's complimentary WhatsApp channel </strong> </p> <strong> DIwida.News delivers sharp, fiercely progressive coverage with an emphasis on viral content, celebrities, science, technology, and beyond. It offers up-to-the-minute insights through Gen-Z-focused articles, popular TikTok trend breakdowns, influencer deep-dives, along with critical updates on key issues. Whether you're looking for the newest online fads or detailed analyses presented via interactive maps and graphs, this platform transforms intricate narratives into compelling reads. Start your reading experience at the beginning of each piece and stay tuned to DIwida.News right from the start. </strong>

Scientists Unveil New Continent Hiding in Plain Sight

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Elementary school geography presents the world in such a tidy manner. For instance, it informs us that there are seven continents on our planet; however, reality is much more intricate. Researcher…

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Scientists Warn: US Volcano on Brink of Eruption

<img data-document-id="cms/api/amp/image/AA1C9lGZ" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1C9lGZ.jpg"/> <p> <strong> Scientists have identified early warning signs of a potential volcanic eruption at Mount Spurr , located in Alaska. </strong> </p> <p> The most recent eruption took place in 1992; however, the volcano has displayed growing activity in the past several months. As reported by Alaska Volcano Observatory Now, an eruption seems probable according to AVO. </p> <p> Specialists at the observatory believe that an eruption might happen within just three weeks. In their latest document, they stated that a " robust plume had been noticed at the volcano's peak. </p> <p> The AVO mentioned in its most recent update: " The rise in gas emissions suggests that fresh magma has entered the Earth's crust under the volcano, indicating that while an eruption could happen within the coming weeks or months, it is not guaranteed. ." </p> <p> Nevertheless, researchers pointed out that the plume by itself does not automatically indicate an imminent eruption. </p> <p> " These findings, combined with the advantageous atmospheric conditions, indicate that the strong plume from Mount Spurr in recent days likely did not stem from heightened volcanic activity. ," they added. </p> <p> (QG - Source: The Daily Mail - Image Credit: © Unsplash) </p>

Scientists Warn: US Volcano on Brink of Eruption

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Scientists have identified early warning signs of a potential volcanic eruption at Mount Spurr , located in Alaska. The most recent eruption took place in 1992; however, the volcano has di…

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Scientists Unveil Mysterious "Yellow Brick Road" Beneath the Pacific Ocean

<img data-document-id="cms/api/amp/image/AA1tt2iU" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1tt2iU.jpg"/> <p> A mission to a submerged mountain range located northeast of the Hawaiian archipelago uncovered something unexpected in 2022—a long-dormant subaqueous lakebed covered with what appears to be a golden cobblestone pathway reminiscent of Oz. </p> <p> The unsettling sight was stumbled upon by the research ship Nautilus during its examination of the Liliʻuokalani ridge. Papahānaumokuākea Marine National Monument (PMNM). </p> <p> PMNM is among the biggest marine protected zones globally, surpassing the total area of all U.S. national parks combined, yet our exploration has barely begun. approximately 3 percent of its ocean floor . </p> <span data-embed-id="acc5c529a480468e8787fb796e678f53"> </span> <p> Scientists with the Ocean Exploration Trust are venturing into these uncharted territories located over 3,000 meters beneath the ocean’s surface, and the exciting news is that everyone has the opportunity to witness this expedition. </p> <p> A highlight reel The video content from the expedition released on YouTube in April 2022 documented the instant when scientists controlling the submersible accidentally came across what they dubbed the "road to Oz." </p> <div class="aspect-w-16 aspect-h-9 youtube-iframe relative"> <img data-document-id="cms/api/amp/video/AA1ttbOX" data-reference="video"/> </div> <p> "The path leads to Atlantis," a researcher on the radio is overheard declaring. </p> <p> "The Yellow Brick Road?" another voice challenges. </p> <p> "I find this quite strange," remarks another member of the team. </p> <p> Seriously? This is insane. </p> <img data-document-id="cms/api/amp/image/AA1ttbOQ" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1ttbOQ.jpg"/> <p> Even though it sits beneath approximately one thousand meters of seawater, the lakebed found by scientists at the peak of the Nootka seamount appears unexpectedly arid. </p> <p> On the radio, the team observes that the ground appears nearly like a "baked crust" which might come away easily. </p> <p> In a small area, the volcanic rock has broken apart in a pattern that closely resembles brickwork. </p> <p> The distinctive 90-degree cracks probably stem from thermal stresses caused by repeated heating and cooling at this outer edge of the heated region, reads A title for the YouTube video. </p> <p> Initially, this impact might be misinterpreted as a gateway to an incredible new realm. In some respects, though, that interpretation isn’t entirely off base. </p> <p> Following the yellow brick road signifies that we're moving in the correct path and might swiftly uncover much more about Earth's concealed geological secrets. </p> <p> For additional information regarding the 2022 E/V Nautilus mission, you can delve into further reading. here . </p> <p> <em> A previous iteration of this piece was published in May 2022. </em> </p>

Scientists Unveil Mysterious "Yellow Brick Road" Beneath the Pacific Ocean

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A mission to a submerged mountain range located northeast of the Hawaiian archipelago uncovered something unexpected in 2022—a long-dormant subaqueous lakebed covered with what appears to be a golde…

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El hallazgo de un antiguo glaciar revela pistas sobre cómo evolucionó la vida compleja en la Tierra, según los científicos

<p> Hace más de 500 millones de años, en una Tierra gélida y cubierta de hielo, los glaciares agitaron los ingredientes de la vida compleja al arrasar los minerales terrestres y depositarlos después en el océano, según un nuevo estudio. </p> <p> Centímetro a centímetro, a medida que los enormes glaciares se arrastraban sobre la tierra helada hacia un mar cubierto de hielo, escarbaban el suelo bajo ellos, excavando y raspando rocas de la corteza terrestre. Cuando los glaciares acabaron derritiéndose, liberaron en el océano un torrente de sustancias químicas terrestres, según informaron recientemente los investigadores. Los minerales arrastrados a tierra por esta “escoba glaciar” alteraron la química marina e infundieron a los océanos nutrientes que, según dicen, pueden haber determinado la evolución de la vida compleja. </p> <p> Este antiguo periodo de heladas profundas, conocido como la era Neoproterozoica , o “Tierra bola de nieve”, duró desde hace unos 1.000 millones a 543 millones de años. </p> <p> Durante ese tiempo, las masas de tierra se consolidaron en un supercontinente llamado Rodinia y luego volvieron a separarse. Las primeras formas de vida de la Tierra, como los microbios, las cianobacterias, las esponjas y los organismos que habitaban los fondos marinos, poblaron los océanos. Tras el final del Neoproterozoico llegó el auge de la vida más compleja, con la primera aparición de criaturas marinas que lucían armaduras, caparazones y púas. </p> <p> Los científicos han atribuido este auge evolutivo al aumento de los niveles de oxígeno en la atmósfera terrestre y en las aguas poco profundas de los océanos. Y ahora, una investigación publicada el martes en la revista académica Geology Propone que el movimiento de los glaciares antiguos pudo haber modelado directamente modificaciones químicas en los océanos, las cuales fueron cruciales para la evolución de organismos más complejos. </p> <p> El análisis de la "Tiempos glaciares" proporciona un vistazo al historial climático terrestre y brinda importantes insights sobre los cambios climáticos actuales, señaló el investigador principal del estudio, el Dr. Chris Kirkland. </p> <p> “Nuestro registro geológico en tiempo profundo indica cómo el cambio de una parte de la Tierra afecta a otra”, afirmó. Ahora mismo, el dramático calentamiento del planeta que marca la crisis climática provocada por el ser humano se está produciendo a una velocidad vertiginosa en comparación con estos antiguos procesos que duraron millones de años. </p> <p> Esta velocidad incrementada reduce la habilidad del planeta para equilibrarse por sí mismo de manera natural, destacando así la importancia crucial de enfrentar el calentamiento global provocado por humanos. </p> <h3> <strong> De la Tierra bola de nieve al planeta invernadero </strong> </h3> <p> Se conoce que el desplazamiento de los glaciares, conocido como glaciarización, lleva consigo y traslada sedimento continental hacia los océanos, lagunas y arroyos, sentando así las bases para las cadenas tróficas acuáticas. No obstante, aquellos científicos dedicados al estudio del planeta prehistórico carecían hasta ahora de certezas sobre si los glaciares neoproterozoicos tenían algún tipo de movimiento, incluso menos aún sabían si eran capaces de moverse lo bastante como para erosionar el lecho rocoso debajo de ellos e introducir minerales en el mar. </p> <p> "La teoría sugerida era que la extensa erosión glacial en las áreas internas del continente pudo deberse al hielo de una 'Tierra bola de nieve'", aclara Kirkland, quien es profesor en la Facultad de Ciencias Planetarias y Terrestres de la Universidad Curtin en Perth, Australia. "No obstante, ciertos detalles de esa suposición eran confusos debido a que este hielo tal vez no se desplazó mucho o simplemente fluyó". </p> <img data-document-id="cms/api/amp/image/AA1zRUlm" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1zRUlm.jpg"/> <p> Kirkland y sus colegas encontraron respuestas en Escocia e Irlanda del Norte, donde estudiaron sedimentos de formaciones rocosas que datan del Neoproterozoico. El equipo se fijó en los zircones, minerales cristalizados que son excepcionalmente duraderos y pueden resistir acontecimientos geológicos extremos. Los zircones también contienen uranio; al medir las etapas de la desintegración del uranio en los zircones, los geólogos utilizan los minerales como cronómetros para estudiar el pasado de la Tierra. </p> <p> Los investigadores examinaron sedimentos que databan de la época en que la Tierra estaba cubierta de hielo y del periodo de la “Tierra invernadero”, millones de años después, cuando el hielo desapareció, y descubrieron que la composición mineral de los sedimentos de la “Tierra bola de nieve” difería drásticamente de la de los sedimentos posteriores. </p> <p> “Recuperamos patrones distintivos en las poblaciones de estos granos minerales”, dijo Kirkland a CNN en un correo electrónico. “En esencia, la huella dactilar del ‘ADN’ de estas rocas sedimentarias cambió”. </p> <p> Los hallazgos parecen reforzar “en cierta medida” la noción de glaciación activa, afirmó el Dr. Graham Shields, profesor de Geología del University College de Londres. Shields no participó en la nueva investigación. Sin embargo, el estudio no incluyó datos de un intervalo glaciar significativo llamado Marinoan , que marcó el final de la “Tierra bola de nieve”, dijo a CNN en un correo electrónico. Shields también se mostró cauto a la hora de vincular directamente la erosión glaciar con la evolución de la vida compleja. </p> <p> “Esta conexión se ha propuesto antes, pero es controvertida porque el vínculo se asume en lugar de explicarse”, dijo Shields. “Un cambio drástico del paisaje que provoque la aparición de animales macroscópicos es una idea estupenda, pero el artículo introduce una hipótesis sobre la erosión glaciar/el clima que puede ponerse a prueba, en lugar de zanjar el debate”. </p> <h3> <strong> El deshielo masivo de los glaciares transforma los océanos </strong> </h3> <p> Las rocas de la época de la “Tierra bola de nieve” contenían minerales más antiguos, pero también presentaban un abanico de edades minerales, lo que insinuaba que las rocas quedaron expuestas y se erosionaron con el tiempo por el movimiento de raspado de los glaciares. </p> <p> Estas pruebas indicaron a los científicos que los glaciares del Neoproterozoico eran móviles. Las rocas más jóvenes, de cuando la “Tierra bola de nieve” se estaba descongelando, tenían un rango más estrecho de edades minerales, y los granos más frágiles estaban ausentes, lo que sugería que el agua que fluía había disuelto material que antes estaba molido. </p> <p> En el ocaso del Neoproterozoico, uno de los cambios conocidos en la química oceánica fue un aumento del uranio. Otras investigaciones habían explicado anteriormente este aumento como resultado del incremento del oxígeno atmosférico, “sin embargo, nuestros datos implican que el aporte de elementos químicos a los océanos también desempeñó un papel en ello”, dijo Kirkland. </p> <p> “El componente disuelto ‘perdido’ en estas rocas se ve ‘reaparecer’ en los cambios de la química oceánica en este momento”, añadió. Al cartografiar estos cambios en los entornos terrestres y marinos, “estamos obteniendo imágenes de la transferencia de elementos químicos a través de la Tierra como sistema”. </p> <p> Los científicos informaron que se produjeron grandes glaciaciones al menos dos veces entre hace 720 millones y 635 millones de años. A finales del Neoproterozoico, cuando la cubierta helada de la Tierra comenzó a descongelarse, se estaban produciendo importantes cambios químicos en la atmósfera y los océanos de la Tierra. </p> <p> “El final de estas glaciaciones está marcado por un rápido aumento del oxígeno atmosférico y oceánico, posiblemente debido a una mayor meteorización de las superficies rocosas expuestas y a un mayor flujo de nutrientes hacia el océano”, explicó Kirkland. Tales cambios podrían haber infundido ciclos de nutrientes y proporcionado a la vida emergente el impulso que necesitaba para evolucionar hacia formas más complejas. </p> <p> “La idea de que los restos glaciares de las eras glaciares del Neoproterozoico proporcionaron nutrientes para apoyar la evolución animal primitiva existe desde hace tiempo”, afirmó el Dr. Andrew Knoll, profesor emérito de Ciencias de la Tierra y Planetarias de la Universidad de Harvard, que no participó en la nueva investigación. Sin embargo, sigue habiendo dudas sobre si los minerales vertidos en el océano por la glaciación neoproterozoica habrían sido suficientes para provocar cambios medioambientales a largo plazo con consecuencias biológicas, dijo Knoll a CNN en un correo electrónico. </p> <p> Otras investigaciones sugirieron anteriormente que los impactos de los fenómenos de glaciación, como los descritos en el nuevo estudio, “bien podrían tener solo consecuencias transitorias: un bolo de nutrientes que eleva la producción primaria y tal vez aumenta los niveles de oxígeno, antes de volver al estado anterior del medio ambiente”, dijo Knoll. Los nuevos hallazgos son “una interesante adición a la conversación”, añadió. “Pero la conversación continúa”. </p> <h3> <strong> Lecciones para la crisis climática actual </strong> </h3> <p> Desde el Neoproterozoico hasta el presente, procesos similares configuran el cambio climático, incluido el papel desempeñado por el dióxido de carbono (CO2) y el comportamiento de los bucles de retroalimentación, cuando un proceso se alimenta de un aspecto existente del sistema climático de la Tierra y lo intensifica. </p> <p> Las pruebas climáticas antiguas también arrojan luz sobre lo que ocurre durante los puntos de inflexión climáticos, es decir, cuando se cruza un umbral que desencadena cambios a gran escala que suelen ser irreversibles. </p> <p> En la actualidad, la Tierra se está calentando rápidamente en lugar de enfriarse gradualmente a lo largo del tiempo. Hicieron falta millones de años para que la glaciación se apoderara del planeta durante la fase de bola de nieve de la Tierra, mientras que el calentamiento moderno se está acelerando en apenas unas décadas, “mucho más rápido que los cambios climáticos naturales del pasado”, afirmó Kirkland. </p> <p> Sin embargo, el avance global del cambio climático se sigue trazando estudiando la interacción de la acumulación de CO2, los bucles de retroalimentación y los puntos de inflexión, añadió. </p> <p> Observamos cómo diversas regiones del mundo se encuentran conectadas mediante relaciones químicas," expresó. "Cuando alteras un componente del sistema, el resto también experimenta cambios. </p> <p> Mindy Weisberger se desempeña como periodista científica y productora multimedia, habiendo publicado sus trabajos en plataformas como Live Science, Scientific American y la revista How It Works. </p> <p> Para obtener más noticias y boletines de CNN, crea una cuenta aquí. CNN.com </p>

El hallazgo de un antiguo glaciar revela pistas sobre cómo evolucionó la vida compleja en la Tierra, según los científicos

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Hace más de 500 millones de años, en una Tierra gélida y cubierta de hielo, los glaciares agitaron los ingredientes de la vida compleja al arrasar los minerales terrestres y depositarlos después en …

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그랜드캐년, 왜 세계적인 명소로 꼽힐까?

<p> [Blog.DIwida=이지환 기자] 그랜드 캐니언은 미국의 애리조나 주에 자리잡은 엄청난 규모의 협곡입니다. 이 장관한 풍광 때문에 전세계에서 이름 난 관광지를 이루며, 대략 4억 6천 만 년 동안 이루어진 지형 변동으로 만들어졌습니다. 이러한 뛰어난 천연 보물인 그랜드 캐니언에서는 수많은 방문객들을 매료시키는 환상적인 광경을 볼 수 있습니다. 또한 그 위용과 미려함 때문인지 많은 사람들이 꼭 가봐야 하는 관광지 중 하나로 여겨집니다. </p> <div> <img data-document-id="cms/api/amp/image/AA1yuFBX" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1yuFBX.jpg"/> </div> <p> 그랜드캐년의 주요 미덕은 그 크기와 광활함에서 비롯됩니다. 이 계곡은 약 1,600미터 깊이이며, 길이는 무려 446킬로미터입니다. 콜로라도 강이 이 곳을 가득 메워 더 많은 아름다움을 선사합니다. 특히 관광객들이 많이 찾는 사우스 림 지역에서는 멀리 보이는 넓고 드넓은 협곡의 모습을 즐길 수 있습니다. 또한 해돋이나 석양 시에는 협곡 전체가 다양한 색상을 표현하여 매우 환상적인 분위기를 연출합니다. </p> <p> 그랜드캐니언은 그 자체의 경치 못지않게 여러 가지 활동도 선사합니다. 산책, 사이클링, 헬리코pter 여행, 그리고 콜orado 강에서 카약타기는 여기서 다양한 여가활동을 즐길 수 있게 합니다. 특히 산책은 그랜드캐니언에 좀 더 가깝게 다가갈 수 있는 좋은 방법입니다. '브라이트 엔젤 트랙' 과 '켄달 버지 트래일' 은 대중적으로 가장 사랑받는 등산 코스로서, 협곡 깊숙히 들어간 길들을 걸으며 실제로 그랜드캐니언의 위용과 아름다움을 경험하게 됩니다. </p> <p> 그랜드캐니언은 단순히 자연의 아름다움을 감상하는 공간에 불과하지 않습니다. 여기에서는 고대 원주민들의 문화와 역사를 이해할 수도 있습니다. 그랜드캐니언 곳곳에서 다양한 원주민 부족들의 유적으로나 전통을 살펴볼 수 있으며, 이러한 요인들 덕분에 자연과 문화 두 가지 모두를 체험해 볼 수 있는 독특한 기회가 마련되어 있습니다. </p> <p> 그뿐만 아니라 그랜드캐니언은 여러 가지 여행 스타일을 갖춘 사람들 모두에게 좋다. 휴식과 함께 아름다운 사진을 남기기를 바라는 방문객들은 전망대에서 멋진 이미지를 포착할 수 있으며, 하이킹에 관심 있는 사람들을 위해서는 다양한 등산로가 준비되어 있다. 야외 활동을 좋아하는 분들이라면, 그랜드캐니언 내부의 캠핑장을 이용해 자연 속에서 잔뜩 꾹 눌러싼 추억을 만들 수도 있을 것이다. </p> <p> 그랜드캐니언은 그 규모와 장관으로 인해 글로벌 관광객들 사이에서 사랑 받는 명소가 되었습니다. 여기를 찾으면 실제로 자연의 위력을 체험하게 될 것이며, 결코 잊히지 않을 특별한 순간을 맞이하게 될 것입니다. </p>

그랜드캐년, 왜 세계적인 명소로 꼽힐까?

Unknown

[Blog.DIwida=이지환 기자] 그랜드 캐니언은 미국의 애리조나 주에 자리잡은 엄청난 규모의 협곡입니다. 이 장관한 풍광 때문에 전세계에서 이름 난 관광지를 이루며, 대략 4억 6천 만 년 동안 이루어진 지형 변동으로 만들어졌습니다. 이러한 뛰어난 천연 보물인 그랜드 캐니언에서는 수많은 방문객들을 매료시키는 환상적인 광경을 볼 수 있습니다. 또한 …

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Rock from 4,200,000,000 years ago confirms something we wondered about the moon

<img data-document-id="cms/api/amp/image/AA1udcb9" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1udcb9.jpg"/> <p> <strong> Volcanoes erupted on the mysterious far side of the moon billions of years ago, new research confirms. </strong> </p> <p> Scientists analysed lunar soil brought back to Earth from China ’s Chang’e-6 spacecraft, the first to return with a haul of rocks and dirt from the little-explored far side. </p> <p> Two separate teams found fragments of volcanic rock that were about 2.8 billion years old. One piece was even more ancient, dating back to 4.2 billion years. </p> <p> ‘To obtain a sample from this area is really important because it’s an area that otherwise we have no data for,’ said Christopher Hamilton, a planetary volcano expert at the University of Arizona. </p> <p> Scientists know there were active volcanoes on the near side, the part of the moon seen from Earth, dating back to a similar time frame. </p> <p> Previous studies, including data from NASA’s Lunar Reconnaissance Orbiter, suggested the far side might also have a volcanic past. </p> <img data-document-id="cms/api/amp/image/AA1ud9M4" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1ud9M4.jpg"/> <p> The first samples from that region facing away from Earth confirm an active history. The results were published Friday in the journals Nature and Science. </p> <p> China has launched several spacecraft to the moon. </p> <p> In 2020, the Chang’e-5 spacecraft returned moon rocks from the near side, the first since those collected by NASA’s Apollo astronauts and Soviet Union spacecraft in the 1970s. </p> <p> The Chang’e-4 spacecraft became the first to visit the moon’s far side in 2019. </p> <img data-document-id="cms/api/amp/image/AA1ue7gF" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1ue7gF.jpg"/> <p> The moon’s far side is pockmarked by craters and has fewer of the near side’s flat, dark plains carved by lava flows. </p> <p> Why the two halves are so different remains a mystery, said study co-author Qiu-Li Li from the Chinese Academy of Sciences. </p> <p> Li said the new findings reveal over one billion years of volcanic eruptions on the lunar far side. </p> <p> Future research will determine how the activity lasted so long. </p> <p class=""> <strong> <strong> <strong> Get in touch with our news team by emailing us at webnews@.co.uk . </strong> </strong> </strong> </p> <p class=""> <strong> For more stories like this, </strong> <strong> check our news page </strong> . </p> <p> Get your need-to-know latest news, feel-good stories, analysis and more by signing up to 's News Updates newsletter </p>

Rock from 4,200,000,000 years ago confirms something we wondered about the moon

Unknown

Volcanoes erupted on the mysterious far side of the moon billions of years ago, new research confirms. Scientists analysed lunar soil brought back to Earth from China ’s Chang’e-6 spacec…

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Mystery Solved: Hidden 'Donut' Structure Revealed Within Earth's Core

<ul class="mol-bullets-with-font"> <li class=""> <strong> Scientists found a doughnut-like area at the upper boundary of the outer core. </strong> </li> <li class=""> <strong> This less dense area aids in mixing the molten metal, thereby producing the magnetic field. </strong> </li> </ul> <p class="mol-para-with-font"> Researchers have discovered an enormous doughnut-like formation hidden deep within Earth’s interior. </p> <p class="mol-para-with-font"> Scientists from the Australian National University utilized seismic waves created by <a href="https://www.dailymail.co.uk/news/earthquakes/index.html"> earthquakes </a> to gaze into the Earth's enigmatic liquid center. </p> <p class="mol-para-with-font"> By following the trajectory of these waves across the Earth, scientists discovered a layer approximately hundreds of kilometers deep where their speed decreased by two percent compared to usual. </p> <p class="mol-para-with-font"> This doughnut-shaped formation circles the Earth’s liquid outer core along an equatorial path, potentially playing a key role in generating our planet's shielding magnetic field. </p> <p class="mol-para-with-font"> Professor Hrvoje Tkalčić, who led the research, states: "The magnetic field is an essential component required to maintain life on Earth's surface." </p> <img data-document-id="cms/api/amp/image/AA1pR5IJ" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pR5IJ.jpg"/> <img data-document-id="cms/api/amp/image/AA1pR1dQ" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pR1dQ.jpg"/> <p class="mol-para-with-font"> <a href="https://www.dailymail.co.uk/sciencetech/article-9325169/Scientists-detect-signs-hidden-innermost-core-inside-planet.html"> Our planet consists of four primary layers. </a> the exterior crust, the partially molten mantle, a fluid metallic outer core, and a solid metallic inner core. </p> <img data-document-id="cms/api/amp/slideshow/AA1pR7WL" data-reference="slideshow"/> <p class="mol-para-with-font"> When the movement of tectonic plates in the crust creates earthquakes, these produce vibrations that spread out through all the other layers of the Earth. </p> <p class="mol-para-with-font"> Leveraging the global network of seismic monitoring stations, <a href="https://www.dailymail.co.uk/sciencetech/article-13525175/Earth-days-increasing-inner-core-study.html"> Researchers can observe how the waves propagate and use this information to forecast the circumstances beneath the water's surface. </a> </p> <p class="mol-para-with-font"> Researchers typically focus on the large, strong wavefronts that circulate globally within the initial hour following an earthquake. </p> <p class="mol-para-with-font"> Nevertheless, Professor Tkalčić and his co-author Dr Xiaolong Ma managed to identify this pattern by examining the subtle remnants of waves that persisted for several hours following the original shock. </p> <p class="mol-para-with-font"> The technique demonstrated that seismic waves propagating close to the poles moved at a quicker pace compared to those nearer to the equator. </p> <img data-document-id="cms/api/amp/image/AA1pQTWA" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pQTWA.jpg"/> <p class="mol-para-with-font"> When they compared their findings with various models of the Earth’s interior, Professor Tkalčić and Dr. Ma discovered that these observations were most accurately described by the existence of an extensive subterranean ‘ring’ structure, akin to a doughnut shape. </p> <p class="mol-para-with-font"> They forecast that this area is located solely at low latitudes and aligns with the equator close to the upper boundary of the outer core, where the liquid portion interfaces with the mantle. </p> <p class="mol-para-with-font"> "We aren't sure about the precise thickness of the doughnut, but we deduced that it extends several hundred kilometers below the core-mantle boundary," states Professor Tkalčić. </p> <p class="mol-para-with-font"> Due to the area's significant importance, finding these could greatly impact our understanding of life both on Earth and elsewhere in the universe. </p> <p class="mol-para-with-font"> The Earth's outer core extends about 2,160 miles (3,480 km), which is somewhat bigger than the size of Mars. </p> <img data-document-id="cms/api/amp/image/AA1pQTWM" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pQTWM.jpg"/> <img data-document-id="cms/api/amp/image/AA1pR1eB" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pR1eB.jpg"/> <p class="mol-para-with-font"> Primarily composed of molten nickel and iron, convection currents combined with the planet’s spin cause the metallic fluid within this stratum to form elongated vertical whirls stretching from north to south, similar to immense water tornadoes. </p> <p class="mol-para-with-font"> The rotating flows within these molten metals function akin to a dynamo, generating the Earth's magnetic field. </p> <p class="mol-para-with-font"> As this donut-shaped area has risen to the upper part of the liquid outer core, it implies that it might contain an abundance of lighter elements such as silicon, sulfur, oxygen, hydrogen, or carbon. </p> <p class="mol-para-with-font"> Professor Tkalčić states: "Our discoveries are intriguing as this reduced speed within the liquid core suggests a significant presence of lightweight chemical elements in those areas, which would consequently decelerate the seismic waves." </p> <img data-document-id="cms/api/amp/image/AA1pR1eN" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pR1eN.jpg"/> <img data-document-id="cms/api/amp/image/AA1pR1eU" data-reference="image" src="https://img-s-msn-com.akamaized.net/tenant/amp/entityid/AA1pR1eU.jpg"/> <p class="mol-para-with-font"> These lightweight components, along with variations in temperature, aid in mixing the liquids within the outer core. </p> <p class="mol-para-with-font"> Without that vigorous movement to power the planet's inner dynamo, the Earth's magnetic field may not have developed. </p> <p class="mol-para-with-font"> <a href="https://www.dailymail.co.uk/sciencetech/article-3496688/Earth-s-magnetic-field-crucial-helping-life-started-Scientists-say-shielded-planet-harsh-weather-early-solar-system.html"> In the absence of the magnetic field, the planet's surface would face an unrelenting assault from charged particles. </a> From the sun, which has the power to damage the DNA of living organisms. </p> <p class="mol-para-with-font"> Hence, this toroidal area could be an essential component of the mystery explaining how life evolved on Earth and what signs we should search for when looking at potentially habitable exoplanets. </p> <p class="mol-para-with-font"> Dr. Tkalčić concludes: "Our findings might encourage further investigation into the magnetic fields of both our planet and others." </p> <a href="https://www.dailymail.co.uk/sciencetech/article-13804285/donut-structure-discovered-inside-Earth.html"> Read more </a>

Mystery Solved: Hidden 'Donut' Structure Revealed Within Earth's Core

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Scientists found a doughnut-like area at the upper boundary of the outer core. This less dense area aids in mixing the molten metal, thereby producing the magnetic field. R…

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