Bukti baru tunjukkan adanya retakan tektonik yang muncul di Zambia

Gas dari mata air panas di Zambia tengah menunjukkan tanda-tanda fluida mantel yang naik ke permukaan, mengindikasikan retakan benua tahap awal. Para peneliti mengatakan ini bisa menandai dimulainya batas lempeng tektonik baru. Temuan ini berasal dari sampel yang dikumpulkan di Kafue Rift.

Kafue Rift merupakan bagian dari zona sepanjang 2500 kilometer yang membentang dari Tanzania hingga Namibia. Para ahli geologi telah lama mencatat rendahnya gravitasi, tingginya panas di bawah permukaan, dan gempa bumi kecil di wilayah tersebut, namun hingga saat ini belum memiliki bukti langsung mengenai aktivitas di kedalaman. Analisis isotop helium dan karbon dari lima mata air panas dan tiga sumur menunjukkan karakteristik yang sesuai dengan jejak dari kedalaman hingga 190 kilometer di bawah kerak bumi.

Artikel Terkait

Scientists have revealed that a hidden mantle plume contributed to the formation of the King's Trough Complex, a vast underwater canyon system in the North Atlantic larger than the Grand Canyon. Located about 1,000 kilometers off Portugal's coast, this 500-kilometer structure resulted from tectonic rifting between Europe and Africa millions of years ago. The findings, based on rock samples and seafloor mapping, highlight how deep Earth processes influence ocean floor features.

Dilaporkan oleh AI

Harvard geoscientists have found the oldest direct evidence of plate tectonics on Earth, dating back 3.5 billion years. Analysis of ancient rocks from western Australia reveals early crustal drift and rotation. The discovery, published in Science, challenges notions of a rigid early planetary surface.

Researchers at Curtin University have developed a technique using krypton gas in microscopic zircon crystals to track the history of Earth's landscapes over millions of years. The method, which relies on cosmic rays striking surface minerals, reveals how erosion and sediment movement have shaped terrains in response to climate and tectonic changes. This approach could also aid in locating mineral deposits in Australia.

Dilaporkan oleh AI

Researchers have found that the magma reservoir beneath Japan's Kikai caldera, site of the Holocene's largest eruption 7,300 years ago, is refilling with newly injected magma. Using underwater seismic imaging, a team led by Kobe University's Nobukazu Seama mapped the reservoir and linked it to the ancient event. The discovery offers insights into how such systems rebuild after massive eruptions.

 

 

 

Situs web ini menggunakan cookie

Kami menggunakan cookie untuk analisis guna meningkatkan situs kami. Baca kebijakan privasi kami untuk informasi lebih lanjut.
Tolak