Articles tagged with Geologic Accretion
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New research reveals Greenland is shrinking slightly, but expanding in some regions, due to accelerated melting and prehistoric ice mass movements. The island's horizontal movements are being pulled in different directions, with areas of expansion and contraction observed.
Geologists have connected a 120-million-year-old 'super-eruption' to its source, revealing insights into Earth's complex geological history. The discovery provides a more complete history of the Pacific Ocean basin and sheds light on volcanic activity in the region.
Researchers found that Earth's first crust, formed 4.5 billion years ago, likely had chemical features similar to modern continental crust, rewriting the geological timeline. This suggests the distinctive chemical signature of continents was established at the beginning of Earth's history.
A study led by University of Alaska Fairbanks researcher Sean Regan has identified a 620-mile segment of the Denali Fault as a site where two landmasses joined and were later torn apart. The research focused on formations at three locations in Southcentral Alaska, Yukon, and near Juneau.
The Lunar Environment Monitoring System, developed by UMD researchers, will track seismic activity on the moon's surface during the upcoming Artemis III mission. The system's data will help prepare NASA for a long-term presence on other planetary bodies.
Researchers used seismic data to locate and identify a thin layer of molten silicates overlying Mars' metallic core. The discovery reveals a denser and smaller Martian core, aligning with other geophysical data and analysis of Martian meteorites. This finding provides new insights into how Mars formed, evolved, and became a barren planet.
Scientists have discovered that superdeep diamonds can provide a window into the growth and formation process of ancient supercontinents like Gondwana. By analyzing tiny inclusions within these diamonds, researchers were able to determine the age of the mantle rocks that helped buoy and grow the supercontinent from below.