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Posted inSci/Tech

Impact that killed the dinosaurs triggered “mega-earthquake” that lasted weeks to months

Denver, Colo., USA, 66 million years ago, a 10-kilometer asteroid hit Earth, triggering the extinction of the dinosaurs. New evidence suggests that the Chicxulub impact also triggered an earthquake so massive that it shook the planet for weeks to months after the collision. The amount of energy released in this “mega-earthquake” is estimated at 1023 joules, […]

Posted inSci/Tech

Post-Wildfire Step-Pool Streams

April 5, 2019 – Steps and pools are among the most stable and functionally important features in the mountain river landscape. Their stability is important for dissipating stream energy, withstanding ordinary floods and resisting erosion, and regulating the flow and sediment dynamics feeding into lowland areas. Clasts comprising steps also offer habitats for sensitive and […]

Posted inRegional

Underwater surveys in Emerald Bay reveal the nature and activity of Lake Tahoe faults

Boulder, Colo., March 21, 2019 – Emerald Bay, California, a beautiful location on the southwestern shore of Lake Tahoe, is surrounded by rugged landscape, including rocky cliffs and remnants of mountain glaciers. Scenic as it may be, the area is also a complex structural puzzle. Understanding the history of fault movement in the Lake Tahoe […]

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