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Record-Breaking Slide Would Bury Central Park 66 Feet Deep

Last year’s gigantic landslide at a Utah copper mine probably was the biggest nonvolcanic slide in North America’s modern history, and included two rock avalanches that happened 90 minutes apart and surprisingly triggered 16 small earthquakes, University of Utah scientists discovered.

The landslide – which moved at an average of almost 70 mph and reached estimated speeds of at least 100 mph – left a deposit so large it “would cover New York’s Central Park with about 20 meters (66 feet) of debris,” the researchers report in the January 2014 cover study in the Geological Society of America magazine GSA Today. (more…)

Climate and Drought Lessons from Ancient Egypt

By Guest PostAugust 16, 2012Culture, Environment, Scienceachilles heel, ancient egypt, babylonian, benjamin horton, charcoal, christopher bernhardt, climate, climate change, drought, egypt, egyptian history, evolution of societies, geological record, giza, great pyramid, human history, jean daniel stanley, marcia mcnutt, microscopic charcoal, middle east, modern iraq, nile basin vegetation, nile delta, nile delta sediment, old kingdom, pollen, pyramid building time, spinx, syrian kingdom, ugarit kingdom, university of pennsylvania, uruk kingdom

Using Fossil Pollen to Augment Historical Records

Ancient pollen and charcoal preserved in deeply buried sediments in Egypt’s Nile Delta document the region’s ancient droughts and fires, including a huge drought 4,200 years ago associated with the demise of Egypt’s Old Kingdom, the era known as the pyramid-building time.

“Humans have a long history of having to deal with climate change,” said Christopher Bernhardt, a researcher with the U.S. Geological Survey. “Along with other research, this study geologically reveals that the evolution of societies is sometimes tied to climate variability at all scales – whether decadal or millennial.” (more…)

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Mine Landslide Triggered Quakes

Climate and Drought Lessons from Ancient Egypt