News Revising Darwin’s Sinking-Island Theory
05-24-2013
•
arclein
The three different formations of South Pacific coral-reef islands have long fascinated geologists. Tahiti’s coral forms a “fringing” reef, a shelf growing close to the island’s shore. The “barrier” reefs of Bora Bora are separated from the main isla
•
•
News Oldest Water on Earth Found Deep Underground
05-15-2013
•
LiveScience
A pocket of water some 2.6 billion years old — the most ancient pocket of water known by far, older even than the dawn of multicellular life — has now been discovered in a mine 2 miles below the Earth's surface.
•
•
News Yellowstone Fears
05-09-2013
•
arclein
The magma chamber seen in the new study fed these smaller eruptions and is the source of the park's amazing hydrothermal springs and geysers. It also creates the surface uplift seen in the park, said Bob Smith, a seismologist at the University of Ut
•
•
News Ancient Earth Crust Stored in Deep Mantle
05-08-2013
•
arclein
oceanic volcanic rocks contain samples of recycled crust dating back to the Archean era 2.5 billion years ago. Their work is published in Nature.
•
•
News Earth's Core 1,000 Degrees Hotter Than Expected
05-04-2013
•
arclein
These experiments pegged the melting point of iron at 4,800 C (about 8,700 F) at a pressure of 2.2 million times that is found on Earth's surface at sea level.
Extrapolating from that measurement, scientists estimated the boundary between Earth'
•
•
Headlines: Earth's Core 1,000 Degrees Hotter Than Expected -- Ancient Earth Crust Stored in Deep Mantle -- Yellowstone Fears -- Oldest Water on Earth Found Deep Underground -- Revising Darwin’s Sinking-Island Theory --
News
News
News
News
News
