Topics in the 26 March posting of GEOLOGY include anthropogenic impacts on the Indus River into the Arabian Sea; possible electrical conductivity beneath the Yellowstone hotspot track; mountain-forming volcanoes and deadly debris flows; melting beneath the Colorado Plateau; widespread weathered glass on Mars; and a new view into Mars' global aqueous history.

A layer of partially molten rock about 22 to 75 miles underground can't be the only mechanism that allows continents to gradually shift their position over millions of years.

A layer of partially molten rock about 22 to 75 miles underground can't be the only mechanism that allows continents to gradually shift their position over millions of years.

Scientists interested in the construction of the rock layers immediately under the Earth’s crust, the lithosphere and asthenosphere, have new tools to help analyze these layers and further understand plate tectonics.

GREENBELT, Md., March 22, 2012 /PRNewswire-USNewswire/ -- A layer of partially molten rock about 22 to 75 miles underground can't be the only mechanism that allows continents to gradually shift