Hotspots are localized areas of volcanism and high heat flow within the earth's lithosphere above a mantle plume hot enough to melt portions of the overriding plate. As a plate moves over a mantle plume, volcanoes previously above the plume...

In geology, a hotspot is a location on the Earth's surface that has experienced active volcanism for a long period of time. J. Tuzo Wilson came up with the idea in 1963 that volcanic chains like the Hawaiian Islands result from the slow movement of a...

Geology of Gems By Eugenii Ya. Kievlenko. English edition edited by Art Soregaroli. Published (2003) by Ocean Pictures Ltd. Hardcover, 8.25 x 11 inches, 432 pages, $98 from minbooks@ online.ru or from Terry Huizing, 5341 Thrasher Dr., Cincinnati, OH 45247 (e-mail: tehuizing@fuse.net); ISBN 5-900395-25-1....

Chair: James Starnes, MS Department of Environmental Quality Vice-chair: George Phillips, Dept. of Wildlife, Fisheries, and Parks THURSDAY MORNING Juniper O5.01 9:00 MINING IN STREAMS: POLICY QUESTIONS FOR MISSISSIPPI Michael B. E. Bograd Mississippi Office of...

1. Alaska Referred to as "The Great Land," Alaska is home to soaring snow-capped mountains, sprawling tundra, and a remote Arctic north – all of which shelter a wide range of wildlife that is otherwise threatened or endangered in the continental United States. Humpback whales,...

Mercury levels near some coal-burning power plants are five times higher than previous government estimates, calling into question how the Environmental Protection Agency identifies biological hotspots and prompting a Maine senator to propose a national monitoring system.At least five sites in the Northeast are mercury...