A sill is a formation of igneous rock found in features such as mesas, hogbacks, and cuestas. Although sills can become exposed, sills are formed underground and are thus composed of plutonic igneous rocks. Sills are an intrusive rock formation....

In geology, a sill is a tabular pluton that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock. The term sill is synonymous with concordant intrusive sheet....

BROOKLYN, NY, MAY 25, 1929 - NEW YORK, NY, JULY 2, 2007 It seems a short time ago that an opera star could be considered appropriate cover material for a national news-magazine. In fact, it was more than thirty years ago that Beverly...

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....

Beverly Sills, the opera diva who won over fans worldwide with her sparkling voice and charming personality and became a powerhouse in the New York arts world, is gravely ill with cancer, The Associated Press has learned.Sills, 78, was chairwoman of the Metropolitan Opera until...

Beverly Sills, the opera diva who won over fans worldwide with her sparkling voice and charming personality and later became a powerhouse in the New York arts world, is gravely ill with cancer, The Associated Press has learned.Sills, 78, was chairwoman of the Metropolitan Opera...