The buildings of our Nation's Capital are constructed with rocks from quarries located throughout the United States and many distant lands. The earliest Government buildings, however, were constructed with stones from nearby sources because it was too difficult and expensive to move heavy materials such as stone any great distance without the aid of modern transportation methods, including large cargo ships, trains, and trucks. This fact sheet describes the source and appearance of three frequently used local stones employed in building Washington, D.C., and the geologic environment in which they were formed.
The American Geological Institute (AGI) Government Affairs and Workforce Programs have organized a briefing for The Commission on Professionals in Science and Technology (CPST) on Capitol Hill discussing the topic Meeting the Global Innovation Challenge on Thursday, November 5, 2009 from 4-7 pm in the Rayburn Office Building, Room 2325.
Earth Science Week 2006 will begin with the first International EarthCache Day from 1 to 2 p.m. Sunday, Oct. 8, 2006, on the National Mall in Washington, D.C. The public is invited to join the EarthCache team from the Geological Society of America, in association with Groundspeak Inc., the American Geological Institute, and the National Park Service, in celebrating the exciting educational geocaching tool of EarthCaching at this event on the grounds northwest of the Washington Monument.