Drilling the central crater of the Chesapeake Bay Impact Structure: A first look
Article first published online: 3 JUN 2011
©2004. American Geophysical Union. All Rights Reserved.
Eos, Transactions American Geophysical Union
Volume 85, Issue 39, pages 369–377, 28 September 2004
How to Cite
2004), Drilling the central crater of the Chesapeake Bay Impact Structure: A first look, Eos Trans. AGU, 85(39), 369–377, doi:10.1029/2004EO390001., , , , , , and (
- Issue published online: 3 JUN 2011
- Article first published online: 3 JUN 2011
The late Eocene Chesapeake Bay impact structure is a well-preserved example of one of Earth's largest impact craters, and its continental-shelf setting and relatively shallow burial make it an excellent target for study. Since the discovery of the structure over a decade ago [Edwards et al., 2004; Poag et al., 2004], test drilling by U.S. federal and state agencies has been limited to the structure's annular trough (Figure 1). In May 2004, the U.S. Geological Survey (USGS) drilled the first scientific test hole into the central crater of the Chesapeake Bay impact structure in Cape Charies,Virginia (Figure 1). This partially cored test hole, the deepest to date, penetrated postimpact sediments and impact breccias to a total depth of 823 m.