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The Chesapeake Bay impact crater is a buried impact crater, located beneath the mouth of Chesapeake Bay, United States. It was formed by a bolide that struck the eastern shore of North America about 35.5 ± 0.3 million years ago, in the late Eocene epoch. It is one of the best-preserved "wet-target" impact craters in the world. [3]
The Chesapeake Bay (/ ˈ tʃ ɛ s ə p iː k / CHESS-ə-peek) is the largest estuary in the United States. The bay is located in the Mid-Atlantic region and is primarily separated from the Atlantic Ocean by the Delmarva Peninsula, including parts of the Eastern Shore of Maryland, the Eastern Shore of Virginia, and the state of Delaware.
Established to promote informed management of the nation's estuaries and coastal habitats. Located in the southern subregion of the Chesapeake Bay, the nation's largest estuary, CBNERR-VA is a steward of four reserves that protect a diversity of estuarine habitat: Sweet Hall Marsh, Taskinas Creek, Catlett Islands and the Goodwin Islands.
Map of the Chesapeake Bay watershed. The Chesapeake Bay Program is the regional partnership that directs and conducts the restoration of the Chesapeake Bay in the United States. As a partnership, the Chesapeake Bay Program brings together members of various state, federal, academic and local watershed organizations to build and adopt policies ...
Jug Bay and Otter Point Creek were designated in 1990. The purpose of the 6,249 acres (25.29 km 2 ) Maryland Reserve, managed by the Maryland Department of Natural Resources, is to manage protected estuarine areas as natural field laboratories and to develop and implement a coordinated program of research, monitoring, education and volunteer ...
The watershed of the entire Chesapeake Bay covers 165,760 km 2 (approximately 64,000 mi 2 or 41 million acres [3] [4]). With an estuary water body area of only 11,600 km 2 (4,479 mi 2), [5] the land-to-water ratio is about 14:1. [6] Therefore, the rivers flowing into the Chesapeake Bay have a large influence on water quality in the estuary.
The bay was formed following a meteoroid impact crater during the Eocene. [6] Many of Virginia's rivers flow into the Chesapeake Bay, including the Potomac, Rappahannock, James, and York, which create three peninsulas in the bay. [7] [8]
David S. Powars is a Research Geologist with the United States Geological Survey at the Geology and Paleoclimate Science Center, in Reston, Virginia. [2]He is credited as a principal discoverer of the Chesapeake Bay impact crater.