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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.
Module:Location map/data/USA Chesapeake Bay is a location map definition used to overlay markers and labels on an equirectangular projection map of Chesapeake Bay. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
In July, the Bay received a C+ grade, its best in 20 years, in the University of Maryland Center for Environmental Science’s 2023/2024 Chesapeake Bay Watershed Report Card.
World map in equirectangular projection of the impact structures on the Earth Impact Database as of November 2017 (in the SVG file, hover over a structure to show its details) The Earth Impact Database is a database of confirmed impact structures or craters on Earth .
The EID lists fewer than ten such craters, and the largest in the last 100,000 years (100 ka) is the 4.5 km (2.8 mi) Rio Cuarto crater in Argentina. [2] However, there is some uncertainty regarding its origins [3] and age, with some sources giving it as < 10 ka [2] [4] while the EID gives a broader < 100 ka. [3]
This year, the Chesapeake Bay got its highest grade in 22 years, and the portion of the bay that the Susquehanna River flows into got the second-best grade of the entire watershed.
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.