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The Chesapeake Bay Bolide Impact: A New View of Coastal Plain Evolution
Chesapeake Bay - Wikipedia
Bolide Impact Figure 1. Location of bolide impact and of shoreline when bolide hit. A spectacular geological event took place on the Atlantic margin of North America about 35 million years ago in the late part of the Eocene Epoch. Sea level was unusually high everywhere on Earth, and the ancient shoreline of the Virginia region was somewhere in the vicinity of where Richmond is today fig. Tropical rain forests covered the slopes of the Appalachians. To the east of a narrow coastal plain, a broad, lime calcium carbonate -covered continental shelf lay beneath the ocean.
H05329: NOS Hydrographic Survey , Chesapeake Bay, Maryland, 1933-07-18
The National Oceanic and Atmospheric Administration NOAA has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features e. NOAA is responsible for archiving and distributing the source data as described in this metadata record. This page provides an interface to search the Getty Thesaurus of Geographic Didn't find what you're looking for?
It is 2. Average depth is 21 feet 6. Known for both its beauty and bounty, the Bay has become "emptier", with fewer crabs, oysters and watermen in past years. The word Chesepiooc is an Algonquian word referring to a village 'at a big river'. It is the seventh oldest surviving English place-name in the United States, first applied as "Chesepiook" by explorers heading north from the Roanoke Colony into a Chesapeake tributary in or