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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 following craters are officially considered "unconfirmed" because they are not listed in the Earth Impact Database. Due to stringent requirements regarding evidence and peer-reviewed publication, newly discovered craters or those with difficulty collecting evidence generally are known for some time before becoming listed.
The Decorah crater, also called the Decorah impact structure, is a possible impact crater located on the east side of the city of Decorah in Iowa, United States. It is thought to have been caused by a meteor about 200 metres (660 ft) wide which struck during the Middle Ordovician Period, circa 470 million years ago.
Upheaval Dome is an enigmatic geological structure in San Juan County, Utah, United States, that has been variously interpreted as a meteorite impact structure or a salt dome. The structure lies 22 miles (35 km) southwest of the city of Moab, Utah , in the Island in the Sky section of Canyonlands National Park .
The Middlesboro crater (or astrobleme) is a meteorite crater in Kentucky, United States. [2] It is named after the city of Middlesboro, Kentucky, which today occupies much of the crater. The crater is approximately 3 miles (about 5 km) wide and its age is estimated to be less than 300 million years . The impactor is estimated to have been about ...
The 7.46 carat diamond discovered by Julien Navas, of Paris, France, upon his visit to the Crater of Diamonds State Park in Arkansas on January 11, 2024. - Courtesy Arkansas State Parks
Kevin Kinard of Maumelle found the second-largest diamond in the 48-year history of Crater of Diamonds State Park on Labor Day, according to a news release from Arkansas State Parks.
The Wetumpka impact crater is the only confirmed impact crater in Alabama, United States.It is located east of downtown Wetumpka in Elmore County.The crater is 4.7 miles (7.6 km) in diameter, and its age is estimated to be about 85 million years (late Cretaceous), [1] based on fossils found in the youngest disturbed deposits, which belong to the Mooreville Chalk Formation.