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The impact crater was formed approximately 360 million years ago as a shallow, saucer-shaped crater, 3.8 kilometres (2.4 mi) in diameter and about 150 metres (490 ft) deep. A large central hill, highly deformed rim strata, and a breccia lens 40 m (130 ft) in thickness were produced during formation. Over 2 square kilometres (490 acres) of flat ...
Oak Ridge National Laboratory. / 35.93; -84.31. Oak Ridge National Laboratory ( ORNL) is a federally funded research and development center in Oak Ridge, Tennessee, United States. Founded in 1943, the laboratory is now sponsored by the United States Department of Energy and administered by UT–Battelle, LLC. [ 3]
Wells Creek crater. / 36.37778°N 87.65833°W / 36.37778; -87.65833. Wells Creek is an impact crater located near Cumberland City, Tennessee. It is 12 kilometers (7.5 mi) in diameter and the age is estimated to be 200 ± 100 Ma (million years old), placing it in the Jurassic or a neighboring period. The crater is exposed to the surface.
Yes. Oblique air photo of central Serpent Mound crater. Serpent Mound crater, also known as the Serpent Mound Disturbance, [1] is an eroded meteorite impact crater in Ohio, United States. It lies largely in Adams County, with the northern part mostly in Highland County, except for a small northeast part in Pike County. [2] [3]
Map all coordinates using OpenStreetMap. This list includes all 60 confirmed impact structures in North America in the Earth Impact Database (EID). These features were caused by the collision of large meteorites or comets with the Earth. For eroded or buried craters, the stated diameter typically refers to an estimate of original rim diameter ...
This is a list of largest meteorites on Earth. Size can be assessed by the largest fragment of a given meteorite or the total amount of material coming from the same meteorite fall: often a single meteoroid during atmospheric entry tends to fragment into more pieces. The table lists the largest meteorites found on the Earth's surface.
Meteorite: A rock that partially survives the journey to the Earth's surface. Meteor shower: When we see a lot of meteors in a small amount of time, usually a matter of a few days.
Shocked quartz is a form of quartz that has a microscopic structure that is different from normal quartz. Under intense pressure (but limited temperature), the crystalline structure of quartz is deformed along planes inside the crystal. These planes, which show up as lines under a microscope, are called planar deformation features (PDFs), or ...