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Rochechouart impact structure or Rochechouart astrobleme is an impact structure in France. Erosion has over the millions of years mostly destroyed its impact crater , the initial surface expression of the asteroid impact leaving highly deformed bedrock and fragments of the crater's floor as evidence of it.
Rochechouart is situated in the Rochechouart impact structure, an impact crater caused by an asteroid that crashed into the Earth's surface about 205 million years ago, [9] [10] in the Rhaetian period, shortly before the Triassic Jurassic boundary characterized by a massive extinction event in which 80% of the world's species were obliterated. [11]
At the west end of the department is the Rochechouart impact structure, an impact crater caused by a meteorite that crashed into the Earth's surface over 200 million years ago; because of subsequent erosion, little sign of the crater is in evidence today apart from the geologic effects on the surrounding rock. [5]
Françoise-Athenaïs de Rochechouart, also known as Madame de Montespan, was the favourite of Louis XIV. During the Reign of Terror, viscountess Marie-Victoire de Rochechouart was arrested and imprisoned in Paris, where she was guillotined in 1794. General-Count Louis-Victor-Léon de Rochechouart fought during Napoleonic wars. He took part in ...
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.
The arrondissement of Rochechouart is an arrondissement of France in the Haute-Vienne department in the Nouvelle-Aquitaine region. It has 30 communes . [ 2 ] Its population is 37,689 (2021), and its area is 795.4 km 2 (307.1 sq mi).
Mistastin crater was created 36 million years ago by a violent asteroid impact. [9] The presence of cubic zirconia around the crater rim suggests that the impact generated temperatures in excess of 2,370 °C (4,300 °F) — roughly 43% that of the surface of the Sun and the highest crustal temperatures known on Earth [9] — and produced global changes that lasted for decades after the impact.
Ouarkziz (Arabic: أوركزيز) is a meteorite impact crater in Algeria. It is 3.5 kilometers in diameter and the age is estimated to be less than 70 million years (Cretaceous or younger). The crater is exposed at the surface. [1] The Ouarkziz Impact Crater is located in northwestern Algeria, close to the border with Morocco.