Cloud Creek crater is an impact crater in Wyoming, United States.[1] The crater is located in Natrona County, about 48 miles (77 km) northwest of Casper, near the center of a geological feature known as the Casper Arch.[2]: 445
The Cloud Creek structure is circular with a current diameter of about 7 kilometres (4.3 mi), and it is buried beneath about 1,200 metres (3,900 ft) of Mesozoic rocks.[2]: 445 The age of the structure is estimated to be 190 ± 20 million years, which means that it formed as the result of an impact during the early part of the Jurassic Period.[2]: 445 This impact feature is not exposed at the surface, but it is known only through wells drilled for oil and gas. First reported by Donald Stone,[3] Cloud Creek is a circular structure documented using several 2D reflection seismic lines of fair to good quality, gravity, magnetic and borehole data.[2] The structure has a central core of brecciated, fractured and faulted rocks uplifted up to 520 m relative to the normal stratigraphy outside the structure. The core is surrounded by an annular trough and a detached fault-bounded rim anticline. The rim anticline defines the 7 km diameter of the structure. The structure was compressed and upthrown during the Laramide compression. Morphometric parameters of the structure are consistent with known impact structures. The core is associated with a positive gravity anomaly. Magnetic data could not be interpreted.[2]
^"Cloud Creek on Earth Impact Database". Archived from the original on 2012-06-05. Retrieved 2011-10-02.
^ abcdeStone, Donald S. and Ann M. Therriault (2003). "Cloud Creek structure, central Wyoming, USA: Impact origin confirmed". Meteoritics & Planetary Science. 38 (3): 445–455. Bibcode:2003M&PS...38..445S. doi:10.1111/j.1945-5100.2003.tb00279.x.
^Cite error: The named reference Stone99 was invoked but never defined (see the help page).
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