BP Structure | |
---|---|
Gebel Dalma | |
Impact crater/structure | |
Confidence | Confirmed |
Diameter | 2 kilometres (1.2 mi) |
Age | <120 Ma |
Exposed | Yes |
Drilled | No |
Location | |
Country | Libya |
The BP Structure, also known as Gebel Dalma, is an exposed impact crater in Libya. It is so called because it was identified by a BP (then British Petroleum) geological survey team. [1]
The crater is 2 kilometres (1.2 mi) in diameter and its age is estimated to be less than 120 million years (Lower Cretaceous or later).
Elbow is a meteorite crater just north of the village of Riverhurst in Saskatchewan, Canada.
Gardnos crater is a meteorite impact crater in Nesbyen municipality in Viken county, Norway. It is located inside Meteorite Park (Meteorittparken) at Gardnos 10 kilometres (6.2 mi) north of the town of Nesbyen.
Kalkkop is an impact crater which can be found on a private farm 50 kilometres (31 mi) south east of the town of Aberdeen, Eastern Cape, in the Eastern Cape Province of South Africa. The name is derived from two Afrikaans words, namely "kalk" meaning limestone and "kop" meaning head.
Karla Crater is a meteorite impact crater in Tatarstan, Russia.
Mistastin crater is a meteorite crater in Labrador, Canada which contains the roughly circular Mistastin Lake. The lake is approximately 16 km (9.9 mi) in diameter, while the estimated diameter of the original crater is 28 km (17 mi). The age of the crater is calculated to be 36.6 ± 2 million years (Eocene).
Mjølnir is a meteorite crater on the floor of Barents Sea off the coast of Norway. It is 40 km (25 mi) in diameter and the age is estimated to be 142.0 ± 2.6 million years. The bolide was an estimated 2 km (1.2 mi) wide.
Oasis is a meteorite crater in Libya. The crater is exposed at the surface, and has been significantly eroded. The prominent topographic ring is only the central uplift, which is about 5.2 kilometres (3.2 mi) in diameter, while the original crater rim is estimated to have been 18 kilometres (11 mi) in diameter. The age is estimated to be less than 120 million years.
Presqu'île is a meteorite crater in the territory equivalent to a regional county municipality (TE) of Jamésie in the Nord-du-Québec region of Quebec, Canada, located about 3 kilometres (2 mi) south of the city of Chapais.
Saint Martin is an impact crater in Manitoba, Canada. It is located in the northern part of the Rural Municipality of Grahamdale, northwest of Lake St. Martin.
Steen River is an impact structure in Alberta, Canada. It is 25 km (16 mi) in diameter and the age is estimated to be 91 ± 7 million years. The crater is not exposed at the surface. The crater was partially eroded prior to burial, and lies under 200 m (660 ft) of sediments.
Suvasvesi is a lake in Eastern Finland near the town of Kuopio. Suvasvesi consists of two circular open lakes, Kuukkarinselkä in north and Haapaselkä in south. The lakes are separated by a group of islands. The lake has 688 islands in total. The area of the lake is 234 square kilometres (90 sq mi) making it the 18th largest lake in Finland. Kuukkarinselkä is the third deepest lake in Finland measuring 89.0 metres (292.0 ft) in the deepest point.
Tvären is a circular bay close to Studsvik, Sweden.
Viewfield is an impact crater in Saskatchewan, Canada.
Zhamanshin is a meteorite crater in Kazakhstan. It is 14 kilometres (8.7 mi) in diameter and the age is estimated to be 900,000 ± 100,000 years (Pleistocene). The crater is exposed at the surface.
Kebira Crater is the name given to a circular topographic feature that was identified in 2007 by Farouk El-Baz and Eman Ghoneim using satellite imagery, Radarsat-1, and Shuttle Radar Topography Mission (SRTM) data in the Sahara desert. This feature straddles the border between Egypt and Libya. The name of this feature is derived from the Arabic word for "large", and also from its location near the Gilf Kebir region in southwest Egypt. Based solely on their interpretations of the remote sensing data, they argue that this feature is an exceptionally large, double-ringed, extraterrestrial impact crater. They suggest that the crater's original appearance has been obscured by wind and water erosion over time. Finally, they speculated that this feature might be the source of the yellow-green silica glass fragments, known as "Libyan desert glass", that can be found across part of Egypt's Libyan Desert. They neither conducted any fieldwork at this feature nor studied any samples collected from it. However, the Kebira Crater is currently not listed in the Earth Impact Database. Field trips to investigate the feature have found no supporting evidence. The "central uplift" clearly retains the horizontal bedding of the surrounding sandstone tableland, providing clear evidence against a possible impact origin.
The Earth Impact Database is a database of confirmed impact structures or craters on Earth. It was initiated in 1955 by the Dominion Observatory, Ottawa, under the direction of Carlyle S. Beals. Since 2001, it has been maintained as a not-for-profit source of information at the Planetary and Space Science Centre at the University of New Brunswick, Canada.
25°19′10″N24°18′34″E / 25.31944°N 24.30944°E