Tin Bider crater

Last updated
Tin Bider crater
Tin Bider.jpg
Landsat image of the Tin Bider crater; screen capture from NASA World Wind
Impact crater/structure
Diameter6 km (3.7 mi)
Age <70 Ma
<Late Cretaceous
Location Tinrhert Plateau
Coordinates 27°36′7″N5°6′44″E / 27.60194°N 5.11222°E / 27.60194; 5.11222
Country Algeria
State Tamanrasset Province
Algeria location map.svg
Map pointer.svg
Location of the crater in Algeria

Tin Bider (Arabic : تين بيدر) is an impact crater that sits in dry, rugged terrain in Algeria. [1] [2] The crater was formed in the last 70 million years, perhaps in the late Cretaceous or early Tertiary Period. [2] Spanning 6 kilometres, the crater sits at the southern end of a range of hills. [2] The elevated position and concentric rings of Tin Bider suggest that its structure is complex.


Massive sandstones attributable to the Lower Cretaceous, known throughout the Sahara, are only exposed in the craters centre, about 500 meters above its usual stratigraphic position.

Because of the large prominence of ductile deformation, Tin Bider significantly differs from other craters. While there is yet no conclusive explanation for this unique condition, Tin Bider could provide important information toward a better understanding of large-scale impact cratering.

See also

Related Research Articles

<span class="mw-page-title-main">Impact crater</span> Circular depression in a solid astronomical body formed by the impact of a smaller object

An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Lunar impact craters range from microscopic craters on lunar rocks returned by the Apollo program and small, simple, bowl-shaped depressions in the lunar regolith to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth.

<span class="mw-page-title-main">Amguid crater</span>

Amguid is a meteorite crater in Algeria.

<span class="mw-page-title-main">Aorounga crater</span> Prehistoric impact crater

Aorounga is an eroded meteorite impact crater in Chad, Africa. The exposed remnant of the crater is 12.6 km (7.8 mi) in diameter and its age is estimated to be less than 345 million years.

<span class="mw-page-title-main">Araguainha crater</span> Impact crater in Brazil

The Araguainha crater or Araguainha dome is an impact crater on the border of Mato Grosso and Goiás states, Brazil, between the villages of Araguainha and Ponte Branca. With a diameter of 40 kilometres (25 mi), it is the largest known impact crater in South America.

<span class="mw-page-title-main">Gweni-Fada crater</span> Meteorite crater in the Ennedi Plateau, Chad, Africa

Gweni-Fada is a meteorite crater in the Ennedi Plateau, Chad, Africa.

<span class="mw-page-title-main">Kentland crater</span> Impact structure in Indiana, United States

The Kentland structure, also known as the Kentland crater or the Kentland disturbed area, is an impact structure located near the town of Kentland in Newton County, Indiana, United States.

<span class="mw-page-title-main">Mistastin crater</span> Impact crater lake in Canada

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).

The Morokweng impact structure is an impact structure buried beneath the Kalahari Desert near the town of Morokweng in South Africa's North West province, close to the border with Botswana.

<span class="mw-page-title-main">Ouarkziz crater</span>

Ouarkziz 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. The crater is exposed at the surface.

<span class="mw-page-title-main">Riachão Ring</span>

Riachão Ring is a meteorite impact crater in Brazil. It lies within the Parnaíba Basin. It is 4.5 kilometres (2.8 mi) in diameter and the age is estimated to be less than 200 million years. The crater is exposed at the surface.

<span class="mw-page-title-main">Rochechouart impact structure</span> Asteroid impact structure in France

Rochechouart impact structure or Rochechouart astrobleme is an impact structure in France. Erosion has over the millions of years has 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.

<span class="mw-page-title-main">Roter Kamm crater</span>

Roter Kamm is a meteorite crater, located in the Sperrgebiet, within the Namibian section of the Namib Desert, approximately 80 kilometres (50 mi) north of Oranjemund and 12 kilometres (7.5 mi) southwest of Aurus Mountain in the ǁKaras Region. The crater is 2.5 kilometres (1.6 mi) in diameter and is 130 metres (430 ft) deep. The age is estimated at 4.81 ± 0.5 Ma, placing it in the Pliocene. The crater is exposed at the surface, but its original floor is covered by sand deposits at least 100 metres (330 ft) thick.

<span class="mw-page-title-main">Tabun-Khara-Obo crater</span>

Tabun-Khara-Obo is an impact crater in the Dornogovi Aimag (province) the south-east of Mongolia. The crater, which is exposed at the surface, is 1.3 km (0.81 mi) in diameter. The crater's rim rises some 20 to 30 metres above the crater bottom, but the bottom of crater is covered with up to 171 metres (561 ft) thick layer of lake deposits - a testimony that this crater in earlier times was filled with a lake.

<span class="mw-page-title-main">Talemzane crater</span>

Talemzane or madena is an impact crater in Algeria, 40 km south-east of Hassi Delaa.

<span class="mw-page-title-main">Vargeão Dome</span> Impact crater in Brazil

Vargeão Dome is a meteorite crater in Santa Catarina State, Brazil, straddling the municipalities of Vargeão, Faxinal dos Guedes, and Passos Maia.

<span class="mw-page-title-main">Vredefort impact structure</span> Largest verified impact structure on Earth, about 2 billion years old

The Vredefort impact structure is the largest verified impact structure on Earth. The crater, which has since been eroded away, was around 180–300 km (100–200 mi) across when it was formed. The remaining structure, comprising the deformed underlying bedrock, is located in present-day Free State province of South Africa. It is named after the town of Vredefort, which is near its centre. The structure's central uplift is known as the Vredefort Dome. The impact structure was formed during the Paleoproterozoic Era, 2.023 billion years ago. It is the second-oldest known impact structure on Earth, after Yarrabubba.

<span class="mw-page-title-main">Manson crater</span> 74 million year old meteor crater in Iowa

The Manson crater is an impact crater near the site of Manson, Iowa where an asteroid or comet nucleus struck the Earth during the Cretaceous Period, approximately 74 Ma. It was one of the largest known impact events to have happened in North America. Previously it was thought to have led to the extinction of the dinosaurs until isotopic ages proved that it was too old.

<span class="mw-page-title-main">Serra da Cangalha</span> Impact crater in Brazil

Serra da Cangalha is an impact crater in the State of Tocantins, near the border of Maranhão State, in north/northeastern Brazil. The crater is between 12 and 13 kilometres in diameter, making it the second-largest known crater in Brazil. Its age is estimated to be about 220 million years. The name means Pack-Saddle Mountains in Portuguese.


  1. "Tin Bider". Earth Impact Database . Planetary and Space Science Centre University of New Brunswick Fredericton . Retrieved 2009-08-16.
  2. 1 2 3 "Tin Bider Crater, Algeria". NASA.

Further reading