Tenoumer crater: Difference between revisions
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The crater is located in the western [[Sahara Desert]]. It is {{cvt|1.9|km||}} in diameter and the age is estimated to be 21,400 ± 9,700 years old, placing it in the [[Pleistocene]] [[Epoch (geology)|epoch]].<ref>{{cite web |url=http://www.lpi.usra.edu/meetings/lpsc2009/pdf/1281.pdf |publisher=Lunar and Planetary Institute |title=40th Lunar and Planetary Science Conference |year=2009 |chapter=Petrographic Investigation of Ejecta from the Tenoumer Impact Crater, Mauritania |last1=Jaret |first1=S. J. |last2=Kah |first2=L. C. |last3=French |first3=B. M. }}</ref><ref>{{cite journal |url=http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1183.pdf |publisher=Lunar and Planetary Institute |title=The Age of Tenoumer Crater, Mauritania, Revisited |year=2003 |volume=XXXIV |last1=Storzer |first1=D. |last2=Selo |first2=M. |last3=Latouche |first3=L. |last4=Fabre |first4=J. }}</ref> |
The crater is located in the western [[Sahara Desert]]. It is {{cvt|1.9|km||}} in diameter and the age is estimated to be 21,400 ± 9,700 years old, placing it in the [[Pleistocene]] [[Epoch (geology)|epoch]].<ref>{{cite web |url=http://www.lpi.usra.edu/meetings/lpsc2009/pdf/1281.pdf |publisher=Lunar and Planetary Institute |title=40th Lunar and Planetary Science Conference |year=2009 |chapter=Petrographic Investigation of Ejecta from the Tenoumer Impact Crater, Mauritania |last1=Jaret |first1=S. J. |last2=Kah |first2=L. C. |last3=French |first3=B. M. }}</ref><ref>{{cite journal |url=http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1183.pdf |publisher=Lunar and Planetary Institute |title=The Age of Tenoumer Crater, Mauritania, Revisited |year=2003 |volume=XXXIV |last1=Storzer |first1=D. |last2=Selo |first2=M. |last3=Latouche |first3=L. |last4=Fabre |first4=J. }}</ref> |
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The crater is exposed at the surface and is nearly circular. Edges of the crater rise up to {{cvt|110|m||}} high above the base of the crater, but the bottom of the crater is covered with approximately {{cvt|200|to|300|m}} thick layer of sediments. |
The crater is exposed at the surface and is nearly circular. Edges of the crater rise up to {{cvt|110|m||}} high above the base of the crater, but the bottom of the crater is covered with approximately {{cvt|200|to|300|m}} thick layer of sediments.{{citation needed}} |
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Tenoumer crater has formed in [[gneiss]] and [[granite]] of [[Precambrian]] [[peneplain]] with a thin layer of [[Pliocene]] sediments (no older). The crater is believed{{by whom}} to be caused by an impact event due to basement rocks found outside the crater{{example needed}}{{citation needed}}. A volcanic origin [http://www.wondermondo.com/Countries/Af/Mauritania/TirisZemmour/Tenoumer.htm was once theorized] because of the discovery of [[basalt]] and [[rhyodacite]] outside of the crater basin, but current evidence{{example needed}} clearly indicates an impact origin.{{citation needed}} |
Tenoumer crater has formed in [[gneiss]] and [[granite]] of [[Precambrian]] [[peneplain]] with a thin layer of [[Pliocene]] sediments (no older). The crater is believed{{by whom}} to be caused by an impact event due to basement rocks found outside the crater{{example needed}}{{citation needed}}. A volcanic origin [http://www.wondermondo.com/Countries/Af/Mauritania/TirisZemmour/Tenoumer.htm was once theorized] because of the discovery of [[basalt]] and [[rhyodacite]] outside of the crater basin, but current evidence{{example needed}} clearly indicates an impact origin.{{citation needed}} |
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Revision as of 11:59, 16 August 2019
| Tenoumer crater | |
|---|---|
  Tenoumer crater Asteroid impact location in Africa | |
| Impact crater/structure | |
| Confidence | Confirmed |
| Diameter | 1.9 km (1.2 mi) |
| Depth |
|
| Age | 21,400 ± 9,700 |
| Location | |
| Coordinates | 22°55′5″N 10°24′27″W / 22.91806°N 10.40750°W |
| Country | Mauritania |
Tenoumer is considered to be an impact crater in Mauritania.[1]
Details
The crater is located in the western Sahara Desert. It is 1.9 km (1.2 mi) in diameter and the age is estimated to be 21,400 ± 9,700 years old, placing it in the Pleistocene epoch.[2][3]
The crater is exposed at the surface and is nearly circular. Edges of the crater rise up to 110 m (360 ft) high above the base of the crater, but the bottom of the crater is covered with approximately 200 to 300 m (660 to 980 ft) thick layer of sediments.[citation needed]
Tenoumer crater has formed in gneiss and granite of Precambrian peneplain with a thin layer of Pliocene sediments (no older). The crater is believed[by whom?] to be caused by an impact event due to basement rocks found outside the crater[example needed][citation needed]. A volcanic origin was once theorized because of the discovery of basalt and rhyodacite outside of the crater basin, but current evidence[example needed] clearly indicates an impact origin.[citation needed]
References
- ^ "Tenoumer". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2009-08-16.
- ^ Jaret, S. J.; Kah, L. C.; French, B. M. (2009). "40th Lunar and Planetary Science Conference" (PDF). Lunar and Planetary Institute.
{{cite web}}:|chapter=ignored (help) - ^ Storzer, D.; Selo, M.; Latouche, L.; Fabre, J. (2003). "The Age of Tenoumer Crater, Mauritania, Revisited" (PDF). XXXIV. Lunar and Planetary Institute.
{{cite journal}}: Cite journal requires|journal=(help)
- Brügge, Norbert. "The "impact" craters of Mauritania: Aouelloul, Tenoumer, Temimichat and El Mrayer". Archived from the original on 2010-02-23.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help)
External links
- Nasa - Image of the Day February 17, 2008
- Meteorite impact structures
- Additional Images of Tenoumer crater
