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File:ASTER Richat.jpg

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Summary

Description
English: Richat Structure, Oudane, Mauritania - This prominent circular feature in the Sahara desert of Mauritania has attracted attention since the earliest space missions because it forms a conspicuous bull's-eye in the otherwise rather featureless expanse of the desert. Described by some as looking like an outsized ammonite in the desert, the structure [which has a diameter of almost 50 kilometers (30 miles)] has become a landmark for shuttle crews. Initially interpreted as a meteorite impact structure because of its high degree of circularity, it is now thought to be merely a symmetrical uplift (circular anticline) that has been laid bare by erosion. Paleozoic quartzites form the resistant beds outlining the structure. The image was acquired October 7, 2000, covers an area of 45 x 47 km, and is located at 20.9 degrees north latitude and 11.6 degrees west longitude.
Date Taken on 7 October 2000
Source https://asterweb.jpl.nasa.gov/gallery-detail.asp?name=Richat
Author NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team
Permission
(Reusing this file)		 ”The purpose of NASA's Earth Observatory is to provide a freely-accessible publication on the Internet where the public can obtain new satellite imagery and scientific information about our home planet. The focus is on Earth's climate and environmental change. In particular, we hope our site is useful to public media and educators. Any and all materials published on the Earth Observatory are freely available for re-publication or re-use, except where copyright is indicated. We ask that NASA's Earth Observatory be given credit for its original materials.”

Licensing

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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Original upload log

The original description page was here. All following user names refer to en.wikipedia.
  • 2006-04-05 12:43 Brian0918 3130×2953×8 (1928719 bytes)
  • 2006-04-05 12:34 Brian0918 3130×2953×8 (1518916 bytes) '''Credit(s):''' NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan [http://asterweb.jpl.nasa.gov/ ASTER Science Team] '''Source:''' http://asterweb.jpl.nasa.gov/gallery-detail.asp?name=Richat ''”The purpose of NASA's Earth Observatory is to provide a fr

Captions

Richat Structure, Oudane, Mauritania

Items portrayed in this file

depicts

Richat Structure

inception

7 October 2000

media type

image/jpeg

checksum

02a8c0edbe20debcfdc7b55fbfac6fa2f5d784d6

determination method or standard: SHA-1

data size

1,928,719 byte

height

2,953 pixel

width

3,130 pixel

File history

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Date/TimeThumbnailDimensionsUserComment
current05:32, 26 October 2007Thumbnail for version as of 05:32, 26 October 20073,130 × 2,953 (1.84 MB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia}} {{Information |Description='''Credit(s):''' NASA/GSFC/MITI/ERSDAC/JAROS, and U.S./Japan [http://asterweb.jpl.nasa.gov/ ASTER Science Team] '''Source:''' http://asterweb.jpl.nasa.gov/gallery-detail.asp?name=Richat ''&#8

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