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File:Ascraeus Caldera Wall PIA05977.jpg

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English: Ascraeus Mons is the northernmost of three volcanos near the equator of the planet Mars. This Mars Global Surveyor Mars Orbiter Camera image shows the wall on one of the calderae at the summit of the large volcano, Ascraeus Mons. A caldera is a large depression formed by collapse after magma in a volcano is erupted from or withdrawn to a greater depth. After collapse, the wall of this caldera was further modified by downslope movement of debris and it was pelted by small meteors to form a scattering of small craters. This image is located near 11.6°N, 104.6°W, and covers an area about 3 km (1.9 mi) across. The picture is illuminated by sunlight from the lower left.
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NASA/JPL/Malin Space Science Systems

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作者 JPL/NASA
本图像或视频收录于美国国家航空航天局 (NASA)喷气推进实验室(Jet Propulsion Laboratory),其照片编号是: PIA05977

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The original description page was here. All following user names refer to en.wikipedia.
  • 2006-07-15 00:16 Cuppysfriend 816×1224×8 (165030 bytes) Original Caption Released with Image: 20 May 2004 This [[Mars Global Surveyor]] (MGS) Mars Orbiter Camera (MOC) image shows the wall on one of the calderae at the summit of the large volcano, [[Ascraeus Mons]]. A caldera is a large depression formed by c

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当前2008年2月10日 (日) 19:532008年2月10日 (日) 19:53版本的缩略图816 × 1,224(161 KB)Finavon{{Information |Description={{en|Ascraeus Mons is the northernmost of three volcanos near the equator of the planet Mars. This Mars Global Surveyor Mars Orbiter Camera image shows the wall on one of

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