Ma_Alalta.jpg(638 × 480像素,文件大小:78 KB,MIME类型:image/jpeg


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描述
English: Ma Alalta volcano (center), also known as Pierre Pruvost, is an 1815-m-high stratovolcano located well to the west of the Danakil depression. A large trachytic and rhyolitic stratovolcano at the center of the Ma Alalta complex contains nested oval-shaped summit calderas, 6 km and 4 km wide in the long direction. Young basaltic lava flows were erupted on the NW, SE, and eastern flanks of the volcano, and young pantelleritic obsidian domes and lava flows were erupted on the volcano's southern flank.
日期
来源 http://www.volcano.si.edu/world/volcano.cfm?vnum=0201-111&volpage=photos&photo=111080
作者 NASA Landsat image (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology)

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Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
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当前2010年10月29日 (五) 18:402010年10月29日 (五) 18:40版本的缩略图638 × 480(78 KB)Michael Metzger{{Information |Description={{en|1=Ma Alalta volcano (center), also known as Pierre Pruvost, is an 1815-m-high stratovolcano located well to the west of the Danakil depression. A large trachytic and rhyolitic stratovolcano at the center of the Ma Alalta co

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