File:Zagros_Mountains,_Iran,_SRTM_Shaded_Relief_Anaglyph.jpg
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![File:Zagros Mountains, Iran, SRTM Shaded Relief Anaglyph.jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Zagros_Mountains%2C_Iran%2C_SRTM_Shaded_Relief_Anaglyph.jpg/800px-Zagros_Mountains%2C_Iran%2C_SRTM_Shaded_Relief_Anaglyph.jpg)
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摘要
描述Zagros Mountains, Iran, SRTM Shaded Relief Anaglyph.jpg |
English: The Zagros Mountains in Iran offer a visually stunning topographic display of geologic structure in layered sedimentary rocks. This scene is nearly 100 kilometers (62 miles) wide but is only a small part of similar terrain that covers much of southern Iran. This area is actively undergoing crustal shortening, as global tectonics moves Arabia toward Asia. Consequently, layers of sedimentary rock are folding much like a carpet will fold if pushed. The convex upward folds create structures called anticlines, which are prominently seen here. The convex downward folds (between the anticlines) create structures called synclines, which are mostly buried and hidden by sediments eroding off the anticlines. Layers having differing erosional resistance create distinctive patterns, often sawtooth triangular facets, that encircle the anticlines. Local relief between the higher mountain ridges and their intervening valleys is about 1,200 meters (about 4,000 feet). |
日期 | |
来源 | http://www.jpl.nasa.gov/spaceimages/details.php?id=PIA04955 |
作者 | NASA |
许可协议
Public domainPublic domainfalsefalse |
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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/zh、NASA版权方针页面或JPL图片使用方针。) | ![]() |
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2月 2000
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当前 | 2015年9月26日 (六) 14:06 | ![]() | 1,534 × 1,024(401 KB) | Alborzagros | User created page with UploadWizard |
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