File:PIA05482 modest.jpg
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PIA05482_modest.jpg (447 × 333 像素,檔案大小:21 KB,MIME 類型:image/jpeg)
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[編輯]描述PIA05482 modest.jpg |
English: This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature known as ripple cross-stratification. At the base of the rock, layers can be seen dipping downward to the right. The bedding that contains these dipping layers is only one to two centimeters (0.4 to 0.8 inches) thick. In the upper right corner of the rock, layers also dip to the right, but exhibit a weak "concave-up" geometry. These two features -- the thin, cross-stratified bedding combined with the possible concave geometry -- suggest small ripples with sinuous crest lines. Although wind can produce ripples, they rarely have sinuous crest lines and never form steep, dipping layers at this small scale. The most probable explanation for these ripples is that they were formed in the presence of moving water. |
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來源 | http://photojournal.jpl.nasa.gov/catalog/pia05482 |
作者 | NASA/JPL/Cornell |
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[編輯]Public domainPublic domainfalsefalse |
本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ||
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原始上傳日誌
[編輯]The original description page was here. All following user names refer to en.wikipedia.
- 2004-03-02 23:37 Perl 447×333× (21804 bytes) This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed "Last Chance," which lies within the outcrop near the rover's landing site at Meridiani Planum, Mars. The image provides evidence for a geologic feature
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目前 | 2009年5月28日 (四) 22:50 | 447 × 333(21 KB) | File Upload Bot (Magnus Manske)(留言 | 貢獻) | {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|This image taken by the Mars Exploration Rover Opportunity's panoramic camera shows the rock nicknamed |
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- ca.wikipedia.org 的使用狀況
- en.wikipedia.org 的使用狀況
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