کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4680467 | 1634923 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The Martian meteorite paradox: Climatic influence on impact ejection from Mars?
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
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چکیده انگلیسی
The large number of Martian meteorites with “young” crystallization ages (especially shergottites formed ∼ 170 Myr ago on Mars) represents a paradox, because it suggests that either the mean surface age of Mars is rather young or that specific source regions are preferentially amenable for impact sampling. We present a climate controlled scenario, in which surface regions of limited extent have been especially favored for impact ejection of Martian meteorites during the past ∼ 5 Myr. This conclusion implies that the ejection ages of the shergottites may be used to constrain the end of the last major glaciations on Mars.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Earth and Planetary Science Letters - Volume 256, Issues 1–2, 15 April 2007, Pages 55–60
Journal: Earth and Planetary Science Letters - Volume 256, Issues 1–2, 15 April 2007, Pages 55–60
نویسندگان
Jörg Fritz, Ansgar Greshake, Dieter Stöffler,