Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089607 |
Crater morphometry on the mafic floor unit at Jezero crater, Mars: Comparisons to a known basaltic lava plain at the InSight landing site | |
Nicholas H. Warner; Andrew J. Schuyler; A. Deanne Rogers; Matthew P. Golombek; John Grant; Sharon Wilson; Cathy Weitz; Nathan Williams; Fred Calef | |
2020-08-21 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | A secondary objective for the Perseverance rover mission to Jezero crater, Mars is to collect igneous rocks for analysis on Earth. The mafic crater floor unit (MFU) represents the best candidate. Ten‐meter‐scale craters on the MFU exhibit rocky ejecta, rims, and slopes that indicate resistant rock. The frequency distribution of these craters is, however, low. Comparisons of MFU craters to craters on a lava plain at the InSight landing site reveal that the MFU lacks a granular regolith. Removal of regolith or exhumation of the MFU, explain the rocky crater morphology and low density. Erosion rates, calculated using crater retention timescales of ~2.0 Ga for both locations, are 10‐3 to 10‐4 m/Myr. The rates derive from craters impacted into rocky materials on the MFU versus regolith at InSight. The difference in material strength, yet comparable erosion rates, require more vigorous surface processes at Jezero relative to global averages on Mars. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/291100 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Nicholas H. Warner,Andrew J. Schuyler,A. Deanne Rogers,et al. Crater morphometry on the mafic floor unit at Jezero crater, Mars: Comparisons to a known basaltic lava plain at the InSight landing site[J]. Geophysical Research Letters,2020. |
APA | Nicholas H. Warner.,Andrew J. Schuyler.,A. Deanne Rogers.,Matthew P. Golombek.,John Grant.,...&Fred Calef.(2020).Crater morphometry on the mafic floor unit at Jezero crater, Mars: Comparisons to a known basaltic lava plain at the InSight landing site.Geophysical Research Letters. |
MLA | Nicholas H. Warner,et al."Crater morphometry on the mafic floor unit at Jezero crater, Mars: Comparisons to a known basaltic lava plain at the InSight landing site".Geophysical Research Letters (2020). |
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