Low surface gravitational acceleration of Mars results in a thick and weak lithosphere: Implications for topography, volcanism, and hydrology
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- 作者：Michael J. Heapa ; heap@unistra.fr" class="auth_mail" title="E-mail the corresponding author ; Paul K. Byrneb ; Sami Mikhailc
- 关键词：Mars ; Brittle ; Ductile ; Volcano ; Dyke ; Lithosphere ; Strength
- 刊名：Icarus
- 出版年：2017
- 出版时间：1 January 2017
- 年：2017
- 卷：281
- 期：Complete
- 页码：103-114
- 全文大小：1115 K
文摘
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The Martian lithosphere was thicker but weaker than Earth's throughout its geological history due to differences in surface gravity.
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The lower Martian surface gravity allows fractures to be open at greater depths and wider at a given depth, relative to Earth.
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Dyking—the principal mode of magma migration—is thus more efficient on Mars than Earth.
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A porous and fractured Martian lithosphere, relative to Earth, will enhance groundwater storage and circulation.
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Differences in surface gravity can influence topography, volcanism, and hydrology of a planetary body.