Review
doi: 10.1126/science.1101812.New perspectives on ancient Mars
Sean C Solomon 1, Oded Aharonson, Jonathan M Aurnou, W Bruce Banerdt, Michael H Carr, Andrew J Dombard, Herbert V Frey, Matthew P Golombek, Steven A Hauck 2nd, James W Head 3rd, Bruce M Jakosky, Catherine L Johnson, Patrick J McGovern, Gregory A Neumann, Roger J Phillips, David E Smith, Maria T Zuber
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- PMID:15731435
- DOI: 10.1126/science.1101812
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Review
New perspectives on ancient Mars
Sean C Solomon et al. Science..
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Abstract
Mars was most active during its first billion years. The core, mantle, and crust formed within approximately 50 million years of solar system formation. A magnetic dynamo in a convecting fluid core magnetized the crust, and the global field shielded a more massive early atmosphere against solar wind stripping. The Tharsis province became a focus for volcanism, deformation, and outgassing of water and carbon dioxide in quantities possibly sufficient to induce episodes of climate warming. Surficial and near-surface water contributed to regionally extensive erosion, sediment transport, and chemical alteration. Deep hydrothermal circulation accelerated crustal cooling, preserved variations in crustal thickness, and modified patterns of crustal magnetization.
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