New Perspectives on Ancient Mars

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 win...

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Bibliographic Details
Published inScience (American Association for the Advancement of Science) Vol. 307; no. 5713; pp. 1214 - 1220
Main Authors Solomon, Sean C, Aharonson, Oded, Aurnou, Jonathan M, Banerdt, W. Bruce, Carr, Michael H, Dombard, Andrew J, Frey, Herbert V, Golombek, Matthew P, Hauck, Steven A, Head, James W, Jakosky, Bruce M, Johnson, Catherine L, McGovern, Patrick J, Neumann, Gregory A, Phillips, Roger J, Smith, David E, Zuber, Maria T
Format Journal Article
LanguageEnglish
Published Washington, DC American Association for the Advancement of Science 25.02.2005
The American Association for the Advancement of Science
Subjects
Analysis
Astronomy
Atmosphere
Climate
Earth
Earth, ocean, space
Exact sciences and technology
Extraterrestrial Environment
Geology
Highlands
History
Individualized Instruction
Interiors
Kinetics
Lithospheres
Magma
Magnetic anomalies
Magnetic fields
Magnetics
Magnetization
Mantle
Mars
Mars (Planet)
Observations
Planetary, asteroid, and satellite characteristics and properties
Planets, their satellites and rings. Asteroids
Review
Rotating generators
Scientific Concepts
SNC meteorites
Solar system
Star & galaxy formation
Temperature
Terrestrial planets
Topography
Water
United States
Planetary atmospheres
Planetary interiors
Planetary surfaces
Mars planet
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Summary: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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ISSN:0036-8075
1095-9203
DOI:10.1126/science.1101812