Morphology and Composition of the Surface of Mars: Mars Odyssey THEMIS Results
| Autor: | Kenneth H. Nealson, Philip R. Christensen, Jeffery E. Moersch, Michael B. Wyatt, Timothy H. McConnochie, Anton B. Ivanov, James F. Bell, Bruce M. Jakosky, Alfred S. McEwen, Michael D. Smith, Noel Gorelick, Melissa D. Lane, Hugh H. Kieffer, James W. Rice, Joshua L. Bandfield, Michael C. Malin, Victoria E. Hamilton, Timothy N. Titus, Steven W. Ruff, Harry Y. McSween, G. L. Mehall, Mark I. Richardson |
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| Rok vydání: | 2003 |
| Předmět: |
Basalt
Geologic Sediments Geological Phenomena geography Multidisciplinary geography.geographical_feature_category Extraterrestrial Environment Water on Mars Bedrock Temperature Mars Water Geology Mars Exploration Program Carbon Dioxide Astrobiology Impact crater Martian surface Thermal Emission Imaging System Seasons Ejecta |
| Zdroj: | Science. 300:2056-2061 |
| ISSN: | 1095-9203 0036-8075 |
| DOI: | 10.1126/science.1080885 |
| Popis: | The Thermal Emission Imaging System (THEMIS) on Mars Odyssey has produced infrared to visible wavelength images of the martian surface that show lithologically distinct layers with variable thickness, implying temporal changes in the processes or environments during or after their formation. Kilometer-scale exposures of bedrockare observed; elsewhere airfall dust completely mantles the surface over thousands of square kilometers. Mars has compositional variations at 100-meter scales, for example, an exposure of olivine-rich basalt in the walls of Ganges Chasma. Thermally distinct ejecta facies occur around some craters with variations associated with crater age. Polar observations have identified temporal patches of water frost in the north polar cap. No thermal signatures associated with endogenic heat sources have been identified. |
| Databáze: | OpenAIRE |
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