Sub-ice volcanoes and ancient oceans/lakes: A Martian challenge
Global and Planetary Change
By: M. G. Chapman
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Abstract
New instruments on board the Mars Global Surveyor (MGS) spacecraft began providing accurate, high-resolution image and topography data from the planet in 1997. Though data from the Mars Orbiter Laser Altimeter (MOLA) are consistent with hypotheses that suggest large standing bodies of water/ice in the northern lowlands in the planet's past history, Mars Orbiter Camera (MOC) images acquired to test these hypotheses have provided negative or ambiguous results. In the absence of classic coastal features to test the paleo-ocean hypothesis, other indicators need to be examined. Tuyas and hyaloclastic ridges are subice volcanoes of unique appearance that form in ponded water conditions on Earth. Features with similar characteristics occur on Mars. MOLA analyses of these Martian features provide estimates of the height of putative ice/water columns at the edge of the Utopia Planitia basin and within Ophir Chasma of Valles Marineris, and support the hypotheses of a northern ocean on Mars. ?? 2003 Elsevier Science B.V. All rights reserved.
Suggested Citation
Chapman, M.G., 2003, Sub-ice volcanoes and ancient oceans/lakes: A Martian challenge: Global and Planetary Change, v. 35, no. 3-4, p. 185-198, https://doi.org/10.1016/S0921-8181(02)00126-1.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Sub-ice volcanoes and ancient oceans/lakes: A Martian challenge |
| Series title | Global and Planetary Change |
| DOI | 10.1016/S0921-8181(02)00126-1 |
| Volume | 35 |
| Issue | 3-4 |
| Year Published | 2003 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Global and Planetary Change |
| First page | 185 |
| Last page | 198 |