New evidence for an ancient northern ocean on Mars has been uncovered in a recently released set of topography maps. These maps offer the strongest case yet that the planet once experienced sea-level rise consistent with an extended warm and wet climate, which was far different than the harsh, froze
Stitched together from 28 images, this view from NASA’s Curiosity Mars rover was captured after the rover ascended the steep slope of a geologic feature called “Greenheugh Pediment.” In the distance at the top of the image is the floor of Gale Crater, which is near a region called Aeolis Dorsa that researchers believe was once a massive ocean. Credit: NASA/JPL-Caltech/MSSShas been uncovered in a recently released set of topography maps.
A recently released set of topography maps provide new evidence for an ancient northern ocean on Mars. Benjamin Cardenas, assistant professor of geosciences at Penn State says the maps offer the strongest case yet that the planet once experienced sea-level rise consistent with an extended warm and wet climate, not the harsh, frozen landscape that exists today. Credit: Penn State
Elements of rock formations, such as ridge-system thicknesses, elevations, locations, and possible sedimentary flow directions helped the team understand the evolution of the region’s paleogeography. Now known as Aeolis Dorsa, the area that was once ocean contains the densest collection of fluvial ridges on the planet, Cardenas explained.
On Earth, the ancient sedimentary basins contain the stratigraphic records of evolving climate and life, explained Cardenas. If researchers want to locate a record of life on Mars, an ocean as big as the one that once covered Aeolis Dorsa would be the most logical place to start.
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