Ancient Ocean that covered 1/3 of Mars with Water, A new study conducted by University of Colorado at Boulder scientists. |
Ancient Ocean that covered 1/3 of Mars with Water, A new study conducted by University of Colorado at Boulder scientists. |
Guest_Bobby_* |
Jun 15 2010, 12:33 AM
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Guests |
I found this article about Mars being covered with Water and found it interesting.
June 13, 2010 Here is the article: http://www.colorado.edu/news/r/f9b2e812247...b0735f7098.html |
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Jun 16 2010, 11:59 AM
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Junior Member Group: Members Posts: 55 Joined: 6-March 10 From: Cincinnati, OH Member No.: 5246 |
There are likely at least two different "oceans" in Mars history. The DiAchille paper, cited in Bobby's post, analyzed valley networks and deltas from the Noachian period (>3.5 billion years ago.) when climatic conditions were very different than today. Some temporary bodies of water (or mud) probably formed much later in the northern hemisphere in association with the hugh outflow channels carved during the Hesperian (maybe 500 to 1,000 million years after the earlier ocean--absolute dates are uncertain). The chemical environments (pH etc.) were likely very different during each.
What's puzzling to me is that an ancient, cratered Noachian surface is preserved at realtively shallow depths in the northern hemisphere, suggesting that the sediment layers from both oceanic events are fairly thin. Mars is such a fascinating enigma. Tom |
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