The crater is on the opposite side of Mars from the Tharsis Bulge. The Hellas crater has the lowest elevation on Mars, and is nearly round, suggesting a perpendicular hit. This crater is estimated at 3.9 billion years old, which coincides with new mineral evidence that 4 billion years ago Mars entered a volcanic state as reported in this article: http://news.bbc.co.uk/2/hi/science/nature/4926370.stm I am suggesting the impact which caused the Hellas crater was intense enough to cause the Tharsis bulge and major volcanic activity which created Olympus Mons, and the three other major volcanoes of this region.
2006-09-28
04:56:24
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1 answers
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asked by
mindshift
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Science & Mathematics
➔ Earth Sciences & Geology