Marte Vallis
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Marte Vallis based on THEMIS day-time image
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Marte Vallis is a valley in the Amazonis quadrangle of Mars, located at 15 North and 176.5 West. It is 185 km long and was named for the Spanish word for "Mars".[2] It has been identified as an outflow channel, carved in the geological past by catastrophic release of water from aquifers beneath the Martian surface.[3]
Marte Vallis is the site of the first discovery of columnar jointing on Mars.[1]
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Streamlined Island in Marte Vallis, as seen by HiRISE. The enlarged image gives a good view of dark slope streaks. Island is just to the west of Pettit Crater. Scale bar is 500 meters long.
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Layers in old crater rim, in Marte Vallis as seen by HiRISE under HiWish program
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Close view of layers from previous image, as seen by HiRISE under HiWish program Some dark slope streaks are visible.
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Columinar Jointing in Yellowstone National Park.
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Columnar jointing in the basalt of the Giant's Causeway in Ireland
References
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- ↑ 1.0 1.1 Milazzo, M.P., Keszthelyi, L.P., Jaeger, W.L. Rosiek, M., Mattson, S., Verba, C., Beyer, R.A., Geissler, P.E., McEwen, A.S., and the HiRISE Team. (2009) Discovery of columnar jointing on Mars. Geology. 37(2), 171–174. Abstract
- ↑ http://planetarynames.wr.usgs.gov/
- ↑ Carr, M.H. (2006), The Surface of Mars. Cambridge Planetary Science Series, Cambridge University Press.
