Inverted Relief
Some places on Mars show inverted relief. In these locations, a stream bed may be a raised feature, instead of a valley. The inverted former stream channels may be caused by the depositon of large rocks or due to cementation. In either case erosion would erode the surrounding land and leave the old channel as a raised ridge because the ridege will be more resistant to erosion. An image below, taken with HiRISE of Miyamoto Crater shows a ridge that is an old channel that has become inverted.
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Inverted Channel in Miyamoto Crater, as seen by HiRISE. The scale bar is 500 meters long.
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CTX context image for next image that was taken with HiRISE. Note long ridge going across image is probably an old stream. Box indicates area for HiRISE image.
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Example of inverted terrain in Parana Valles region, as seen by HiRISE under the HiWish program.
Read more about this topic: Margaritifer Sinus Quadrangle
Famous quotes containing the words inverted and/or relief:
“Can they never tell
What is dragging them back, and how it will end? Not at night?
Not when the strangers come? Never, throughout
The whole hideous inverted childhood? Well,
We shall find out.”
—Philip Larkin (1922–1986)
“Just across the Green from the post office is the county jail, seldom occupied except by some backwoodsman who has been intemperate; the courthouse is under the same roof. The dog warden usually basks in the sunlight near the harness store or the post office, his golden badge polished bright.”
—Administration for the State of Con, U.S. public relief program (1935-1943)