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 deposition of large rocks or due to cementation. In either case erosion would erode the surrounding land but leave the old channel as a raised ridge because the ridge will be more resistant to erosion. An image below, taken with HiRISE shows sinuous ridges that may be old channels that have become inverted.
-
Meandering Ridges that are probably inverted stream channels. Image taken with HiRISE.
-
CTX image of craters with black box showing location of next image.
-
Image from previous photo of a curved ridge that may be an old stream that has become inverted. Image taken with HiRISE under the HiWish program.
-
Sinuous Ridges within a branching fan in lower member of Medusae Fossae Formation, as seen by HiRISE.
Read more about this topic: Aeolis Quadrangle
Famous quotes containing the words inverted and/or relief:
“Ulysses ... is a dogged attempt to cover the universe with mud, an inverted Victorianism, an attempt to make crossness and dirt succeed where sweetness and light failed, a simplification of the human character in the interests of Hell.”
—E.M. (Edward Morgan)
“As a particularly dramatic gesture, he throws wide his arms and whacks the side of the barn with the heavy cane he uses to stab at contesting bidders. With more vehemence than grammatical elegance, he calls upon the great god Caveat Emptor to witness with what niggardly stinginess these flinty sons of Scotland make cautious offers for what is beyond any question the finest animal ever beheld.”
—Administration in the State of Arka, U.S. public relief program (1935-1943)