Keywords:
suite of features typical of fretted terrain (e.g., lobate debris aprons, LDA; and lineated valley fill, LVF) (Sharp, 1973; Squyres, 1978, 1979; Malin and Edgett, 2001). Hypotheses explaining the forma-tion of these unusual landforms range from entirely water-free processes to those requiring the de...
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| Format: | Text |
| Language: | English |
| Published: |
2010
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.654.9034 http://planetary.brown.edu/pdfs/3798.pdf |
| Summary: | suite of features typical of fretted terrain (e.g., lobate debris aprons, LDA; and lineated valley fill, LVF) (Sharp, 1973; Squyres, 1978, 1979; Malin and Edgett, 2001). Hypotheses explaining the forma-tion of these unusual landforms range from entirely water-free processes to those requiring the deposition and maintenance of hundreds of meters of nearly pure ice. For example, Zimbelman et al. (1989) accounts for CCF by the emplacement and removal sionally-emplaced pore ice; while Squyres (1979) and Squyres and Carr (1986) extend this rock-glacier-like mechanism (e.g., Haeberli et al., 2006) to lobate debris aprons and concentric crater fill. A greater role for internally-deforming ice in LVF processes was pro-posed by Lucchitta (1984), drawing explicit analogs between lin-eated valley fill and polythermal Antarctic glaciers. In a study of large craters in the Vastitas Borealis Formation, Kreslavsky and Head (2006) suggest a range of crater-filling mechanisms to ac- |
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