| Abstract: | The northern plains of Mars contain a vast deposit, covering one-sixth of the planet, that apparently resulted in extensive lithospheric deformation. The center of the deposit may be as much as 2-3 km thick. The deposit has lobate margins consistent with the flow of fluidized debris for hundreds to thousands of kilometers derived from highland and high-plains sources. The deposit surface lowers inward by ???900 m in places and is locally bordered by a bulge ???300 m high. Similar deformation accompanied development of Pleistocene ice sheets on Earth. The lack of burial of a large inlier of older terrain and the response time of the mantle to the loading require that the deposit was emplaced in <1000 yr, assuming that the deposit was originally flat. We account for what may have been the largest catastrophic erosional and/or depositional event in solar system history by invoking pore-filling subsurface CO2 as an active agent in the processes of source-rock collapse and debris flow. |
| Genre: | Article |
| ProdID: | 70024046 |
| Citation Author: | Tanaka, K. L.; Banerdt, W. B.; Kargel, J. S.; Hoffman, N. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 430 |
| Citation Issue: | 5 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Geology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 4 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Huge, CO2-charged debris-flow deposits and tectonic sagging in the northern plains of Mars; 2001; Article; Journal; Geology; Tanaka, K. L.; Banerdt, W. B.; Kargel, J. S.; Hoffman, N. |
| Citation Start Page: | 427 |
| Citation Volume: | 29 |
| Citation Year: | 2001 |
| Type: | citation/reference |
| Text: | Huge, CO2-charged debris-flow deposits and tectonic sagging in the northern plains of Mars; 2001; Article; Journal; Geology; Tanaka, K. L.; Banerdt, W. B.; Kargel, J. S.; Hoffman, N. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 2001 00:00 -0600 |
| Publisher: | |
