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Preliminary geologic mapping near the nilosyrtis mensae, mars
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Williams, Steven H. Zimbelman, James R. |
| Copyright Year | 1990 |
| Description | Virtually the entire map area is mantled by an irregular deposit of material that is apparently fine-grained and erodible. It is also extremely young, as there is not a single crater larger than 1 km in the map area that was emplaced atop the mantle. Knobs abound in the study area; many are presumably caused by the mantling of pre-existing topography. In many cases the older knob of the core is exposed. Many such knob cores are surrounded by small scarplets; it is not yet clear whether the scarplets are the eroded edges of mantle beds that at one time draped over the knob core and have been subsequently exposed by erosion, or whether they are eroded versions of lobate debris aprons. Many craters in the study area contain concentric crater fill, which may indicate downslope movement of volatile-rich materials or repeated cycles of aeolian gradation. |
| File Size | 1496237 |
| Page Count | 15 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910013696 |
| Archival Resource Key | ark:/13960/t28963s4p |
| Language | English |
| Publisher Date | 1990-01-01 |
| Access Restriction | Open |
| Subject Keyword | Lunar And Planetary Exploration Cycles Deposits Mars Planet Mapping Edges Cores Geological Surveys Craters Topography Mars Surface Debris Wind Meteorology Erosion Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
