Geologic Map of the MTM-20272 and-25272 Quadrangles, Tyrrhena Terra Region of Mars
Scientific Investigations Map
2934
Prepared for the National Aeronautics and Space Administration
By: Scott C. Mest and David A. Crown
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Abstract
Introduction
Mars Transverse Mercator (MTM) -20272 and -25272 quadrangles (lat 17.5?-27.5? S., long 270?-275? W.) cover part of the highlands of Tyrrhena Terra north of Hellas Planitia. The surface of the Tyrrhena Terra region records a complex history of impact cratering and modification by fluvial and eolian activity. The map area consists primarily of intercrater plains, impact crater material, and crater floor material. An extensive valley network, Vichada Valles, as well as several smaller networks, dissects the northern part of the map area. The abundance and widespread nature of fluvial features within the map area have significant implications for past Martian environmental conditions. The degraded terrains surrounding Hellas Planitia provide constraints on the role and timing of volatile-driven activity in the evolution of the highlands. The geologic history of this area may have been influenced not only by the presence of Hellas Planitia but also by other buried impact basins.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic Map of the MTM-20272 and-25272 Quadrangles, Tyrrhena Terra Region of Mars |
| Series title | Scientific Investigations Map |
| Series number | 2934 |
| ISBN | 1411310624 |
| DOI | 10.3133/sim2934 |
| Edition | Version 1.0 |
| Year Published | 2006 |
| Language | ENGLISH |
| Contributing office(s) | Astrogeology Science Center |
| Description | map (41x37 in); pamphlet 15 p. |
| Projection | Mars Transverse Mercator |
| Scale | 1004000 |
| Google Analytic Metrics | Metrics page |