| 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. |
| Genre: | USGS Numbered Series |
| ProdID: | 79661 |
| Citation Author: | Mest, Scott C.; Crown, David A. |
| Citation Contributing Office: | Astrogeology Research Center |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | Version 1.0 |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | ENGLISH |
| Citation Larger Work Title: | |
| Citation LatN: | -0275000 |
| Citation LatS: | -0175000 |
| Citation LonE: | -2700000 |
| Citation LonW: | -2750000 |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | map (41x37 in); pamphlet 15 p. |
| Citation Projection: | Mars Transverse Mercator |
| Citation Public Comments: | Prepared for the National Aeronautics and Space Administration |
| Citation Publisher: | |
| Citation Series: | Scientific Investigations Map |
| Citation Series Code: | SIM |
| Citation Series Number: | 2934 |
| Citation Search Results Text: | Geologic Map of the MTM-20272 and-25272 Quadrangles, Tyrrhena Terra Region of Mars; 2006; SIM; 2934; Mest, Scott C.; Crown, David A. |
| Citation Start Page: | |
| Citation Volume: | |
| Citation Year: | 2006 |
| Type: | citation/reference |
| Text: | Geologic Map of the MTM-20272 and-25272 Quadrangles, Tyrrhena Terra Region of Mars; 2006; SIM; 2934; Mest, Scott C.; Crown, David A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sim/2006/2934/ |
| Date Other: | Wed, 28 Feb 2007 00:00 -0600 |
| Publisher: | |
