Lineament analysis and tectonic interpretation for the Tharsis region

Details Lineament analysis and tectonic interpretation for the Tharsis region Lineament analysis and tectonic interpretation for the Tharsis region

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993lpi....24...33a&link_type=abstract

In Lunar and Planetary Inst., Twenty-fourth Lunar and Planetary Science Conference. Part 1: A-F p 33 (SEE N94-12015 01-91)

Mathematics

Logic

1

Domes (Structural Forms), Mars Surface, Mars Volcanoes, Planetary Geology, Structural Properties (Geology), Tectonics, Topography, Geological Faults, Maps, Mosaics, Volcanology

Scientific paper

The Tharsis region of Mars is critical to any study of Martian tectonics. This region (65 N and 65 S latitude; 45 W to 157.5 W longitude) is characterized by an asymmetrical dome-shaped topographic high approximately 8000 km across. Affecting over 25 percent of the surface area, this region has been the center of most of the major tectonic and volcanic activity that has taken place on the Martian surface. Lineament studies are the primary tool available for studying tectonic processes on terrestrial planets such as Mars. At least three major lineament systems can be delineated in the Tharsis region; north-south and east-west trending lineament systems are superimposed on an older northwest trending lineament system. Four centers of uplift have been identified based on the occurrence of radial fracture patterns. Preliminary results indicate that the formation of the Tharsis Dome may not have resulted from a single uplift event, but may instead have resulted from as many as four uplift events. The northwest trending fracture may represent a pre-existing zone of weakness which contributed to the early formation of the Tharsis Dome. The 1:2,000,000 scale photo mosaic maps of Mars were examined and lineaments were identified. The end points of each lineament were measured and recorded in an X-Y reference coordinate frame.

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