Geologic map of part of the Tyrrhena Patera region of Mars (MTM Quadrangle-20252)
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Abstract
Mars Transverse Mercator (MTM) -20252 quadrangle contains the volcano Tyrrhena Patera, a low, broad structure that has summit depressions and is dissected by prominent radial channels (fig. 1). Tyrrhena Patera is surrounded by cratered plains materials on the western edge of Hesperia Planum, ~2,000 km northeast of the center of the Hellas basin (Greeley and Guest, 1987; U. S. Geological Survey, 1991). On the basis of Mariner 9 data, Tyrrhena Patera was interpreted to be a shield volcano, composed of fluid basic or ultrabasic lavas (Peterson, 1978; Pike, 1978). Analysis of Viking Orbiter images led Greeley and Spudis (1981) to suggest that Tyrrhena Patera comprises pyroclastic deposits produced by explosive hydromagmatic eruption; Greeley and Crown (1990) support a pyroclastic origin for Tyrrhena Patera shield materials and assess several eruption styles for the volcano (see also Crown and Greeley, 1993).
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic map of part of the Tyrrhena Patera region of Mars (MTM Quadrangle-20252) |
| Series title | IMAP |
| Series number | 2556 |
| ISBN | 0607917830 |
| DOI | 10.3133/i2556 |
| Year Published | 1998 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Description | 1 Plate: 65.40 × 54.75 inches |
| Other Geospatial | Mars, Tyrrhena Patera |
| Scale | 502000 |
| Google Analytic Metrics | Metrics page |