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Volcanoes and volcanic provinces - Martian western hemisphereThe recognition of some Martian landforms as volcanoes is based on their morphology and geologic setting. Other structures, however, may exhibit classic identifying features to a varying or a less degree; these may be only considered provisionally as having a volcanic origin. Regional geologic mapping of the western hemisphere of Mars from Viking images has revealed many more probable volcanoes and volcanotectonic features than were recognized on Mariner 9 pictures. These abundant volcanoes have been assigned to several distinct provinces on the basis of their areal distribution. Although the Olympus-Tharsis region remains as the principle center of volcanism on Mars, four other important provinces are now also recognized: the lowland plains, Tempe Terra plateau, southern highlands (in the Phaethontis and Thaumasia quadrangles), and a probable ignimbrite province, situated along the highland-lowland boundary in Amazonis Planitia. Volcanoes in any one province vary in morphlogy, size, and age, but volcanoes in each province tend to have common characteristics that distinguish that particular group.
Document ID
19830034343
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Scott, D. H.
(U.S. Geological Survey Flagstaff, AZ, United States)
Date Acquired
August 11, 2013
Publication Date
November 30, 1982
Subject Category
Lunar And Planetary Exploration
Accession Number
83A15561
Funding Number(s)
CONTRACT_GRANT: NASA ORDER W-13709
Distribution Limits
Public
Copyright
Other

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