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Arches National Park Geology Tour provides an extensive, visually rich description of the geology of Arches, by Deborah Ragland, Ph.D. See our DVD collection.
A map of the surface of Mars, showing where some volcanoes are located.
Click on image for full size
Image from: NASA

Martian Volcanoes

On this map of Mars, the lightly cratered Tharsis Ridge is shown, as well as the heavily cratered Martian highlands (near the bottom of the picture), and Valles Marineris to the right. The volcanoes are the yellow and red dots in the sea of blue in this image.

The Tharsis Ridge is the home of several volcanoes, including Olympus Mons. Olympus Mons is the leftmost volcano in the image. The three large volcanoes which accompany Olympus Mons on the Tharsis Ridge are Arsia Mons, Pavonis Mons, and Ascraeus Mons. Measurements returned by Mars Global surveyor demonstrate the very large size of these volcanoes. Other volcanos named Tharsis Tholus, Ceraunius Tholus, Elysium Mons, and Albov Tholus are found in the right-hand side of the large topographic map of Mars, as well as the very large version of the map to the left.

These volcanoes came into being early in Martian history.


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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA