Everything about The Tharsis totally explained
The
Tharsis region on
Mars is an enormous
volcanic plateau located on Mars' equator, at the western end of
Valles Marineris. Its name comes from the Bible, where it was the name for the land at western extremity of the known world. (See also
Tarshish.)
It contains the Tharsis
Bulge, on which some of the solar system's largest
volcanos are located.
Olympus Mons formed by a
mantle plume over a period of about one hundred million years during the
Noachian epoch (between 3.8 and 3.5 billion years ago).
The vast size of the Tharsis Bulge had a great impact on the geology of Mars. Tharsis is surrounded by a ring-shaped topographical depression called the Tharsis trough, and on the opposite side of the planet is a smaller bulge called
Arabia Terra which may have formed as a result of the weight of Tharsis. These features were a major influence on the formation of Mars' drainage valleys, most of which formed in the late Noachian. The large quantities of
carbon dioxide and
water vapor that could have been outgassed by Tharsis
magma may have also played a significant role in Mars' wet period;
Roger J. Phillips calculated in 2001 that it could have formed a 1.5-
bar carbon dioxide atmosphere and a global layer of water that averaged 120 meters thick.
Alba Patera is a unique volcanic feature to the north of the Tharsis region.
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