Space Station Info :: Nine Planet Solar System :: History of Mars :: Geology Mars

Geology Mars

Mars is mainly composed of basalt and andesite rock on its surface, covered in many places by meters or more of a dust as fine as talcum powder. Mars Global Surveyor spacecraft observations says that the magnetic fields on Mars exposed that parts of the planet's crust has been magnetized in alternating bands, usually measuring 100 miles wide by 600 miles long (160 km by 1000 km), in a similar pattern to those found on the ocean floors of Earth.

Geology of Mars

In 1999 one fascinating theory, published saying that these bands could be evidence of the past operation of plate tectonics on Mars, although this has yet to be confirmed. New findings, published in October 2005 support this theory, and seem to indicate an early era of tectonic activity similar to that found on Earth due to sea-floor spreading .If true, the processes involved may have helped to sustain an Earth-like atmosphere by transporting carbon rich rocks to the surface, while the presence of a magnetic field would have helped to protect the planet from cosmic radiation.

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Physical Characteristics of Mars
Atmosphere of Mars
Geology of Mars
Topography of Mars
Canals of Mars
The Moons Of Mars
Exploration Of Mars
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The Mars Flag