Sirenum Fossae Troughs
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Sirenum Fossae Troughs

November 6, 2005

This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows two troughs/depressions formed along the trend of the Sirenum Fossae, a suite of very extensive troughs formed by faults that are radial to the giant Tharsis Bulge. As the Tharsis region bulged outward, adjacent terrain expanded and formed a series of long, extensional fault systems.

Location near: 26.4°S, 142.4°W

Image width: ~3 km (~1.9 mi)

Illumination from: lower left

Season: Southern Spring

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