Sirenum Fossae Troughs
August 18, 2004
The martian crust expanded and cracked in patterns radial to the great Tharsis Bulge; one suite of troughs and cracks is the Sirenum Fossae. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows two troughs and the bouldery debris shed from their walls. The image is located near 29.8Â°S, 147.9Â°W. The picture covers an area about 3 km (1.9 mi) across and is illuminated by sunlight from the upper left.
Topics: Sirenum Fossae, Memnonia quadrangle, Planetary geology, Environment, Mars Global Surveyor, Tractus Fossae, Arcadia quadrangle, Tharsis quadrangle, Fossa, Mars