01 Jan 2012
The Claritas Fossae region is characterised by systems of "graben" running mainly north-west to south-east. A graben forms when a block of the planet's crust drops down between two faults, due to extension, or pulling, of the crust. MRO.
By: Universal History Archive
01 Sep 2009
Alaska Earthquake March 27, 1964, A Subsidence Trough (Or Graben) Formed At The Head Of The L Street Landslide In Anchorage During The Earthquake, The Slide Block, Which Is Virtually Unbroken Ground To The Left Of The Graben, Moved To The Left, The S
By: Education Images