Answers

2014-05-23T11:38:35+05:30
A horst and graben is a crustal-extension structure , composed of a series of normal faults  , typical of the basin and range region of the US and Turkey's West Anatolian Extension Province. from the surface they appear as a series of ridges(horst)  and valleys(grabens)  that run perpendicular to the direction of extension .
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