EARTHSC 1105 Lecture Notes - Lecture 29: Death Valley National Park, Metamorphic Core Complex, Borax
28 Nov 2017
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Document Summary
10,000 years ago area home to native americans. 1849 the first white settlers entered the area. 1880"s borate and talc mining occurred in the area. 1920"s- became world"s lending source of borax (na2b4o7 -10 h2o) from evaporate deposits on the valley floor. Hottest, driest, and lowest place in north america. Maximum temperature recorded 134 f, annual precipitation 1. 7 inches/year. Physiographic province is known as the great basin and geologically the basin and range. Right-lateral strike-slip faults are also found in death valley (furnace creek fault zone). Low-angle normal faults these faults shallow at depth to a detachment surface (zone of weakness) known as a metamorphic core complex . This figure illustrates the general shallow structure of what is known as the basin and range or. Great basin region of the western united states. The faults are normal faults, which means the region has experienced extension or tension (and still is being stretched as you read this).
