2.11-A  Uplift, Isostasy, and Isostatic Adjustment : Vertical Movements of the Crust
Channel: Snow Mountain
Date: 2020-08-16

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2.11-A  Uplift, Isostasy, and Isostatic Adjustment : Vertical Movements of the Crust

In addition to the large crustal displacement driven mainly by plate tectonics, gradual up-and-down motions of the continental crust are observed at many locations around the globe. Although much of this vertical movement occurs along plate margins and is associated with active mountain building, some of it is not.

Evidence for crustal uplift occurs along the west coast of the United States. When the elevation of a coastal area remains unchanged for an extended period, a wave-cut platform develops. In parts of California, ancient wave-cut platforms can now be found as terraces hundreds of meters above sea level. Such evidence of crustal uplift is easy to find.  Unfortunately, the reason for uplift is not always as easy to determine.

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