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transtension

1. n. [Geology]

The simultaneous occurrence of strike-slip faulting and extension, rifting, or divergence of the Earth's crust. In areas of transtension, rocks can be faulted downward to form a negative flower structure. Areas of strike-slip faulting in converging crust are experiencing transpression, in which rocks can be faulted upwards to form a positive flower structure.

See: crustfaultflower structureplate tectonicsriftstrike-slip faulttranspression

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