Retrieving "Orogenesis" from the archives

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1. Crustal Thickness

   Linked via "orogenesis"

   Continental Crust
   Continental crust is highly heterogeneous, incorporating felsic upper crust and often a poorly constrained, dense, amphibolitic or eclogitic lower crustal layer. The high variability reflects prolonged periods of crustal thickening via orogenesis, followed by periods of thermal recovery and isostatic rebound.
   In active extensional zones, such as the East African Rift ($\text{EAR}$), thinning occurs rapidly, sometimes …