The Kohistan Arc Complex (KAC) is a uniquely preserved island arc exposing the world 's most complete cross-section through arc-generated crust. Island arcs are suggested to generate andesitic crust reminiscent of bulk continental crust compositions. However, mechanisms by which the basaltic parent is differentiated towards a composition akin to bulk continental crust is debated. Commonly suggested to occur through crustal underplating and delamination, geochronological data should exhibit a definable age gradient throughout the arc. New ID-TIMS U-Pb ages provide the first radio-isotopic evidence of a younging age gradient in the KAC, providing the first geochronological evidence for crustal underplating and delamination.
|Award date||14 Feb 2017|
|Publication status||Unpublished - 2016|