Timothy Allen and C. Page Chamberlain, Department of Earth Sciences, Dartmouth College, Hanover, NH 03755.
The Northern-Shyok Suture and the Main Karakorum Thrust (MKT) separate rocks in the Asian plate from rocks in the Kohistan-Ladakh Island Arc. We determined the P-T history of the metamorphic rocks both north and south of this suture in effort ot place constraints on the suturing process. The terranes north and south of the MKT have different, unrelated metamorphic histories. Our data is consistent with a tectonic model that involves metamorphism of the Kohistan-Ladakh Arc due to plutonic activity and metamorphism of the Karakorum Metamorphic Complex as a result of subduction related processes. After metamorphism the two terranes were juxtaposed by the late sout directed MKT, which obscures the original Northern-Shyok Suture.
1989, Geological Society of America Abstracts with Programs, v. 21, n. 6, p. A181.