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Was Late Cretaceous-Paleocene obduction of ophiolite complexes the primary cause of crustal thickening and regional metamorphism in the Pakistan Himalaya?

Abstract:

Regional metamorphic rocks in the Pakistan Himalaya include both UHP coesite eclogite-facies and MP/T kyanite-sillimanite-grade Barrovian metamorphic rocks. Age data show that peak metamorphism of both was c. 47 Ma. 40Ar- 39Ar hornblende cooling ages date post-peak metamorphic cooling of both through 500 °C by 40 Ma, some 20 Ma earlier than for metamorphic rocks in the central and eastern Himalaya. Typically these ages have been explained by obduction of the Kohistan arc onto the Indian plate...

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Publisher copy:
10.1144/SP338.16
Journal:
Geological Society Special Publication More from this journal
Volume:
338
Issue:
1
Pages:
345-359
Publication date:
2010-01-01
DOI:
EISSN:
2041-4927
ISSN:
0305-8719
Language:
English
Pubs id:
pubs:186319
UUID:
uuid:c88192f9-e0b8-4652-b6c2-e328847e8733
Local pid:
pubs:186319
Source identifiers:
186319
Deposit date:
2012-12-19

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