Mathematics – Logic
Scientific paper
Sep 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..55..157b&link_type=abstract
Earth and Planetary Science Letters, Volume 55, Issue 1, p. 157-162.
Mathematics
Logic
28
Scientific paper
We report three 40Ar/39Ar dates (on stratigraphically located samples) of 82+/-6 Ma from a syenite cutting the Indus suture zone ophiolitic mélange and about 39 and about 45 Ma from granodiorite intrusions north of the suture zone. Sedimentological observations indicate Eocene to Miocene deposition of coarse clastics by very large braided and meandering streams in a continental back-arc setting. These observations suggest that the ophiolitic mélanges of the Indus suture zone were emplaced in the late Cretaceous, shortly after a major change in plate motions in the Indian Ocean: they further suggest that an Andean-type magmatic arc developed on the northern edge of the Indian plate during the Eocene and Oligocene.
Brookfield M. E.
Reynolds P. H.
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