In:
Terra Nova, Wiley, Vol. 20, No. 4 ( 2008-08), p. 302-308
Abstract:
Eclogites characterized by a garnet + clinopyroxene + orthopyroxene + sanidine + rutile assemblage are reported for the first time in the eastern Bangong suture, central Tibet (China). Garnet and sanidine are exsolved from clinopyroxene. Al‐exchange barometer for orthopyroxene and garnet and K concentrations in clinopyroxene indicate a peak pressure of ∼4 GPa. The occurrence of these ultrahigh‐pressure rocks implies the subduction of continental crust to a depth of 〉 130 km along the eastern Bangong suture zone during the Early Jurassic. The denudation of these ultrahigh‐pressure metamorphic rocks could have provided a significant source for the Jurassic turbidites in the western Bangong ocean basin.
Type of Medium:
Online Resource
ISSN:
0954-4879
,
1365-3121
DOI:
10.1111/ter.2008.20.issue-4
DOI:
10.1111/j.1365-3121.2008.00821.x
Language:
English
Publisher:
Wiley
Publication Date:
2008
detail.hit.zdb_id:
1000080-X
detail.hit.zdb_id:
2020958-7
SSG:
13
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