Shoshonites in southern Tibet record Late Jurassic rifting of a Tethyan intraoceanic island arc

Aitchison, J.C., McDermid, I.R.C., Ali, J.R., Davis, A.M. and Zyabrev, S.V. (2007) Shoshonites in southern Tibet record Late Jurassic rifting of a Tethyan intraoceanic island arc. The Journal of Geology, 115 2: 197-213. doi:10.1086/510642

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Author Aitchison, J.C.
McDermid, I.R.C.
Ali, J.R.
Davis, A.M.
Zyabrev, S.V.
Title Shoshonites in southern Tibet record Late Jurassic rifting of a Tethyan intraoceanic island arc
Journal name The Journal of Geology   Check publisher's open access policy
ISSN 0022-1376
1537-5269
Publication date 2007
Year available 2007
Sub-type Article (original research)
DOI 10.1086/510642
Open Access Status File (Publisher version)
Volume 115
Issue 2
Start page 197
End page 213
Total pages 17
Place of publication Chicago, IL United States
Publisher University of Chicago Press
Language eng
Formatted abstract
Detailed field mapping combined with a petrologic and geochemical investigation of the Zedong terrane within the Yarlung Tsangpo suture zone provides insights to the evolution of now mostly subducted portions of Tethys during the Late Jurassic. The terrane is dominated by volcanic rocks of shoshonitic affinity, which were erupted in a submarine oceanic island arc setting. The volcanic island arc was built on a basement of oceanic crust, and the shoshonites locally overlie a thin section of pillowed island arc tholeiites and red ribbon-bedded radiolarian cherts. Geochemistry of the shoshonites suggests that their development occurred in a setting analogous to that of Late Miocene to Early Pliocene Fiji and was associated with an arc rifting. We speculate that this event may have been a far-field response to developments associated with Gondwana breakup
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Geography, Planning and Environmental Management Publications
 
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Created: Wed, 29 Jul 2015, 12:20:14 EST by Helen Smith on behalf of School of Geography, Planning & Env Management