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Tectonic implications of the Nan suture zone and its relationship to the Sukhothai Fold Belt, northern Thailand

Citation

Singharajwarapan, S and Berry, RF, Tectonic implications of the Nan suture zone and its relationship to the Sukhothai Fold Belt, northern Thailand, Journal of Asian Earth Sciences, 18, (6) pp. 663-673. ISSN 1367-9120 (2000) [Refereed Article]

DOI: doi:10.1016/S1367-9120(00)00017-1

Abstract

The Nan Suture and the Sukhothai Fold Belt reflect the processes associated with the collision between the Shan-Thai and Indochina Terranes in southeast Asia. The Shan-Thai Terrane rifted from Gondwana in the Early Permian. As it drifted north a subduction complex developed along its northern margin. The Nan serpentinitic melange is a thrust slice within the Pha Som Metamorphic Complex and in total this unit is a Late Permian accretionary complex containing offscraped blocks from subducted oceanic crust of Carboniferous and Permian age. The deformational style within the Pha Som Metamorphic Complex supports a west-dipping subduction zone. The Late Permian to Late Triassic fore-arc basin sediments are preserved in the Sukhothai Fold Belt and include a near continuous sedimentary record, at least locally. The whole sequence was folded and complexly thrust in the Late Triassic as a result of the collision. Late syn- to post-kinematic granites place an upper limit of 200 Ma on the time of collision. Post-orogenic sediments prograded across the suture in the Jurassic. (C) 2000 Elsevier Science Ltd. All rights reserved.

Item Details

Item Type:Refereed Article
Research Division:Earth Sciences
Research Group:Geology
Research Field:Tectonics
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Berry, RF (Associate Professor Ron Berry)
ID Code:20610
Year Published:2000
Web of Science® Times Cited:50
Deposited By:Earth Sciences
Deposited On:2000-08-01
Last Modified:2001-06-12
Downloads:0

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