Journal
GONDWANA RESEARCH
Volume 44, Issue -, Pages 54-66Publisher
ELSEVIER
DOI: 10.1016/j.gr.2016.12.003
Keywords
Lower Permian conodonts; Tethys; Chiang Mai-Chiang Rai Suture Zone; Inthanon Zone; Ocean Plate Stratigraphy
Categories
Funding
- Australian Research Council
- NSERC Discovery Grant
- Grants-in-Aid for Scientific Research [16K05579] Funding Source: KAKEN
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Lower Permian (lower Sakmarian) conodonts are reported from a coherent section of Ocean Plate Stratigraphy, and from a limestone block in the Palaeo-Tethys suture zone between Lamphun and Lampang, south of Chiang Mai, northern Thailand. Conodont species fromboth the pelagic limestones of the OPS section and the limestone block are deep-water forms with distinctive biogeographic affinities comparable to faunas of the Urals and North American Mid-Continent. A new name, Chiang Mai-Chiang Rai Suture Zone, is here proposed for the Palaeo-Tethys suture in northern Thailand that forms the boundary between the Sibumasu Terrane and the Sukhothai Arc terrane. The Inthanon Zone of northern Thailand is interpreted as representing a fold and thrust belt west of the Chiang Mai-Chiang Rai Suture Zone, which comprises Sibumasu Terrane continental margin rocks and remnant klippen of Chiang Mai-Chiang Rai Suture Zone rocks thrust as a nappe westward during the Triassic collision between Sibumasu and the Sukhothai Arc/Indochina Terrane. (C) 2016 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
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