Early Carboniferous radiolarians from north-west Thailand: palaeogeographical implications |
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| Authors: | Qinglai Feng D Helmcke C Chonglakmani R Ingavat-Helmcke & Benpei Liu |
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| Institution: | Faculty of Earth Sciences, China University of Geosciences, The People's Republic of China;, Göttingen Centre of Geosciences, University of Göttingen, Germany;, School of Geotechnology, Suranaree University of Technology, Thailand |
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| Abstract: | Moderately well-preserved radiolarian assemblages are described from bedded cherts south of Mae Hong Son, north-west Thailand. Twenty species and subspecies are identified, including one new species ( Archocyrtium sashidai Feng sp. nov.). The assemblages belong to the middle Early Carboniferous Albaillella indensis and Eostylodictya rota zones. The new data suggest that there was a pelagic basin between the Shan-Thai terrane and Gondwana during the Early Carboniferous. This implies, contrary to previous interpretations, that the Shan-Thai terrane had already rifted apart from Gondwana during the Early Carboniferous. |
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| Keywords: | Early Carboniferous Radiolaria palaeogeography Shan-Thai terrane Thailand |
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