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泰国北部中三叠世放射虫硅质岩及其地球化学和沉积环境意义
引用本文:Hathaithip THASSANAPAK,Mongkol UDCHACHON,FENG Qing-lai,Chongpan CHONGLAKMANI. 泰国北部中三叠世放射虫硅质岩及其地球化学和沉积环境意义[J]. 地球学报, 2012, 33(S1): 67-68
作者姓名:Hathaithip THASSANAPAK  Mongkol UDCHACHON  FENG Qing-lai  Chongpan CHONGLAKMANI
作者单位:Palaeontological Research and Education Centre, Mahasarakham University;Department of Biology, Faculty of Science, Mahasarakham University;State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences;School of Geotechnology, Institute of Engineering, Suranaree University of Technology
摘    要:Bedded cherts collected from northern Thailand, including Chiang Dao, Lamphun and Den Chai contain Middle Triassic radiolarian faunas. The faunas from Chiang Dao can be divided into two assemblages. The first assemblage includes Eptingium and other co-occurring species such as Cryptostephanidium cornigerum Dumitric?, Plafkerium antiquum Sugi-yama, Pseudostylosphaera compacta (Nakaseko and Nishimura), P. longispinosa Kozur and Mostler, P. acrior (Bragin), P. japonica (Nakaseko and Nishi-mura), Parasepsagon sp. cf. P. variabilis (Nakaseko and Nishimura), Hozmadia sp. cf. H. gifuensis Sugi-yama, Triassospongosphaera multispinosa (Kozur and Mostler), Celluronta donax Sugiyama, Oertlispongus sp. cf. O. diacanthus Sugiyama, Paroertlispongus multispinosus Kozur and Mostler, etc. The second as-semblage consists of Triassocampe deweveri (Na-kaseko and Nishimura), Yeharaia annulata Nakaseko and Nishimura, Hindeostylosphaera spinulosa (Na-kaseko and Nishimura), Plafkerium contortum Dumitric?, Kozur and Mostler, Pseudostylosphaera goestlingensis (Kozur and Mostler), P. timorensis Sa-shida and Kamata and Paroertlispongus rarispinosus Kozur and Mostler. These assemblages indicate upper and uppermost Anisian, respectively.

关 键 词:Middle Triassic   Radiolarian chert   Northern Thailand   Geochemistry   Depositional environment

Middle Triassic Radiolarian Cherts from Northern Thailand and Their Geochemical Constraint for Depositional Environment
Affiliation:Palaeontological Research and Education Centre, Mahasarakham University;Department of Biology, Faculty of Science, Mahasarakham University;State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences;School of Geotechnology, Institute of Engineering, Suranaree University of Technology
Abstract:Bedded cherts collected from northern Thailand, including Chiang Dao, Lamphun and Den Chai contain Middle Triassic radiolarian faunas. The faunas from Chiang Dao can be divided into two assemblages. The first assemblage includes Eptingium and other co-occurring species such as Cryptostephanidium cornigerum Dumitric?, Plafkerium antiquum Sugi-yama, Pseudostylosphaera compacta (Nakaseko and Nishimura), P. longispinosa Kozur and Mostler, P. acrior (Bragin), P. japonica (Nakaseko and Nishi-mura), Parasepsagon sp. cf. P. variabilis (Nakaseko and Nishimura), Hozmadia sp. cf. H. gifuensis Sugi-yama, Triassospongosphaera multispinosa (Kozur and Mostler), Celluronta donax Sugiyama, Oertlispongus sp. cf. O. diacanthus Sugiyama, Paroertlispongus multispinosus Kozur and Mostler, etc. The second as-semblage consists of Triassocampe deweveri (Na-kaseko and Nishimura), Yeharaia annulata Nakaseko and Nishimura, Hindeostylosphaera spinulosa (Na-kaseko and Nishimura), Plafkerium contortum Dumitric?, Kozur and Mostler, Pseudostylosphaera goestlingensis (Kozur and Mostler), P. timorensis Sa-shida and Kamata and Paroertlispongus rarispinosus Kozur and Mostler. These assemblages indicate upper and uppermost Anisian, respectively.
Keywords:Middle Triassic   Radiolarian chert   Northern Thailand   Geochemistry   Depositional environment
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