Discovery of Middle Triassic radiolarian fauna from the Nan area along the Nan-Uttaradit suture zone, northern Thailand
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概要
- 論文の詳細を見る
A Middle Triassic radiolarian fauna is present in the siliceous rock section at the Nan area along the Nan-Uttaradit suture zone, northern Thailand. The radiolarian fauna is composed of Triassocampe deweveri, T. nishimurai, Annulotriassocampe campanilis, Cenosphaera igoi, and other species and corresponds to the Anisian (Middle Triassic) Triassocampe deweveri fauna reported from Japan, Hungary, Italy, Austria, Far East of Russia, and northern and eastern Thailand. More than fifteen radiolarian species belonging to eight genera are investigated. The radiolarian-bearing rocks were probably deposited in a pelagic environment within the Nan-Uttaradit back-arc basin between the Simao and Indochina blocks during Middle Triassic time. This suggests that the Nan-Uttaradit back-arc basin, the Palaeo-Tethys ocean and Panthalassa ocean were probably connected by seaways at this time and might have shared the same oceanic circulation system. Furthermore, the complete closure of the Nan-Uttaradit back-arc basin between the Simao and the Indochina blocks is thought to have occurred at least after the Middle Triassic.
- 日本古生物学会の論文
- 2008-12-31
著者
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Sardsud Apsorn
Department Of Mineral Resources
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SAESAENGSEERUNG DOUNGRUTAI
Graduate School of Life and Environmental Sciences, University of Tsukuba
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SASHIDA KATSUO
Graduate School of Life and Environmental Sciences, University of Tsukuba
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Sashida Katsuo
Graduate School Of Life And Environmental Sciences University Of Tsukuba
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Saesaengseerung Doungrutai
Graduate School Of Life And Environmental Sciences University Of Tsukuba
関連論文
- Late Paleozoic radiolarian faunas from northern and northeastern Thailand
- Discovery of Lower Permian radiolarian and conodont faunas from the bedded chert of the Chanthaburi area along the Sra Kaeo suture zone, eastern Thailand
- Reinterprelation of Early and Middle Ordovician conodonts from the Thong Pha Phum area, western Thailand, in the context of new material from western and northern Thailand
- Lower and Middle Ordovician conodonts from the Thung Song and Thung Wa areas, southern peninsular Thailand
- Ordovician-Silurian boundary graptolites of the Satun area, southern peninsular Thailand
- Ordovician sea-level change and paleogeography of the Sibumasu terrane based on the conodont biostratigraphy
- Discovery of Middle Triassic radiolarian fauna from the Nan area along the Nan-Uttaradit suture zone, northern Thailand
- Late Devonian to Early Carboniferous radiolarian fauna from the Pak Chom area, Loei Province, northeastern Thailand
- Additional note on earliest Cretaceous entactinarians (Radiolaria) from the Mariana Trench