Late Triassic bivalves from Sambosan accretionary complex, southwest Japan, and their biogeographic implications
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概要
- 論文の詳細を見る
This paper records eight species of Late Triassic Tethyan bivalves from the oceanic limestone and associated basaltic volcaniclastic rocks which belong to the Sambosan accretionary complex in southwest Japan. The bivalve-bearing succession consists of basaltic volcaniclastic rocks (ca. 60m thick) conformably succeeded by dark gray bedded limestone (ca. 10m thick), which is, in turn, overlain by massive limestone (ca. 50m thick). The succession is dated as Carnian to Norian by means of conodonts and bivalves. Upper Triassic bivalves, including Gruenewaldia decussata, G. woehrmanni and Costatoria gold-fussi, are recorded from the examined succession. Their occurrence implies a Tethyan affinity for the examined Sambosan oceanic rocks. No bivalve species characteristic of a high latitudinal zone occurs in this succession.
- 日本古生物学会の論文
- 2005-04-30
著者
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Onoue Tetsuji
Department Of Earth And Environmental Sciences Kagoshima University
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Onoue Tetsuji
Department Of Earth And Planetary Sciences Graduate School Of Science Kyushu University:(present Add
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Tanaka Hitoshi
Department Of Civil Engineering Tohoku University
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