| Title Transcription | トイシソウ ノ ナカニ P T キョウカイ ガ アルカ : フ トリアスキ コセイ ノ ホウサンチュウ ニツイテ
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| Title Alternative (English) | P/T boundary occurs in the“Tolshi type”shale of Southwest Japan-Appendix : Early Triassic radiolarians
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| File | |
| language |
jpn
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| Author |
Yamashita, Masayuki
Ishida, Koutaro
Yamaoka, Yuji
Goto, Hirokazu
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| Description | The P/T (Permian/Triassic) boundary is one of the most important boundary for phanerozoic geohistory which is said to be a drastic change of the lives between the Paleozoic and Mesozoic. The boundary rocks have been examined in the shallow marine sediments of the Tethyan regions and less knowledge has been obtained from the pelagic sediments.
Recent progress of the radiolarian biostratigraphy together with conodont zonation reveals the probable Latest Permian cherts of Southwest Japan，and possible P/T boundary lies in the overlying "Toishi"rocks (siliceous claystones). Presumed succession of the Late Permian to Early Triassic pelagic sediments is as follows in descending order. 1 probable Spathian (Early Triassic) bedded cherts 2 alternating beds of bedded cherts and siliceous claystones 3 siliceous claystones (Toishi rocks) including black organic mudstones 4 black mudstones 5 Late Permian Meoalbaillella bedded cherts |
| Journal Title |
Geological reports of Shimane University
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| Volume | 10
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| Start Page | 47
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| End Page | 52
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| ISSN | 0287816X
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| Published Date | 1991-07-30
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| NCID | AN00054980
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| DOI（SelfDOI） | |
| Publisher | 島根大学理学部地質学教室
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| Publisher Aalternative | Department of Geology, Faculty of Science, Shimane University
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| NII Type |
Departmental Bulletin Paper
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| Format |
PDF
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| Text Version |
出版社版
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| OAI-PMH Set |
Faculty of Science and Engineering
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| Remark | 1-11 / 1982-1992
島田昱郎教授退官記念論誌集
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| 他の一覧 |
