Tetra- and pentacyclic alkanes in the Cretaceous/Tertiary boundary sediments at Kawaruppu, Hokkaido, Japan

Researches in Organic Geochemistry 17 巻 33-43 頁 2002-06-30 発行

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タイトル ( eng )	Tetra- and pentacyclic alkanes in the Cretaceous/Tertiary boundary sediments at Kawaruppu, Hokkaido, Japan
作成者	Yabuta Hikaru Mita Hajime Shimoyama Akira
収録物名	Researches in Organic Geochemistry
巻	17
開始ページ	33
終了ページ	43
抄録	Twenty two steranes and 17 triterpanes were detected in the Cretaceous-Tertiary (K/T) boundary sediments at Kawaruppu, Hokkaido, Japan. These steranes and triterpanes were detected at a concentration level of 0.001-0.1nmol g-1. Their concentrations were smaller within the K/T boundary claystone than in the sediments above and below the claystone, which are likely related to the large biomass extinction event at the end of the Cretaceous. The concentrations of 5α-cholestane and the relative ones of 17α,21β-hopane in the sediments above the boundary claystone were about a half of those in the sediments below the claystone, whereas those of 5α-ergostane, 5α-stigmastane, and oleanane in the sediments above were less than a half abundance level of those in the sediments below the claystone. Diastereomer ratios of steranes and triterpanes were nearly constant over the sediments. No tricyclic alkanes were detected in the sediments.
内容記述	This work was supported by the Grant-in-Aid for ScientificResearch (B) No.11440166 from the Ministry of Education, Science, Sports and Culture, Japan and the Research Grant for Fellowship No.00007064 to H. Y. from Japanese Society for the Promotion of Science.
言語	英語
資源タイプ	学術雑誌論文
出版者	The Japanese Association of Organic Geochemists 日本有機地球化学会
発行日	2002-06-30
権利情報	Copyright (c) 2002 The Japanese Association of Organic Geochemists 本文データは学協会の許諾に基づきCiNiiから複製したものである
出版タイプ	Version of Record（出版社版。早期公開を含む）
アクセス権	オープンアクセス
収録物識別子	[ISSN] 1344-9915 [ISSN] 2189-7891 [ISSN] 1344-9915 [DOI] 10.20612/rog.17.0_33 [DOI] https://doi.org/10.20612/rog.17.0_33 [NAID] 110007504571 ～の異版である