このエントリーをはてなブックマークに追加
ID 48603
本文ファイル
著者
Mita, Hajime
Shimoyama, Akira
抄録(英)
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.
掲載誌名
Researches in Organic Geochemistry
17巻
開始ページ
33
終了ページ
43
出版年月日
2002-06-30
出版者
The Japanese Association of Organic Geochemists
日本有機地球化学会
ISSN
1344-9915
2189-7891
1344-9915
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
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
関連情報URL
関連情報URL(IsVersionOf)
https://ci.nii.ac.jp/naid/110007504571/
部局名
理学研究科