Organic Geochemical Characterization of Hydrothermally-altered Sediment from Lake Usori, Osorezan
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- Ogihara Shigenori
- Department of Earth & Planetary Science, The University of Tokyo
Bibliographic Information
- Other Title
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- 熱水変質を被った恐山宇曽利湖堆積物の有機地球化学的特徴
- ネッスイ ヘンシツ オ オオッタ オソレザン ウソリコ タイセキブツ ノ ユウキ チキュウ カガクテキ トクチョウ
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Abstract
Hydrothermally-altered organic-rich lake sediment was collected from Lake Usori, Osorezan. The biomarker composition and carbon isotopic composition of individual n-alkanes were examined on this sample, and the characterization was carried out to compare with reservoir petroleum and hydrothermal petroleum. <br>The studied lake sediment is characterized by odd dominant n-alkane, a little amount of isoprenoid alkane and alkylaromatic hydrocarbon, and lack of UCM. These characteristics are different to the composition of both reservoir and hydrothermal petroleum. A significant amount of heterocyclic compounds and 17β(H)-hopane in this sample are similar to the composition of hydrothermal petroleum, but the concentration of PAHs, hopene and sterene in studied sample are much lower than those of hydrothermal petroleum. <br>Carbon isotopic compositions of individual n-C17-C30 alkanes decrease with increasing carbon number. The decrement of δ13C value is about 10‰.
Journal
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- Researches in Organic Geochemistry
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Researches in Organic Geochemistry 16 (0), 19-25, 2001
The Japanese Association of Organic Geochemists
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Details 詳細情報について
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- CRID
- 1390282680389867648
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- NII Article ID
- 110007504564
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- NII Book ID
- AA11889471
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- ISSN
- 21897891
- 13449915
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- NDL BIB ID
- 5987100
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed