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Stratigraphy of Holocene Tephras on Adak Island in the West-Central Aleutian Islands, Alaska
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- OKUNO Mitsuru
- Fukuoka Univ.
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- WADA Keiji
- Hokkaido Univ. Education
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- GUALTIERI Lyn
- Seattle Univ.
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- Sarata Brenn
- Fugro Eng.
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- TORII Masayuki
- Kumamoto Gakuen Univ.
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- NAKAMURA Toshio
- Nagoya Univ.
Bibliographic Information
- Other Title
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- アリューシャン列島西中部,アダック島の完新世テフラ層序
Description
Adak Island, Alaska is covered with Holocene sequences of soil-tephra complexes. Black (1976) thought that the three conspicuous tephra deposits (Main, Intermediate and Sandwich) erupted from Kanaga volcano. Waythomas et al. (2001) inferred that a possible source volcano of the tephras was Mount Moffett, Adak Island. The three tephra layers increase in thickness from south to north. Thickness and maximum diameter of lithic fragments (ML) suggests that their source was Adagdak volcano or a now submerged volcano nearby. Eruptions of the Intermediate, Sandwich, YBO and Forty Year tephra deposits were dated to approximately 7.2, 4.7, 3.6 and 0.4 cal kBP, respectively.
Journal
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- Proceedings of the General Meeting of the Association of Japanese Geographers
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Proceedings of the General Meeting of the Association of Japanese Geographers 2012s (0), 100139-, 2012
The Association of Japanese Geographers
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Details 詳細情報について
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- CRID
- 1390282680673406592
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- NII Article ID
- 130005457047
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- Data Source
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- JaLC
- CiNii Articles
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- Abstract License Flag
- Disallowed