Distribution of detrital minerals and sediment color in western Arctic Ocean and northern Bering Sea sediments: Changes in the provenance of western Arctic Ocean sediments since the last glacial period

Kobayashi, Daisuke; Yamamoto, Masanobu; Irino, Tomohisa; Nam, Seung-Il; Park, Yu-Hyeon; Harada, Naomi; Nagashima, Kana; Chikita, Kazuhisa; Saitoh, Sei-Ichi

Distribution of detrital minerals and sediment color in western Arctic Ocean and northern Bering Sea sediments: Changes in the provenance of western Arctic Ocean sediments since the last glacial period

Kobayashi, Daisuke; Yamamoto, Masanobu; Irino, Tomohisa et al.

Polar Science, 2016, 10(4), 519-531

Permalink : https://hdl.handle.net/2115/72245

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アクセス権	open access
URI	https://hdl.handle.net/2115/72245
タイトル	Distribution of detrital minerals and sediment color in western Arctic Ocean and northern Bering Sea sediments: Changes in the provenance of western Arctic Ocean sediments since the last glacial period
著者	Kobayashi, Daisuke ; Yamamoto, Masanobu ; Irino, Tomohisa ; Nam, Seung-Il ; Park, Yu-Hyeon ; Harada, Naomi ; Nagashima, Kana ; Chikita, Kazuhisa ; Saitoh, Sei-Ichi
著者名 Kobayashi, Daisuke
e-Rad_Researcher 60332475 著者名 Yamamoto, Masanobu
e-Rad_Researcher 70332476 著者名 Irino, Tomohisa
著者名 Nam, Seung-Il
著者名 Park, Yu-Hyeon
e-Rad_Researcher 70344281 著者名 Harada, Naomi
著者名 Nagashima, Kana
著者名 Chikita, Kazuhisa
e-Rad_Researcher 70250503 著者名 Saitoh, Sei-Ichi
言語	英語
キーワード	Western Arctic Ocean
	Chukchi Sea
	Beaufort Gyre
	Transpolar drift
	Bering strait inflow
	Mineral
発行日	2016-12
出版者	Elsevier
収録物名	Polar Science
巻(号)	10(4)
ページ	519-531
抄録	This paper describes the distribution of detrital minerals and sediment color in the surface sediments of the western Arctic Ocean and the northern Bering Sea and investigates the relationship between mineral composition and sediment provenance. This relationship was used to determine the provenance of western Arctic Ocean sediments deposited during the last glacial period. Sediment color is governed by water depth, diagenesis, and mineral composition. An a-b diagram was used to trace color change during diagenesis in the Arctic Ocean sediments. The mineral composition of surface sediments is governed by grain size and provenance. The feldspar/quartz ratio of the sediments studied was higher on the Siberian side than on the North American side of the western Arctic Ocean. The (chlorite broken vertical bar kaolinite)/illite and chlorite/illite ratios were high in the Bering Sea but decrease northwards in the Chukchi Sea. Thus, these ratios are useful for provenance studies in the Chukchi Sea area as indices of the Beaufort Gyre circulation and the Bering Strait inflow. The sediments deposited during the last glacial period have a lower feldspar/quartz ratio and a higher dolomite intensity than Holocene sediments on the Chukchi Plateau, suggesting a greater contribution of North American grains during the last glacial period. (C) 2016 Elsevier B.V. and NIPR. All rights reserved.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2016, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	1873-9652
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.polar.2016.07.005