著者
佐藤 裕司 居平 昌士 松田 功 熊野 茂
出版者
日本珪藻学会
雑誌
Diatom (ISSN:09119310)
巻号頁・発行日
vol.13, pp.193-199, 1997

Diatom assemblages in sediments were analyzed to clarify sedimentary environments during the mid- to late-Holocene and to determine the upper limit of marine facies at the Mokoto site along the Okhotsk Sea in Hokkaido.<BR>There was a replacement of marine and brackish-water diatoms by freshwater ones at +1.80 m altitude. Marine and brackish-water diatoms occurred over 40 % at the horizons below +1.80 m altitude, where a marine diatom <I>Cocconeis scutellum</I> and brackish-water diatoms <I>Bacillaria paradoxa, Navicula peregrina</I> and <I>Synedra tabulata</I> occurred. This indicates that sedimentation took place under a lagoon-like environment. Peat accumulation and the dominance of freshwater epiphytic diatoms indicate peat moor environments at the horizons above +1.80 m altitude. At about 5,500 yrs BP, the Mokoto site changed from lagoon littoral to peat moor conditions. Based on the diatom assemblages in sediments, the upper limit of marine facies can be regarded to be +1.80 m altitude, indicating the mid-Holocene sea-level high stand at the Mokoto site.

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こんな論文どうですか? 珪藻遺骸群集からからみた北海道オホーツク海沿岸藻琴における 完新世中期~後期の堆積環境(佐藤 裕司ほか),1997 https://t.co/1x554DHKEL Diatom assemblages in sediment…
こんな論文どうですか? 珪藻遺骸群集からからみた北海道オホーツク海沿岸藻琴における 完新世中期~後期の堆積環境(佐藤 裕司ほか),1997 https://t.co/kC4d21c0Bc
こんな論文どうですか? 珪藻遺骸群集からからみた北海道オホーツク海沿岸藻琴における 完新世中期~後期の堆積環境(佐藤 裕司ほか),1997 https://t.co/kC4d21c0Bc
こんな論文どうですか? Diatom assemblages and sedimentary environments during the mid- to late-Holocene(佐藤 裕司ほか),1997 … http://t.co/kC4d21u9Pk
こんな論文どうですか? Diatom assemblages and sedimentary environments during the mid- to late-Holocene(佐藤 裕司ほか),1997 http://t.co/HA5v3qNOIc

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