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札幌市手稲区前田の上部更新統~完新統のAMS14C年代測定と花粉分析
https://doi.org/10.18999/nagubc.3.31
https://doi.org/10.18999/nagubc.3.3103f2a2bd-9609-486a-bd1b-9ea66bb6342c
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2019-05-17 | |||||
タイトル | ||||||
タイトル | 札幌市手稲区前田の上部更新統~完新統のAMS14C年代測定と花粉分析 | |||||
言語 | ja | |||||
その他のタイトル | ||||||
その他のタイトル | AMS14C dating and pollen analysis of Upper Pleistocene to Holocene sediments cored at Maeda Forest Park in Teine-ku, Sapporo, Japan | |||||
言語 | en | |||||
著者 |
星野, フサ
× 星野, フサ× 岡, 孝雄× 中村, 俊夫× 赤松, 周平× 近藤, 務× 米道, 博× 関根, 達夫× 山崎, 芳樹× 若松, 幹男× Hoshino, Fusa× Oka, Takao× Nakamura, Toshio× Akamatu, Syuhei× Kondo, Tsutomu× Yonemichi, Hiroshi× Sekine, Tatsuo× Yamazaki, Yoshiki× Wakamatsu, Mikio |
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アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Teine-ku | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | AMS14C dating | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | pollen analysis | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Younger Dryas | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | MIS 3 | |||||
抄録 | ||||||
内容記述 | To investigate vegetational change in Upper Pleistocene to Holocene temporal range, lithological analysis, AMS 14C-dating and pollen analysis are conducted for the two cores (SMF-1 and SMF-2) drilled at the southeast side of Maeda Forest Park in the northern part of Teine-ku, Sapporo City, Hokkaido, Japan. The distance between the two cores is only 15 m and core lengths are about 41-44 m. The facies of the upper and lower sediments change clearly at the depth of 28 m. The upper section from the ground level to 28.0 m of the SMF-1 core (44.45 m in length) is an alluvial bed (Chuseki-so) consists of main sandy layer and lower muddy layer. AMS 14C age of 10,800-10,400 cal.yBP (91.7%) was obtained for a peat sample collected at 26.55 m in depth from the basal part of the lower muddy part. A pollen analysis suggests that the layer from 26.55 to 28.0 m belongs to a cool zone (SMF1-D) rich in Picea, and can be assigned as the Younger Dryas period. The lower section from 28.0 m to 36.05 m is considered as the stratum MIS 3 in Late Pleistocene, because 14C age of 43,300-42,400 cal.yBP (95.4%) is obtained for a peat sample collected at 31.5 m in this section. This is consistent with vegetational zoning based on pollen and spore (SMF1-A, B and C zones). It is also evident that the stratum of Last Glacial Maximum (MIS 2) is missing in SMF1 core that should be at above 28.0 m in depth if it exists. | |||||
言語 | en | |||||
内容記述タイプ | Abstract | |||||
抄録 | ||||||
内容記述 | 札幌市手稲区北部の前田森林公園南東側で掘削されたSMF-1孔(標高5.5m),SMF-2(標高5.61m)のコアを利用してコア層相解析,AMS14C年代測定および花粉分析による研究を行った.両孔は約15mの間隔で近接しているが,両孔では深度28m(標高-22.5m)付近を境にして,沖積層とその下位の地層に分けられ,下位の地層は上部更新統で,上部層は小野幌層,下部はもみじ台層に対比できる.2つのコアの花粉分帯は統合的にとらえると,下位よりSMF1-A帯(SMF2-A帯),SMF1-B帯(SMF2-B帯),SMF1-C帯(SMF2-C帯+SMF2-D帯),SMF1-D帯およびSMF1-E帯(SMF2-E帯)に区分できる.これらのうち,沖積層の最下部を占めるSMF1-D帯はSFM-1孔の深度26.55mで10,800-10,400cal.yBP(91.7%)のAMS14C年代値が得られており,その下位に当たることから,ヤンガードリアス期の可能性がある.下位の地層のうち,SMF1-B帯+SMF1-C帯(SMF2-B帯+SMF2-C帯+SMF2-D帯)は深度31.50mで43,300-42,400cal.yBPのAMS14C年代値が得られており最終氷期MIS3と見なされる.沖積層と下位層の間は顕著な不整合で,最終氷期最寒冷期(MIS2)は欠如していることが明らかである. | |||||
言語 | ja | |||||
内容記述タイプ | Abstract | |||||
出版者 | ||||||
言語 | ja | |||||
出版者 | 名古屋大学宇宙地球環境研究所 | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/nagubc.3.31 | |||||
ID登録タイプ | JaLC | |||||
書誌情報 |
ja : 名古屋大学年代測定研究 巻 3, p. 31-40, 発行日 2019-03 |
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著者版フラグ | ||||||
値 | publisher |