Eustatic and regional tectonic controls on late Pleistocene paleovalley morphology in the central Kanto Plain, Japan

Eustatic and regional tectonic controls on late Pleistocene paleovalley morphology in the central Kanto Plain, Japan
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日本关东平原中部的海平面上升和区域构造对晚更新世古谷地貌的控制

DOI:
10.1016/j.quaint.2017.06.029
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发表时间:
2017
影响因子:
2.2
通讯作者:
T. Sugai
T. Sugai
中科院分区:
地球科学3区
文献类型:
--
作者:
T. Ishihara;T. Sugai

文献摘要

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利用沉积岩芯和钻孔资料,分析了日本关东平原中部三个晚更新世埋藏古河谷的形态。古荒川谷和古中川谷合并形成古东京谷,延伸到东京湾。虽然末次冰期海平面下降控制了这些古河谷的形成,但这些古河谷中河流阶地的发育程度不同,反映了构造活动的区域差异。东京低地下的古东京谷和荒川低地下的古荒川谷处于相对稳定或隆起的区域,两个古谷都有几个不同的河流阶地,形成阶梯状的横截面剖面。相反,在沉降的Menuma低地下的古中川和古荒川河谷,阶地表面不明显,从谷缘到谷轴有一个平滑的梯度。因此,关东平原中部古河谷的结构可以用海平面下降和同期区域构造运动的结合来解释。
This study analyzed the morphology of three late Pleistocene buried paleovalleys in the central Kanto Plain, Japan, by using data from sedimentary cores and boreholes. The paleo-Arakawa valley and the paleo-Nakagawa valley merge to form the paleo-Tokyo valley, which extends into Tokyo Bay. Although the last glacial sea-level fall controlled the formation of these paleovalleys, fluvial terraces developed differently in these paleovalleys, reflecting regional differences in tectonic activity. The paleo-Tokyo valley beneath the Tokyo Lowland, and the paleo-Arakawa valley beneath the Arakawa Lowland, are in relatively stable or uplifting regions, and both paleovalleys have several distinct fluvial terraces forming stepped cross-sectional profiles. In contrast, in the paleo-Nakagawa and the paleo-Arakawa valleys beneath the subsiding Menuma Lowland, terrace surfaces are obscure and there is a smooth gradient from the valley margins to the valley axis. The structure of the paleovalleys in the central Kanto Plain can thus be explained by the combination of eustatic sea-level fall and concurrent regional tectonic movement.
武藏野高原新地形分类
DOI: --
发表时间: 2019
期刊: 第四紀研究
影响因子: --
作者:
Kentaro MINAMI;Akira SATO,Kazuhiko NINOMIYA,M.Kenya KUBO,Dai TOMONO and Yoshitaka KAWASHIMA;遠藤邦彦・千葉達朗・杉中佑輔・須貝俊彦・鈴木毅彦・上杉 陽・石綿しげ子・中山俊雄・舟津太郎・大里重人・鈴木正章・野口真利江・佐藤明夫・近藤玲介・堀伸三郎
通讯作者: 遠藤邦彦・千葉達朗・杉中佑輔・須貝俊彦・鈴木毅彦・上杉 陽・石綿しげ子・中山俊雄・舟津太郎・大里重人・鈴木正章・野口真利江・佐藤明夫・近藤玲介・堀伸三郎
DOI: 10.1016/j.sedgeo.2005.12.004
发表时间: 2006-05-15
影响因子: 2.8
作者:
Tanabe, Susumu;Saito, Yoshiki;Kitamura, Akihisa
通讯作者: Kitamura, Akihisa