Foreland Basins at the Miocene Arc-Arc Junction, Central Hokkaido, Northern Japan
Foreland Basins at the Miocene Arc-Arc Junction, Central Hokkaido, Northern Japan
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日本北部北海道中部中新世弧-弧交界处的前陆盆地
DOI：
10.5772/56748
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Gentaro Kawakami
中科院分区：
文献类型：
--
作者：
Gentaro Kawakami
中新世期间，由于弧-弧碰撞事件，在日本北方岛屿北海道形成了一系列前陆盆地[2-4]。盆地区域总长度为400公里，其特征是南北方向延伸的几排深洼地，并被地形高点隔开（图1）。碰撞事件导致的地壳缩短和折返的程度在碰撞带南部区域较大[5]，因此，盆地几何形状和盆地充填的地层/沉积学结构在凹陷之间变化。也就是说，南部地区的坳陷由于逆冲扩张而经历了递进变形，沉积中心向前陆迁移，这是许多前陆盆地都注意到的特征[1]。而北方凹陷则表现为限制性变形和沉积中心的前陆迁移。因此，即使在盆地的近缘，盆地充填物的初始几何形状和地层结构也保存完好。另一方面，与北方和南方地区不同的是，位于前陆盆地区中心附近的坳陷受到前陆岩石圈凸起存在的影响。因此，该凹陷显示出非常狭窄的盆地几何形状和沉积中心向前陆迁移的限制。
During the Miocene age, a series of foreland basins were formed in Hokkaido, the northern island of Japan, due to an arc-arc collision event [2–4]. The basin area has a total length of 400 km, and it is characterized by several rows of deep depressions stretched in a north-south direction and separated by topographic highs (Figure 1). The degree of total crustal shortening and exhumation by the collision event is larger in the southern region of the collision zone [5], and thus, the basin geometry and the stratigraphic/sedimentologic architecture of the basin fills vary among the depressions. Namely, the depression in the southern region has suffered progressive deformation due to thrust propagation, and the depocenter has migrated forelandward, a feature noted in many foreland basins [1]. In contrast, the depression in the northern region shows restrictive deformation and foreland-ward migration of depocenter. Thus, the initial geometry and stratigraphic architecture of the basin fill are well preserved even in the proximal margin of the basin. On the other hand, unlike the northern and southern regions, the depression located near the center of the foreland basin area has been affected by the existence of a projection on the foreland lithosphere. As a result, the depression shows very narrow basin geometry and restrictive foreland-ward migration of the depocenter.
日本北海道日高山脉的隆升历史
DOI：
--
发表时间：
2006
期刊：
A thermochronologic view. Jour. Geol. Soc. Japan. (refereed journal) 112
影响因子：
--
作者：
Kawakami;G.;Ohira;H.;Arita;K.;Itaya;T.;Kawamura;N
通讯作者：
N
北海道中部中新世欧亚-鄂霍次克板块边界碰撞造山带的早期折返和前深盆地的同时充填
DOI：
--
发表时间：
2004
期刊：
Island Arc 13
影响因子：
--
作者：
Kawakami;G.
通讯作者：
G.