Crustal structure and origin of the northeast Japan arc
Crustal structure and origin of the northeast Japan arc
复制标题
地壳结构与日本东北弧的起源
DOI：
10.1111/j.1440-1738.1992.tb00053.x
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发表时间：
1992
期刊：
影响因子：
1.5
通讯作者：
A. Hasegawa
中科院分区：
文献类型：
--
作者：
K. Minoura;A. Hasegawa
日本东北部是一个典型的岛弧区，其地形配置反映了岛弧系统的地球物理特征。然而，由于早期构造上多次叠加断层和褶皱，弧的构造样式十分复杂多变。
晚侏罗世至早白垩世东亚地区发生了一系列构造事件，这些事件可能是由增生和碰撞构造所引起的，这些事件涉及岛弧地壳基本框架的建立。在晚第三纪早期，由于板块碰撞和大洋板块运动的变化，地壳发生破碎和位移，导致日本海的开放。随着岛弧的发育，大量的火山-沉积岩将前第三系基底的倾斜断块掩埋。
Northeast Japan is a typical island arc region and its topographic arrangement reflects the geophysical characteristics of the island arc system. However, the structural style of the arc is very complicated and varied due to the repeated superposing of faults and folds on to earlier structures.
Geotectonic events that involved creation of the fundamental framework of the island arc crust occurred in east Asia in the Late Jurassic to Early Cretaceous and were probably induced by accretion and collision tectonics. The fragmentation and subsequent displacement of the crust took place during the Early Neogene in response to the terrane collision and the change in oceanic plate motion, leading to the opening of the Japan Sea. Huge amounts of volcano-sedimentary rocks buried the tilted fault blocks of pre-Tertiary basement with the development of the island arc.