A Method of Detecting Tectonic Tilting Events from Geologic Records of Coastal Alluvial Fans
A Method of Detecting Tectonic Tilting Events from Geologic Records of Coastal Alluvial Fans
复制标题
滨海冲积扇地质记录探测构造倾斜事件的方法
DOI：
10.1086/629341
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
T. Muto
中科院分区：
文献类型：
--
作者：
T. Muto
随着相对海平面的每一次降低，与高坡度海底斜坡相邻的沿海冲积扇系统的“扇谷”在沿海斜坡最陡的地方变得根深蒂固或继续加深。因此，通过记录扇谷沉积物位置和/或趋势的时间变化，可以在地质记录中识别改变扇系统最大坡度方向的构造倾斜事件。这种方法检测古代扇谷的趋势，从而倾斜事件，说明与第四纪扇在日本本州中部的太平洋沿岸。
With each lowering of relative sea level, "fan valleys" of coastal alluvial fan systems adjacent to high-gradient submarine slopes become entrenched or resume deepening at sites where the coastal slope is steepest. Tectonic tilting events that changed the maximum slope direction in a fan system should thus be identifiable in the geologic record by noting temporal changes in position and/or trend of fan valley deposits. This method of detecting ancient fan valley trends, and thus tilting events, is illustrated with Quaternary fans on the Pacific coast of central Honshu, Japan.