Strike-slip relay ramps
Strike-slip relay ramps
复制标题
走滑中继坡道
DOI：
10.1016/0191-8141(95)97303-w
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发表时间：
1995
影响因子：
3.1
通讯作者：
D. Sanderson
中科院分区：
文献类型：
--
作者：
D. Peacock;D. Sanderson
在走滑断层之间的收缩超越处的重新定向的层理区域在这里被称为走滑中继斜坡。米尺度的例子描述了在东Quantoxhead，萨默塞特英国的侏罗纪沉积。较大的走滑接力斜坡出现在巴西东北部的Rio de Peixe盆地、沿着纽波特-英格尔伍德趋势、加州和英格兰西南部的Bovey盆地。虽然走滑中继斜坡的几何形状和发展与正断层系统中的中继斜坡相似，但在容纳跨断层之间位移转移的结构上存在差异。而走滑中继斜坡是典型的扭压，压力解决方案经常发生，中继斜坡在正常的断层系统是由伸展或扭张为主。在解释超覆断层之间的重定向层理区域时，尤其是在位移方向未知时，例如在使用地震数据时，需要注意。这是因为走滑断层带和正断层带都可能发生中继斜坡。
Areas of reorientated bedding at contractional oversteps between strike-slip faults are here called strike-slip relay ramps. Metre-scale examples are described from the Jurassic sediments at East Quantoxhead, Somerset U.K. Larger strike-slip relay ramps occur in the Rio de Peixe Basin, NE Brazil, along the Newport-Inglewood Trend, California, and in the Bovey Basin, SW England. Although the geometry and development of strike-slip relay ramps are similar to those of relay ramps in normal fault systems, there are differences in the structures which accommodate the transfer of displacement between the overstepping faults. Whereas strike-slip relay ramps are typically transpressional, with pressure solution often occurring, relay ramps in normal fault systems are dominated by extension or transtension. Care needs to be taken when interpreting areas of reorientated bedding between overstepping faults, particularly when displacement directions are unknown, for example when using seismic data. This is because relay ramps can occur in both strike-slip and normal fault zones.