摘要
石灰沟剪切带是东昆仑中带多条北西向区域韧性剪切带之一。规模宏伟、切割深度较大、多期活动和控岩控矿作用明显,并在区域构造分区中起着重要作用。该剪切带主期变形发生于海西期,变形环境相当于中一深构造层次,其表现NW向左行逆冲位移。在印支期又经历了右行脆性复活。这些均揭示了东昆仑中带海西—印支期具北西向构造的发育历史,同时亦说明了该类韧性剪切带在区域地质构造及矿产研究中具有重要意义。
Shihuigou shear zone is one of the NW trend regional ductile shear zones in the middle zone of East Kunlun. It is a large shear zone with deep dissection, multiple action, clear control for mineralization and rock, and played an important role in regional tectonism. The main deformation of the shear zone was took place in the middle-deep structural level in the Hercynian cycle, and shown as a NW trend sinistral thrust displacement. It underwent again a dextral brittle activation in Indosinian cycle. All above mentioned indicate that the NW trend structures of the middle zone of East Kunlun in the Hercynian-Indosinian were devoloped over long periods, the doctile shear zone is very important to study the regional tectonics and mineral resources.
