anhydrock

The shallow polyhalite potash deposit in Sichuan are distributed in the north plunge top of Huayingshan anticline where is anhydrock of earlier Mesozoic Triassic period.

四川卤石钾矿布于华蓥山背斜北倾没端下中三叠统之硬石膏岩中。

1. the backbone fault of the nappe tectonic was not “F.2”, but within the anhydrite member underlaid the nappe, and the anhydrock was an ideal lubricating layer;

推覆构造的主干不是F_2,而是在推覆体之下的硬石膏段中,硬石膏岩是理想的润滑;