Wugong Mountain is located in the central and western parts of Jiangxi Province, China, and in the northern branch of Luo Xiao Mountains. The mountain is northeast-southwest, spanning Luxi County, Pingxiang City, Jiangxi Province, Anfu County, Ji 'an City and Yuanzhou District, Yichun City. Its main vein stretches 120 km, with a total area of about 970 square kilometers.
geologic feature
About 800-570 million years ago, due to the collision between the Yangtze block and the Cathaysian block, Wugong Mountain was in a deep-sea and sub-deep-sea environment, and a set of siliceous iron sand mudstone was deposited on the continental margin, and the sedimentary rocks formed were buried deep underground. Under the combined action of high temperature and high pressure, the rocks have undergone strong deformation and metamorphism, forming the Sinian Lechangxia Group.
In the early Paleozoic, 570-500 million years ago, due to the rising of the earth's crust, the sea water was relatively shallow and there were many underwater uplifts, which were characterized by the deposition of terrigenous debris in the basin, forming the sandy argillaceous metamorphic rocks of the Cambrian Bacun Group. 5000 ~ 4 10/00000 years ago, due to Caledonian tectonic movement, the fold of the ancient basin was closed, and the water surface in Wugongshan area rose and entered the stage of weathering and denudation.
At the same time, the South China continent was pushed northward by the South China Sea block, the Yangtze plate was pushed southward by the North China block, and the Yangtze plate collided with the South China plate, butting and splicing along the Pingxiang-Guangfeng ancient suture line through the fault zone, forming a unified South China block.
On the south side of the docking zone, the Neoproterozoic basement folds in Wugongshan area, accompanied by a large amount of granite magma intrusion, resulted in low greenschist facies regional metamorphism in the whole area, which led to the contact metamorphism of low amphibolite in a certain range at the edge of the rock mass, forming a deformation-metamorphism-magma zone.