摘要
区内发育有东西向、南北向两类韧性剪切带,前者为韧性平移剪切带,后者为韧性逆冲剪切带,它们分别形成于早、中元古代末。南北向韧性剪切带是区内金矿的主要控矿构造,控制了区域的矿化分带及矿田、矿床、矿体的分布。金矿主要形成在地洼期,与叠加在早期韧性剪切带上的脆-韧性变形作用有关。
There are two types of ductile shear zone in the field, E-W shear strike-slip zone and N-S overthrust shear zone. They were formed at the end of the early and middle Protcrozoic respectively. N-S ductile shear zones are main structures controlling gold deposits in the area. They controlled the regional mineralization zoning and the distribution of orefields, mineral deposits and orebodies. Gold deposits were formed mainly in the period of diwa, related to the brittle-ductile deformation superimposed on the early ductile shear zones.
出处
《大地构造与成矿学》
EI
CAS
CSCD
1991年第3期177-186,共10页
Geotectonica et Metallogenia
关键词
金矿
控矿构造
韧性剪切带
矿化
ductile shear zone, strain analysis, orc-controlling structure, northern Jianghuan area, Anhui, China.
