大地构造与成矿学
大地構造與成礦學
대지구조여성광학
GETECTONICA ET METALLOGENIA
2009年
4期
556-566
,共11页
走滑构造%成矿作用%控矿作用%铅锌矿%广东凡口
走滑構造%成礦作用%控礦作用%鉛鋅礦%廣東凡口
주활구조%성광작용%공광작용%연자광%엄동범구
strike-slip structure%metallogenesis%ore-controlling factor%Fankou lead-zinc deposit
广东凡口铅锌矿富存于粤北曲仁盆地北缘中、上泥盆统碳酸盐岩石中,是吴川-四会钨、锡、铅、锌多金属成矿带的重要代表性矿床之一.矿区内发育一系列与矿床形成及改造有关的NE向、NNE或NW向走滑构造.其中印支期NE向左行走滑构造是重要的成矿期构造;矿体的空间产出状态和富集程度主要受NE向走滑构造控制,但同时受燕山期与喜山期等成矿期后NNE向和NW向右行走滑伸展构造的改造和影响.矿区NE向走滑构造带的演化与发展及其相伴的岩浆等热液活动是该大型矿床形成的重要制约因素.
廣東凡口鉛鋅礦富存于粵北麯仁盆地北緣中、上泥盆統碳痠鹽巖石中,是吳川-四會鎢、錫、鉛、鋅多金屬成礦帶的重要代錶性礦床之一.礦區內髮育一繫列與礦床形成及改造有關的NE嚮、NNE或NW嚮走滑構造.其中印支期NE嚮左行走滑構造是重要的成礦期構造;礦體的空間產齣狀態和富集程度主要受NE嚮走滑構造控製,但同時受燕山期與喜山期等成礦期後NNE嚮和NW嚮右行走滑伸展構造的改造和影響.礦區NE嚮走滑構造帶的縯化與髮展及其相伴的巖漿等熱液活動是該大型礦床形成的重要製約因素.
엄동범구연자광부존우월북곡인분지북연중、상니분통탄산염암석중,시오천-사회오、석、연、자다금속성광대적중요대표성광상지일.광구내발육일계렬여광상형성급개조유관적NE향、NNE혹NW향주활구조.기중인지기NE향좌행주활구조시중요적성광기구조;광체적공간산출상태화부집정도주요수NE향주활구조공제,단동시수연산기여희산기등성광기후NNE향화NW향우행주활신전구조적개조화영향.광구NE향주활구조대적연화여발전급기상반적암장등열액활동시해대형광상형성적중요제약인소.
The Fankou Pb-Zn deposit occurs in the Middle and Upper Devonian carbonate rocks in the northern margin of the Quren basin in Guangdong Province and is one of the representative deposits of the EW-trending Nan-ling W-Sn-Bi-Mo-Cu-Pb-Zn polymetallic metallogenic belt. A series of NE-, NNE- and NW-trending strike-slip structures related to the ore formation and rebuilding well develop in the ore district. To be more precise, The Indosinian NE-trending left-lateral strike-slip and Yanshanian NNE-trending structures are the dominant ones during metallogenic stage of the ore district. The spatial occurrence state and enrichment degree of the orebodies are subject to alteration and influence of post-metallogenic NNE-, NW-trending right-lateral strike-slip extensional structures. The evolution and development of the NE-trending strike-slip structure belt, accompanied by magmatic hydrothermalism, is the key restrictive factor that controls the ore formation of such a large-scale deposit.