溧水盆地火山岩区地震波场特征及控矿因素定位预测  

Sesmic wave field feature in Lisui basin volcanic terrain and location forecasting of ore-controlling factors

作　　者：王小江[1,2] 张保卫[2] 刘建勋[2] 柴铭涛[2] 张凯[2] 李培[2] 王凯[2] 

机构地区：[1]成都理工大学地球科学学院,成都610059 [2]中国地质科学院地球物理地球化学勘查研究所,廊坊065000

出　　处：《物探化探计算技术》2014年第2期207-214,共8页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国土资源部公益性行业科研专项(201111018);地质大调查项目(1212010916029)

摘　　要：江苏溧水盆在晚中生代活化为地洼,受燕山期岩浆作用的影响形成火山盆地。本区的矿床严格受火山旋回、构造控制。地震勘探资料显示:不同地质体的地震波场特征各具特点,测区盆地构造清晰,火山岩系总厚约3 700m,火山旋回界面明显,前火山岩沉积地层中断裂发育,次火山岩体分布于盆地边缘隆起带。按成矿构造法观点,结合本区成矿背景、相关矿床类型和MT剖面异常分析,对盆地相关控矿因素进行了定位预测。Lishui basin of Jiangsu activated to be a diwa in the latter stage of Mesozoic era, and was formated as a volcanic basin under control of magmatism in Yanshan period. The forming of mineral deposit is strictly controlled by volcanic cycles and tec tonic, Seismic exploration data reveals that seismic wave field feature of different geological bodies has its salient features. Ba sin tectonic and interface of volcanic cycles are distinct and the thickness of volcanic series is about 3700 meters. The faults in fore-volcanic-sedimentary formation are development sub-volcanic rocks distribute in the uplift of basin margin. According to the view of metallotectonics, combined to the metallogenic background of the survey area, related deposit types in this region and anomaly of MT section, related ore controlling factors were prospected.

关 键 词：溧水盆地 地震波场 火山旋回 地震勘探 控矿因素 

分 类 号：P631.4[天文地球—地质矿产勘探]