摘要
该项工作利用美国一、二号陆地卫星MSS数字化磁带经I^2S_101图象处理系统作多种功能数字图象处理的卫星影象图进行地质解译。通过解译,区内共划分出18条线性构造密集带和8个环块构造发育区;4个I级、5个II级、6个Ⅲ级影象地质单元。铅锌矿化富集地段是在南北向线性构造密集带与东西向线性构造的交汇部位,若有北北东-南南西向线性构造复合,则可出现矿床。环形构造就发育在这些构造交汇部位。金顶特大型铅锌矿床即赋存在大环套小环,小环又叠置连生的环形构造发育部位。根据卫星影象解译所获得的地质信息,结合已知的铅锌成矿规律,进行了成矿远景预测区的圈定,共圈出A类3个、B类2个、C类13个。在A类预测区金顶铅锌矿床的外围,发现2个富银多金属含矿带,结合地表矿化,指出3个普查评价靶区。
According to the satellite images which utilized the MSS digitized tape of U.S. No.l, No.2 landcast and passed through polyfunctional digital image processing in the light of the image processing system of I^2 S 101, a geolo-gical interpretation has been conducted. Through the interpretation, the au-thors divided the region into 18 concentrated belts of linear structure and eight areas of circular, massive structures together with four first-order, five second-order and six third-order image geological units. Mineralization enri-ched in the convergence positions of the dense belts of N-S direction linear structure with E-W direction linear structures and ore deposits appeared if the compounding of linear structures running NNE-SSW took place. These structural convergence positions are where the circular structures developed. The Jinding superduty-scala ore deposit occurs where the circular structures composed of the big ring linked with small rings and of mutual superimposi-tion, intergrowth of the small rings exist. Based on the geological informa-tion from satellite image interpretation, integrated with the known metallo-genic regularity for Pb-Zn ore, the predition areas of metallogenic prospect of 3 class A, 2 class B and 13 class C have been delineated. Two ore-bearing belts of Ag-rich polymetal have been found in the periphery of Jinding Pb-Zn deposit within class A prediction area and the authors have pointed out three target areas for search for mineral deposits combined with, the surfase mineralizations.
出处
《云南地质》
1991年第2期207-229,共23页
Yunnan Geology
