豫西熊耳山两河口勘查区土壤地球化学勘查及找矿预测

发布时间：2018-05-09 09:25

本文选题：豫西 + 两河口　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：通过对两河口勘查区的野外地质调查和对收集资料的整理,根据勘查区地质基本情况总结和3条地质剖面土壤剖面的研究,对1:5000土壤地球化学数据统计计算和分析,分析计算出两河口勘查区各元素的富集系数和异常下限,做出单元素地球化学图、地球化学异常图等一系列图件,确定勘查区的元素组合异常,做出元素组合异常图、找矿预测图,对勘查区各元素进行潜力论证分析,根据预测结果,提出了找矿靶区。主要取得以下的认识:(1)勘查区内地质情况比较简单,勘查区主要出露大部分为中粗粒二长花岗岩,东北部为燕山晚期岩浆侵入形成的细粒正长花岗岩体及其岩脉,南部和北部有燕山晚期岩浆侵入的花岗斑岩脉,燕山晚期的岩浆活动可能是引起成矿的主要因素。(2)与中国的土壤元素平均含量相对比,两河口勘查区内的W、Sn、Mo、Pb、Zn等5个元素发生了富集,富集系数分别为2.03、2.62、3.09、2.30、1.57。另外Au、Ag、As三项元素未达到中国土壤元素的平均含量。(3)通过对土壤地球化学数据统计分析,对W、Mo、Sn、Cu、Pb、Zn、Au、Ag、As等9项元素进行相关分析确定本区的找矿元素组合为○1 W-Sn-Mo主要是燕山晚期岩浆第二次侵入到中粗粒二长花岗岩时在高温下所形成的;○2Pb-Zn-Ag主要是在燕山晚期岩浆第二次以及第三次侵入时,在中温情况下所形成的。(4)根据元素组合成矿以及成矿的规模、强度、面积等圈出勘查区主要的两个找矿靶区:Y1预测区,位于勘查区中部即赵沟的东北部一带,主要找矿矿种为Pb、Zn、W、Mo、Sn;Y2预测区,位于勘查区南部即沙梨树一带,主要的找矿矿种为Pb、Zn、Ag。综上所述,勘查区具有一定的成矿能力,下一步应该继续加大对勘查区的研究工作。
[Abstract]:Based on the field geological survey and data collection in the Liangkou estuary exploration area, according to the summary of the basic geological conditions of the exploration area and the study of three soil sections of geological sections, the soil geochemical data of 1: 5000 are calculated and analyzed statistically. The enrichment coefficient and anomaly lower limit of each element in the exploration area of the two estuaries are analyzed and calculated. A series of maps such as single element geochemical map, geochemical anomaly map and so on are made to determine the element combination anomaly and to make the element combination anomaly map. On the basis of the prospecting prediction map, the potential of each element in the exploration area is demonstrated and analyzed. According to the prediction results, the ore-prospecting target area is put forward. The main results are as follows: (1) the geological conditions in the exploration area are relatively simple. The main outcrops in the exploration area are mainly medium-coarse monzogranites, and the northeast is a fine-grained syenite body and its veins formed by late Yanshanian magma intrusion. There are granitic porphyry veins intruded by late Yanshanian magma in the south and north. The magmatic activity in the late Yanshanian period may be the main factor causing mineralization. In the Liangkou estuarine exploration area, five elements, such as Zn and Zn, have been enriched, and the enrichment coefficients are 2.03 ~ 2.62 ~ 3.09 ~ 2.30 ~ 1.57 ~ 1.57, respectively. In addition, the three elements of Au-Ag-As do not reach the average content of soil elements in China.) based on the statistical analysis of soil geochemistry data, Based on the correlation analysis of 9 elements, such as W-Sn-Mo, the association of ore-prospecting elements in this area is mainly formed at high temperature when the late Yanshanian magma intruded into the medium-coarse granites for the second time. 02Pb-Zn-Ag is mainly formed during the second and third intrusions of late Yanshanian magma at moderate temperature. According to the element assemblage and the scale, intensity and area of ore-forming, two main ore-prospecting target areas in the exploration area, the ore-prospecting target area, are divided into two prediction areas, namely, the ore-prospecting target area: Y1, according to the size, strength and area of the element assemblage. It is located in the middle of the exploration area, which is the northeast of Zhaogou. The main ore prospecting type is the prediction area of PbZZZZWNZHENGSUN Y2, and the southern part of the exploration area is the area of Shalishu. The main ore prospecting species is PbZZN Ag. To sum up, the exploration area has certain ore-forming ability, the next step should continue to strengthen the research work of the exploration area.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P632.1

【相似文献】