CAJ | 학술논문

张家口南部燕山台褶带内中—新元古代碳酸盐岩地层分布广泛，岩性以白云岩为主。该时代地层中分布有梁家沟、银洞沟、常庄子等铅锌银多金属矿床(点)分布。文章以赤城县梁家沟-火石沟铅锌银多金属矿区为例，采用统计法和局部奇异性两种方法圈定了成矿元素1∶20万水系沉积物异常，结果显示化探元素异常区内包含3条断裂，根据矿床为后生成因推测异常区成矿潜力较大。在此基础上，结合控矿因素对找矿靶区范围进行了1∶5万水系沉积物加密采样，共圈出3处异常。通过对比分析，已知矿体与较弱的3号异常相吻合，而异常面积较大、强度较高的1、2号化探异常目前无工业矿体发现，应为今后找矿的重点区域。野外对1、2号异常区进行了基岩原生晕地球化学剖面测量，显示在异常中心区域白云岩中成矿元素铅锌银含量高，进一步佐证了上述异常区域的找矿潜力。
장가구남부연산태습대내중—신원고대탄산염암지층분포엄범，암성이백운암위주。해시대지층중분포유량가구、은동구、상장자등연자은다금속광상(점)분포。문장이적성현량가구-화석구연자은다금속광구위례，채용통계법화국부기이성량충방법권정료성광원소1∶20만수계침적물이상，결과현시화탐원소이상구내포함3조단렬，근거광상위후생성인추측이상구성광잠력교대。재차기출상，결합공광인소대조광파구범위진행료1∶5만수계침적물가밀채양，공권출3처이상。통과대비분석，이지광체여교약적3호이상상문합，이이상면적교대、강도교고적1、2호화탐이상목전무공업광체발현，응위금후조광적중점구역。야외대1、2호이상구진행료기암원생훈지구화학부면측량，현시재이상중심구역백운암중성광원소연자은함량고，진일보좌증료상술이상구역적조광잠력。
Carbonate rocks of Meso-Proterozoic and Neo-Proterozoic period are widely distributed along Yanshan fold belt in southern Zhangjiakou and are composed mainly of dolomite. Some polymetallic mineral deposits (ore spots) , such as LaingJiagou, Yingdonggou and Changzhuangzi, are distributed in strata. With the Liangjiagou deposit as a study object, the authors used statistical method and local singularity means to analyze the data of stream sediments (1∶200000) so as to delineate geochemical anomalies. The results show that the areas of geochemical anomalies include three major faults, where there is great potential in search for polymetallic orebodies according to the epigenetic genesis of the ore deposits. The authors adopted densed sampling in important potential areas and delineated three geochemical anomalies. A comprehensive analysis shows that No. 3 anomaly is relatively weak and is consistent with the orebody. No. 1 and No. 2 anomalies not only have high intensity but also possess fairly large areas. The primary halos of bedrock profile survey show that the content of Pb, Zn and Ag in dolomite is significantly higher that in the center of the anomaly area, and this provides further evidence for the prospecting potential of the anomaly area.