中国地质调查局: 山东省东里幅(J50E024018)、韩旺幅(I50E001018) 1∶50 000水系沉积物测量原始数据集

东里、韩旺地区位于山东临沂市沂水县，位于华北地台成矿区之郯庐断裂(沂沭段)成矿区。依据2016年度山东省级地质勘查项目“山东省1∶50 000东里幅(J50E024018)、韩旺幅(I50E001018)区域矿产地质调查”，完成了该2个图幅的水系沉积物测量工作。数据集汇集了东里幅、韩旺幅共2个图幅1∶50 000水系沉积物测量18种元素(W、Sn、Mo、Bi、Cu、Pb、Zn、Au、Ag、As、Sb、Hg、V、Cr、Co、Ni、Ti、Mn)的分析测试数据，共包含数据点<number>3 335</number>个，测试数据<number>60 030</number>个，第一次建立了调查区1∶<number>50 000</number>的地球化学数据库。在此基础上，编制了59张各类地球化学系列图件(包含综合异常图1张、单元素地球化学图36张、组合异常图4张、单元素异常图18张)，并建立了空间数据库。通过本数据集在区内共圈定各类单元素异常302处，综合异常21处(甲类异常1处、乙类异常8处、丙类异常12处)；经异常查证，其中矿致异常为13处。经过后期矿产综合检查，共划定找矿预测区4处(A类1处、B类1处、C类2处)；优选金、多金属找矿靶区2处(B类1处、C类1处)；新发现金矿点4处，其中1号矿点矿体由1个探槽共4个样品控制，矿体厚度2.1 m，Au品位0.13×10^-6～89.66×10^-6，平均22.88 ×10^-6。

The Dongli and Hanwang areas are located in Yishui County, Linyi City, Shandong Province, within the metallogenic province of the Tan-Lu Fault Zone (Yishu Segment) in the North China Platform Metallogenic Province. Based on the 2016 Shandong Provincial Geological Exploration Project "Regional Mineral Geological Survey of 1:50 000 Dongli Sheet (J50E024018) and Hanwang Sheet (I50E001018) in Shandong Province", the stream sediment survey for these two sheets was completed. This dataset compiles the analytical test data of 18 elements (W, Sn, Mo, Bi, Cu, Pb, Zn, Au, Ag, As, Sb, Hg, V, Cr, Co, Ni, Ti, Mn) from the 1:50 000 stream sediment survey of the two sheets (Dongli and Hanwang). It contains <number>3 335</number> data points and <number>60 030</number> test data entries, and for the first time establishes a 1:<number>50 000</number> geochemical database for the survey area. On this basis, 59 various geochemical series maps were compiled (including 1 comprehensive anomaly map, 36 single-element geochemical maps, 4 composite anomaly maps, and 18 single-element anomaly maps), and a spatial database was established. Using this dataset, a total of 302 single-element anomalies and 21 comprehensive anomalies (1 Class A, 8 Class B, and 12 Class C) were delineated in the area; after anomaly verification, 13 of them are ore-related anomalies. After subsequent comprehensive mineral inspection, 4 prospecting prediction areas were delineated (1 Class A, 1 Class B, and 2 Class C); 2 gold and polymetallic prospecting target areas were optimized (1 Class B and 1 Class C); and 4 new gold ore occurrences were discovered. Among them, the ore body of Occurrence No.1 is controlled by 4 samples from 1 trench, with an ore body thickness of 2.1 m, Au grade ranging from 0.13×10^-6 to 89.66×10^-6, and an average of 22.88×10^-6.