北衙深部找矿靶区

在三维空间中综合已揭露浅部地质和深部地球物理资料进行深部预测，既能深化浅部认识，还能减少地球物理多解性带来的困扰，成为深部成矿预测的新趋势和重要手段. 以北衙金矿床万硐山矿段为例，通过收集钻孔、勘探线剖面、化探和地球物理等资料，在三维建模平台中建立了万硐山矿段三维地质模型；基于建模结果，综合地表、浅部和深部重力资料，对成矿地质条件和深部成矿潜力进行了研究和分析，筛选出隐伏断裂、斑岩体和青天堡组砂岩3 种成矿有利要素，对应建立了成矿有利区三维体模型（sgrid）. 在此基础上，采取多源信息综合方法，对3 种成矿控制要素的有利成矿区域取交集，圈定了万硐山矿段海拔1 100~900 m 内深部靶区，为周边同类型矿段深部靶区预测提供了参考.

Integrating exposed shallow geological and deep geophysical data for deep prediction in three-dimensional (3D) space not only deepens the understanding of shallow geology but also mitigates the non-uniqueness issues associated with geophysical interpretations, emerging as a new trend and critical approach for deep metallogenic prognosis. Taking the Wandongshan ore block of the Beiya Gold Deposit as a case study, this work collected data including drill cores, exploration line sections, geochemical exploration surveys, and geophysical datasets, and constructed a 3D geological model of the Wandongshan ore block on a 3D modeling platform. Based on the modeling outcomes, this study comprehensively utilized surface, shallow, and deep gravity data to investigate and analyze the metallogenic geological conditions and deep metallogenic potential of the area. Three favorable metallogenic factors were screened, including buried faults, porphyry bodies, and sandstones of the Qingtianbao Formation, and corresponding 3D volumetric models of favorable metallogenic zones (sgrid) were established accordingly. Furthermore, adopting a multi-source information integration method, the favorable metallogenic zones corresponding to the three metallogenic controlling factors were intersected, and deep prospecting targets within the altitude range of 1100–900 m of the Wandongshan ore block were delineated. This research provides a valuable reference for deep prospecting target prediction of similar ore blocks in the surrounding area.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于北衙金矿床万硐山矿段的深部找矿靶区预测，通过三维建模和综合地质、地球物理资料，筛选出成矿有利要素并圈定深部靶区。数据集以PDF格式存储，共享方式为开放获取，数据大小为2.23 MB，覆盖时间范围为2018-07-01至2021-08-15。