地质与勘探2018，Vol.54Issue(2)：230-242,13.
河南省崤山金多金属矿集区控矿构造分析与思考
The Metamorphic Core Complex in the Xiaoshan Gold-Polymetallic Concentrating Area of Henan Province and Its Implications for Mineral Exploration
摘要
Abstract
Located in Sanmenxia city,Henan Province,the Xiaoshan gold-polymetallic concentrating area is underlain by a typical metamorphic core complex (MCC), and an important part of basins and ranges of western Henan. Good geological conditions of mineralization is present this region,where geochemical anomalies of Au and related elements are widely distributed in mineralized altered-rocks and auriferous quartz veins,both are hosted within shear zones or fractures of varying sizes and orientations. Several small- to medium-sized gold-polymetallic ore deposits, as well as numerous clustered occurrences, have been found in recent years.Although the Xiaoshan district has traditionally been deemed as an excellent geological endowment area with great potential in finding large-sized deposits,no significant discovery is made to date. Based on our comprehensive studies on regional metallogenic set-ting and ore-governing factors, it is considered that the Xiaoshan terrane should have a comparable resource potential to the adjacent Xiaoqinling and Xiong'ershan,both host tremendous gold-polymetallic deposits,since they have identical or similar metallogenic settings and geologic evolution. Never-theless,there are sufficient geological evidence indicating that the exhumation and tectonic un-roofing of the Xiaoshan MCC terrane was much less than those of Xiaoqinling and Xiong'ershan terranes, implying mineral potential beneath the Xiaoshan region existing at considerable depths, which conse-quently hinters prospecting efforts. In order to realize ore-finding breakthrough in this area,the following geological and geophysical approaches are sug-gested:1) increasing exploration depths for more than 1500 m from surface in the region;2) adopting the most effective,appropriate deeply-penetrating geophysical methodologies with high precision and their combinations to figure out favorable targets with potential gold-polymetallic mineralization;and 3) carrying out detailed studies on ore-controlling structures and regional metallogeny to better understand the mineralizing processes, hydrothermal fluid pathways and ore localizations.By applying geophysical grid surveys over carefully-selected prospective areas combined with appropriate geologic-geophys-ical profiling for cross-testing and correlation,the sizes,orientations and spatial distributions of the ore-hosting ductile-brittle shear zones can be effec-tively delineated,and finally the preferential targets under cover will be sorted out for further drill-tests and ensued geological exploration.关键词
崤山/变质核杂岩/金-多金属矿/控矿构造/深部探查/河南省Key words
Xiaoshan/MCC/gold-polymetallic mineralization/ore-control structures/deep exploration/Henan Province分类
天文与地球科学引用本文复制引用
刘红涛,底青云,薛国强,罗小南,丁云河,王春永..河南省崤山金多金属矿集区控矿构造分析与思考[J].地质与勘探,2018,54(2):230-242,13.基金项目
国家自然科学基金(编号:41474095)和国家重大科研装备研制项目"深部资源探测核心装备研发"(编号:ZDYZ2012-1-05)联合资助. （编号:41474095）
