江西北部大湖塘钨矿田成矿预测研究
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摘要
大湖塘矿田位于江西北部九岭钨多金属成矿带中部,面积约200 km~2。本文以地质、物探、化探、遥感等地质找矿标志作为预测因子,运用综合找矿信息量、特征分析等数理统计方法进行成矿有利信息量、特征变量计算,认为石英脉(带)及燕山花岗岩是找矿的重要标志。利用MAPGIS平台,对网格单元找矿总信息量及关联度等值线进行了二次圈连。共圈定找矿可行地段2个,通过野外地质调查及钻孔验证,取得较好地质找矿效果,说明该预测方法对找矿具有一定的参考和指导意义。
With a size of 200-odd square kilometers, Dahutang ore field is situated in the middle section of Jiuling tungsten polymetallic metallogenic belt. Using the various geological prospecting signs, including geology,geophysical prospecting, geochemical exploration and remote sensing, as prediction factors, we suggest that quartz veins(belt) and Yanshan granite are important signs of prospecting by applying mathematical statistics. MAPGIS platform is utilized to perform the secondary circle on the grid unit prospecting information and correlation degree contour. Two feasible prospecting plot was determined. Field geological survey and drilling verification proved that the forecasting method has certain reference and guidance significance to tungsten prospecting.
With a size of 200-odd square kilometers, Dahutang ore field is situated in the middle section of Jiuling tungsten polymetallic metallogenic belt. Using the various geological prospecting signs, including geology,geophysical prospecting, geochemical exploration and remote sensing, as prediction factors, we suggest that quartz veins(belt) and Yanshan granite are important signs of prospecting by applying mathematical statistics. MAPGIS platform is utilized to perform the secondary circle on the grid unit prospecting information and correlation degree contour. Two feasible prospecting plot was determined. Field geological survey and drilling verification proved that the forecasting method has certain reference and guidance significance to tungsten prospecting.
引文
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[2]曹钟清,占岗乐,周贤旭.大湖塘地区深边部找矿实践与启示[C].江西地学新进展,南昌:江西科技出版社,2011:65-69.
[3]左全狮,张中山,周欣.江西大湖塘矿田地质特征、控矿因素及找矿前景分析[J].矿产勘查,2015,6(1):25-32.
[4]江西省武宁县大湖塘南区钨矿资源储量核实报告[R].九江:江西巨通实业有限公司,2011.
[5]左全狮,程雯娟.赣北大湖塘矿田特大型钨矿床成矿地质条件及成矿模式探讨[J].矿产与地质,2015,29(2):137-143.ZUO Quanshi,CHENG Wenjuan.Metallogenic conditions and metallogenic model of super-large tungsten deposits in Dahutang ore field of northern Jiangxi[J].Mineral Resources and Geology,2015,29(2):137-143.
[6]游远航,杨建中,胡明,等.找矿信息量法在成矿预测中的应用——以武当西缘铅锌铜矿预测为例[J].地质找矿论丛,2006,21(1):58-62.YOU Yuanhang,YANG Jianzhong,HU Ming,et al.Application of prospecting-information contents method for minerogenetic prediction:a case study on prediction of lead-zinc-copper deposit in western wudang area[J].Contributions to Geology and Mineral Resources Research,2006,21(1):58-62.
[7]赵鹏大,陈永清.基于地质异常单元金矿找矿有利地段圈定与评价[J].地球科学-中国地质大学学报,1999(5):443-448.ZHAO Pengda,CHEN Yongqing.Geological anomaly unit-based delineation and assessment of preferable gold ore-finding area[J].Earth Science-Journal of China University of Geoscience,1999(5):443-448.
[8]王世称,王於天,成秋明.综合信息矿产资源定量评价[M].北京:武汉地质科技管理干部学院,1987:179-180.