Deep Structural Characteristics and Prospecting Potential of Huayangchuan Uranium Deposit Based on Geophysical Field
-
摘要:
华阳川铀多金属矿的勘查工作近年来取得了较大进展,基本查明了浅部矿体的分布情况。然而,由于北秦岭华阳川地区深部构造发育,地形复杂,前期缺乏对深部构造特征的研究,制约了该区深部找矿突破。笔者通过航空重、磁及地面电磁剖面工作,结合已有的地质资料,对华阳川铀多金属矿区的深部构造特征进行了全面分析。研究结果显示,华阳川韧性剪切带的深部延伸为铀源的迁移和迁出提供了重要的通道。同时,华山岩体具有铀源迁出特征,其在华阳川矿区北界面变缓,呈现出“靠椅”状的形态,这种地质结构有利于铀源的富集和就位。基于以上,认为华阳川铀矿区深部至少1 500 m内仍具有寻找铀矿的巨大潜力。
Abstract:In recent years, significant progress has been achieved in the exploration of Huayangchuan uranium polymetallic ore, and the distribution of shallow ore bodies has been mainly identified. However, the deep tectonic development and complex terrain of the Huayangchuan area in the North Qinling Mountains, as well as a lack of early research on the characteristics of the deep tectonics, have restricted the deep prospecting breakthrough in this area. Based on available geological data, a comprehensive analysis has been conducted on the deep structural characteristics of the Huayangchuan uranium polymetallic mining area. The study reveals that the deep extension of the Huayangchuan ductile shear zone provides crucial pathways for the migration and emplacement of uranium sources. Furthermore, the contact of the Huashan rock body on the northern side of the mining area exhibits a gentle gradient, forming a "chair-like" morphology, which favors the enrichment of uranium sources. Based on these findings, it is believed that there is significant potential for uranium ore exploration within at least 1,500 meters of depth in the Huayangchuan uranium mining area.
-
-
表 1 地层、岩体密度及磁化率统计表
Table 1. Statistical table of formation, rock mass density and susceptibility
期次 代号 岩 性 块数 密度
(g/cm3)密度均值
(g/cm3)磁化率
(10−5 SI)磁化率
均值
(10−5 SI)地段密度
均值
(g/cm3)燕山期 KX 中细粒含斑黑云二长花岗岩 31 2.51~2.61 2.56 128~740 500 老牛山
2.58KS 细粒含斑黑云二长花岗岩 18 2.60~2.71 2.65 162~4380 1584 KH 中粒含斑黑云二长花岗岩 32 2.50~2.68 2.57 11~1728 458 KD 中粗粒含斑黑云二长花岗岩 18 2.58~2.70 2.63 740~4333 1 974 KY 中粒黑云二长花岗岩 38 2.52~2.63 2.56 525~1388 960 华山
2.61KC 细粒黑云二长花岗岩 31 2.51~2.70 2.62 41~1438 719 JM 细粒角闪黑云二长花岗岩 31 2.55~2.66 2.61 512~1095 791 中元古期 Pt2G 细粒二长花岗岩 47 2.53~2.67 2.60 237~1855 1 115 塬头
2.60太古期 Ar2D 花岗片麻岩 157 2.58~2.86 2.68 16~881 386 华阳川韧性剪切带
2.65Ar2H 黑云角闪斜长片麻岩 46 2.60~2.70 2.65 13~518 162 Ar2W 辉石角闪片麻岩 74 2.54~2.66 2.62 219~1660 1 171 蓟县系 Jxl 浅灰色白云岩 32 2.81~2.87 2.83 1~3 2 桃园以南 长城系 Chch 泥质板岩、石英砂岩 63 2.60~2.91 2.74 1~5 3 Chb4 灰白色石英砂岩 185 2.36~2.80 2.59 1~11 4 Chl1 墨绿色细碧岩 101 2.82~2.91 2.85 351~7915 5 467 Chd 石英角斑岩(含黄铁、辉钼矿) 63 2.59~2.94 2.72 2~510 100 金堆矿区 太华群 Ar2th 黑云斜长片麻岩、混合岩 2.68 1460 -
[1] 高成, 康清清, 张熊猫, 等. 华阳川碳酸岩的岩石学特征及铀矿赋存状态[J]. 陕西地质, 2015, 33(2)10-13.
GAO Cheng, KANG Qing-qing, ZHANG Xiong-mao, et al. Uranium Occurrences And Carbonatite Petrology In Huayangchuan [J]. Geology Of Shaanxi, 2015, 33(2)10-13.
[2] 高成, 康清清, 江宏君, 等. 秦岭造山带发现新型铀多金属矿: 华阳川与伟晶岩脉和碳酸岩脉有关的超大型铀-铌-铅-稀土矿床[J]. 地球化学, 2017, 46(5): 446-455 doi: 10.3969/j.issn.0379-1726.2017.05.004
GAO Cheng, KANG Qing-qing, JIANG Hong-jun, et al. A Unique Uranium Polymetallic Deposit Discovered In The Qinling Orogenic Belt: The Huayangchuan Super-Large U-Nb-Pb-REE Deposit Associated With Pegmatites And Carbonatites[J]. Geochimica, 2017, 46(5): 446-455. doi: 10.3969/j.issn.0379-1726.2017.05.004
[3] 耿涛, 郭培虹, 冯治汉, 赵廷严, 杜辉, 刘生荣. 北秦岭华阳川地区复杂地形条件下隐伏硬岩型铀矿的地球物理勘查方法[J]. 西北地质, 2023, 56(2): 225-244 doi: 10.12401/j.nwg.2022048
GENG Tao, GUO Peihong, FENG Zhihan, ZHAO Tingyan, DU Hui, LIU Shengrong. Geophysical Exploration Eethod of Concealed Hard Rock Type Uranium Deposit with Complex Topographic Conditions in Huayangchuan Area, North Qinling Mountains[J]. NORTHWESTERN GEOLOGY, 2023, 56(2): 225-244. doi: 10.12401/j.nwg.2022048
[4] 郭培虹, 冯治汉, 王万银, 等. 北秦岭华阳川地区重磁三维反演及岩浆岩特征研究[J]. 物探与化探, 2021, 45(5): 1217-1225
GUO Pei-hong, FENG Zhi-han, Wang Wan-yin, et al. Three-dimensional gravity and magnetic inversion of magmatic rocks in the Huayangchuan, North Qinling area[J]. Geophysical & Geochemical Exploration, 2021, 45(5): 1217-1225.
[5] 郭威, 周鼎武, 任军锋, 等. 陕西小秦岭华阳川韧性剪切带的特征及其区域构造意义[J]. 地质通报, 2008. 27(6): 823-828.
GUO Wei, ZHOU Dingwu , REN Junfeng,et al. Char acter istics of the Huayangchuan ductile shear zones in the Xiaoqinling Mountains, Shaanxi, China, and its r egional tectonic significance. Geological Bulletin of China, 2008, 27(6): 823- 828
[6] 郝书东, 王先超, 杜文龙, 等. AMT法指导铜矿深部勘查的可行性[J]. 西北地质, 2016.49(4): 165-171 doi: 10.3969/j.issn.1009-6248.2016.04.007
HAO Shu-dong, WANG Xian-chao, DU Wen-long, et al. Feasibility Analysis of Audio magnetotelluric Method for Guiding the Copper Prospecting in Depth[J], NORTHWESTERN GEOLOGY, 2016.49(4): 165-171. doi: 10.3969/j.issn.1009-6248.2016.04.007
[7] 惠小朝, 蔡煜琦, 何升, 等. 陕西省华阳川铀铌铅矿床碳酸岩岩石学及地球化学特征[J]. 现代地质, 2017, 31(2): 246-257 doi: 10.3969/j.issn.1000-8527.2017.02.004
HUI Xiaochao, CAI Yuqi, HE Sheng, et al. Petrologic and geochemical characteristics of carbonatites in Huayangchuan U-Nb-Pb deposit, Shaanxi Province[J]. Geoscince, 2017, 31(2): 246-257(in Chinese). doi: 10.3969/j.issn.1000-8527.2017.02.004
[8] 惠小朝, 何升. 华阳川铀多金属矿床碳酸岩脉矿化特征[J]. 铀矿地质, 2016.32(2): 93-98
HUI Xiaochao, HE Sheng. Mineralization Characteristic of Carbonatite Veins in Huayangchuan U-polymetal Deposit, Shanxi Province[J]. Uranium Geology, 32(2): 93-98.
[9] 惠小朝, 李子颖, 冯张生, 等. 陕西华阳川铀多金属矿床铀赋存状态研究[J]. 矿物学报, 2014, 34(04): 573-580 doi: 10.16461/j.cnki.1000-4734.2014.04.018
HUI Xiao-chao, LI Zi-ying, FENG Zhang-sheng, et al. Research On The Occurrence State Of U In The Huayangchuan U-Polymetallic Deposit, Shaanxi Province [J]. Acta Mieralogica Sinica, 2014, 34(04): 573-580. doi: 10.16461/j.cnki.1000-4734.2014.04.018
[10] 李波, 王朋, 冉军林, 等. 2022. AMT在陕西华阳川地区硬岩型铀矿勘查中的应用[J]. 高校地质学报, 28(3): 451-456
LI Bo, WANG Peng, RAN Junlin, et al. An Audio-Frequency Magnetotellurics (AMT) Investigation of Hard Rock-Hosted Uranium Deposit in Huayangchuan Area, Shaanxi Province[J]. Geological Journal of China Universities, 2022, 28(3): 451-456.
[11] 李普涛, 辜平阳, 何世平, 等. 小秦岭华阳川地区铀矿综合找矿方法研究[J]. 西北地质, 2023, 56(2): 245−259.
LI Putao, GU Pingyang, HE Shiping, et al. Study on Exploration Methods Combination for Uranium Deposit in the Periphery of Huayangchuan Area, Xiaoqinling Mountains[J]. Northwestern Geology, 2023, 56(2): 245−259.
[12] 王洪作, 吴俊奇, 陈培荣, 等. 大桥坞产铀火山—侵入杂岩的岩浆混合作用及其对赣杭构造带铀成矿潜力的指示意义[J]. 高校地质学报, 2016, 22(1): 30-42
WANG Hongzuo, WU Junqi, CHEN Peirong, et al. Uranium-bearing Volcanic-intrusive Complexes in the Daqiaowu: Magma Mixing and Implications for Uranium Metallogenic Potential in the Gan-Hang Tectonic Belt[J]. 2016. Geological Journal of China Universities, 22(1): 30-42.
[13] 徐贵来, 王华林, 赵瑞全, 等. 铀资源勘查物化探方法最新进展及发展趋势[J]. 铀矿地质, 2013, 29(6): 344-351. doi: 10.3969/j.issn.1000-0658.2013.06.004
XU Gui-lai, WANG Hua-lin, ZHAO Rui-quan, et al. Latest Adavance And Developing Trend Of Geophysical And Geochemical Methods And Techniques Applied In Uranium Resources Exploration [J]. Uranium Geology, 2013, 29(6): 344-351. doi: 10.3969/j.issn.1000-0658.2013.06.004
[14] 杨海, 赵廷严, 李诗珺, 等. 2019. 秦岭华阳川地区航空伽马能谱异常特征及铀找矿方向[J]. 中国地质, 46(3): 651-661
YANG Hai, ZHAO Tingyan, LI Shijun, et al. Anomaly characteristics of airborne gamma-ray spectrometric survey and uranium prospecting direction in Huayangchuan, Qinling[J]. Geology in China, 2019, 46(3): 651-661.
[15] 喻学惠. 陕西华阳川碳酸岩地质学和岩石学特征及其成因初探[J]. 地球科学-中国地质大学学报, 1992.17(2): 156-157
YU Xue-hui. Geological and petrological characteristics and genesis of carbonate rocks in Huayangchuan, Shaanxi Province[J]. Earth Sciences - Journal of China University of Geosciences, 1992.17(2): 156-157(in Chinese).
[16] 张熊猫, 陈冰, 陈军等. 北秦岭华阳川地区铀矿物质来源[J]. 地质通报, 2023, 42(3): 1671–1684
ZHANG Xiongmao, CHEN Bing, CHEN Jun, et al. Source of uraniumminerals in Huayangchuan area of North Qinling[J]. Geological Bulletin of China, 2023, 42(3): 1671–1684.
[17] 赵廷严, 杨海, 贾志业, 等. 航空物探指导华阳川地区铀矿找矿工作取得突破[J]. 地质论评, 2020, 66(1): 132-134 doi: 10.16509/j.georeview.2020.s1.051
ZHAO Ting-yan, YANG Hai, JIA Zhi-ye, et al. A breakthrough in Uranium prospecting achieved by an airborne geophysical survey in Huayangchuan[J]. Geological Review, 2020, 66(1): 132-134. doi: 10.16509/j.georeview.2020.s1.051
[18] 周乾, 许强平, 何金华, 等. 综合物探方法在山北地区花岗岩型铀矿勘查中的应用研究[J]. 地球物理学进展, 2019, 34(5): 1980-1987 doi: 10.6038/pg2019CC0415
ZHOU Qian, XU Qiang-ping, HE Jin-hua, et al. Application Research Of Integrated Geophysical Method To Granite Type Uranium Exploration In Shanbei Region [J]. Progress In Geophysics, 2019, 34(5): 1980-1987. doi: 10.6038/pg2019CC0415
-