Discovery of skarn iron-rich deposit based on gravity and magnetic data in the Qihe-Yucheng, Shandong Province: Enlightenment to prospecting of the superdeep coverage area
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摘要:
研究目的 山东齐河—禹城矿集区内分布近南北向且具有一定同源特征的重磁异常带，前期陆续在北部李屯、南部大张重磁异常内揭露到厚大的矽卡岩型富铁矿床，铁矿勘查工作取得较大进展，但矿集区中部潘店异常区被超深的新生界覆盖，异常规模小、强度弱，深部铁矿体的地球物理信息被极大弱化，且矿致磁异常又一定程度被大规模的磁性岩体异常所掩盖，识别和提取难度较大，因此一直未取得找矿突破。
研究方法 本文充分结合相邻矿区重磁勘查的成功找矿经验，由已知到未知，对潘店重磁异常进行平面剖析和剖面定量反演，实现了研究区构造格架划分、成矿地质体圈定、异常剖析研究及2.5D联合反演的全流程解译。
研究结果 基于高精度重磁资料的综合研究，获取了超深覆盖层下的深部找矿信息，最终在齐河—禹城矿集区中部实现了矽卡岩型富铁矿的找矿新突破，使矿集区内3处重磁异常得以紧密关联，并证实了大张、潘店、李屯三处铁矿床处于同一近南北向的中性岩浆岩带内，开辟了齐河—禹城矿集区内又一处重要的找矿新空间。
结论 本次找矿成果为后续进一步开展超深覆盖层下的深部找矿工作提供了重要参考和指示，同时表明齐河—禹城矿集区内具有广阔的矽卡岩型富铁矿找矿前景。
Abstract:This paper is the result of mineral exploration engineering.
Objective A nearly N-S trending gravity and magnetic anomaly zone with certain homologous characteristics was identified in the Qihe-Yuchen ore concentration area, Shandong Province. In the early stage, thick skarn iron-rich deposits were successively revealed in the northern Litun and southern Dazhang gravity and magnetic anomalies, and great progress has been made in iron ore exploration. However, the Pandian anomaly area, the central part of the ore concentration area is covered by ultra deep Cenozoic, with small scale and weak intensity, while the geophysical information of deep iron ore body is greatly weakened, and the ore-induced magnetic anomaly is covered by the large-scale magnetic anomaly of diorite to a certain extent, which makes it difficult to identify and extract. Therefore, no prospecting breakthrough has been made in-the Pandian anomaly.
Methods This article fully combines the successful prospecting experience of gravity and magnetic exploration in adjacent mining areas. From known to unknown, the plane analysis and profile quantitative inversion of Pandian gravity and magnetic anomalies were carried out, and the whole process interpretation of structural framework division, delineation of metallogenic geological body, anomaly analysis and 2.5D joint inversion is realized in the study area.
Results Based on comprehensive study of high-pricision gravity and magnetic data, the deep prospecting information under the ultra deep overburden is obtained, -and finally achieved a new prospecting breakthrough of skarn type rich iron ore in the central part of Qihe-Yucheng ore concentration area.-The three gravity and magnetic anomalies in the ore concentration area are closely related, which proves that the three iron deposits of Dazhang, Pandian and Litun are in the same nearly north-south neutral magmatic rock belt, opening up another important new prospecting space in the Qihe-Yucheng ore concentration area.
Conclusions The prospecting results provide important reference and instructions for further deep prospecting under ultra deep overburden. At the same time, it shows that there is a broad prospecting prospect for skarn iron-rich ore in Qihe-Yucheng ore concentration area.
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Cao Xinzhi, Zhang Wangsheng, Sun Huashan. 2009. Progress in the study of deep exploration in China[J]. Geologoical Sciences and Technology Information, 28(2): 104-109(in Chinese with English abstract).
Chen Xiaoman, Wang Juan, Wang Jiguo, Zhai Dongliang, Cai Tu. 2017. Geological characteristics and propecting potential of Dazhang iron deposit in Qihe County of Shandong Province[J]. Shandong Land and Resources, 33(12): 24-29(in Chinese with English abstract).
Ding Wenxiang, Yuan Feng, Li Xiaohui, Sun Weian, Liu Guangxian, Yang Di. 2018. Deep geological structure analysis and metallogenic prediction of Zhonggu ore field in the south section of Ningwu Basin based on gravity and magnetic joint inversion[J]. Acta Geologica Sinica, 92(11): 2301-2317 (in Chinese with English abstract). doi: 10.3969/j.issn.0001-5717.2018.11.007
Fan Wenxin, Li Guangming, Jiao Yanjie, Liang Shengxian. 2019. Enlightenment of the characteristics of gravity and magnetic field on the tectonic framework and metallogenesis of the Zhaxikang ore-concentrating area, Tibet[J]. Journal of Jilin University (Earth Science Edition), 49(6): 1741-1754(in Chinese with English abstract).
Fan Zhengguo, Huang Xuzhao, Xiong Shengqing. 2010. Technical Requirements in Magnetic Application[M]. Beijing: Geological Publishing House (in Chinese).
Gross L. 2019. Weighted cross-gradient function for joint inversion with the application to regional 3-D gravity and magnetic anomalies[J]. Narnia, 217(3): 2035-2046.
Hao Xingzhong, Yang Yiheng, Li Yingping, Gao Huali, Chen Lei. 2019. Ore-controlling characteristics and prospecting criteria of iron deposits in Qihe area of Western Shandong[J]. Journal of Jilin University(Earth Science Edition), 49(4): 982-991(in Chinese with English abstract).
Hao Xingzhong, Zheng Jinming, Liu Wei, Wang Runsheng, Zhang Guili. 2020. Metallogenic prognosis of skarn-type iron ore deposits in Qihe-Yucheng area, Shandong Province[J]. Acta Geoscientica Sinica, 41(2): 293-302(in Chinese with English abstract).
Li Changbo, Wang Liangshu, Sun Bin, Feng Runhai, Wu Yongjing. 2015. Interpretations of gravity and magnetic anomalies in the Songliao Basin with wavelet multi-scale decomposition[J]. Frontiers of Earth Science, 9(3): 427-436. doi: 10.1007/s11707-014-0458-3
Li Weilin, Li Jun, Wang Xuben. 2020. Deep crustal structure imaging of gravity and magnetic anomalies in the Xisha Trough, China[J]. Arabian Journal of Geosciences, 13(6): 359-383.
Liu Guangding, Hao Tianyao. 1995. Searching of hidden mineral deposits by geophysical methods[J]. Chinese Journal of Geophysics, 38(6): 850-854(in Chinese with English abstract). doi: 10.3321/j.issn:0001-5733.1995.06.018
Meng Guixiang, Lü Qingtian, Yan Jiayong, Deng Zhen, Qi Guang, Xue Ronghui. 2019. The research and application of explorational technology of "Penetrating" to geology and mineral investigation in overburden area[J]. Acta Geoscientica Sinica, 40(5): 637-650(in Chinese with English abstract).
Mikołajczak M, Barmuta J, Ponikowska M, Mazur S, Starzec K. 2021. Depth-to-basement study for the western Polish Outer Carpathians from three-dimensional joint inversion of gravity and magnetic data[J]. Journal of Geosciences, 66(1): 15-36.
Misael León-Sánchez A, Gallardo L A, Ley-Cooper A Y. 2018. Two dimensional cross-gradient joint inversion of gravity and magnetic data sets constrained by airborne electromagnetic resistivity in the Capricorn Orogen, western Australia[J]. Exploration Geophysics, 49(6): 940-951. doi: 10.1071/EG16069
Mondal S, Guha A, Pal S K, Porwal A, Snehamoy Chatterjee, Komal Rani, Amin Beiranvand Pour, K. Vinod Kumar. 2021. Conjugate utilization of Landsat-8 OLI, ground gravity and magnetic data for targeting mafic cumulates within anorthositic-layered complex of Sittampundi, India[J]. Geocarto International, 36(16): 1855-1872. doi: 10.1080/10106049.2019.1669726
Sismanto S, Uji Y, Fitri J. 2018. Interpretation of the gravity and magnetic anomalies of the geothermal subsurface structure area in Pamancalan, Lebak, Banten, West Java, Indonesia[J]. Arabian Journal of Geosciences, 11(14): 1-16.
Song Mingchun, Song Yingxin, Ding Zhengjiang, Wei Xufeng, Sun Shaoli, Song Guozheng, Zhang Junjin, Zhang Pijian, Wang Yongguo. 2019. The discovery of the Jiaojia and the Sanshandao giant gold deposits in Jiaodong Peninsula and discussion on the relevant issues[J]. Geotectonica et Metallogenia, 43(1): 92-110(in Chinese with English abstract).
Sun Zhongyu, Liu Zhan, Yang Bo, Zhang Wang, Zhang Yong, Meng Xiangjun. 2018. Discussion on the eastern and western boundary of Haiyang depression and eastern boundary of Jiaolai Basin[J]. Progress in Geophysics, 33(5): 2166-2171(in Chinese with English abstract).
Tao Long, Zhang Shasha, Lan Xueyi, Tang Zhengjiang, An Ming, Yan Jiayong, Wang Yunyun, Guo Dong, Ye Lin, Hong Dajun. 2019. Application of 1: 50000 gravity and magnetic exploration for mineral prospect in heavily covered area in Xuancheng, Anhui Province[J]. Geology in China, 46(4): 894-905(in Chinese with English abstract).
Tavakoli M, Kalateh A N, Rezaie M, Gross L, Fedi M. 2021. Sequential joint inversion of gravity and magnetic data via the cross-gradient constraint[J]. Geophysical Prospecting, 69(7): 1542-1559. doi: 10.1111/1365-2478.13120
Tian Hongjun, Yin Wenbin, Liu Guangdi, Jiang Yongfang, You Wenbing. 2020. The application and evaluation of the wide field electromagnetic method in the low resistance coverage area: Exemplified by Zhongmu area of Henan Province[J]. Geophysical and Geochemical Exploration, 44(5): 1025-1030(in Chinese with English abstract).
Wang Saixin, Yan Tingjie, Zuo Huancheng. 2017. Effects of high-precision magnetic survey exploring vanadic titanomagnetite in peripheral Panzhihua area[J]. Geological Science and Technology Information, 36(3): 255-261(in Chinese with English abstract).
Wu Chengping, Yu Changchun, Wang weiping, Ma Xunbiao, Fan Zhengguo, Zhu Hongwei. 2019. Physical characteristics of rocks and ores and their application in Qihe area, Western Shandong[J]. Advances in Earth Science, 34(10): 1099-1107(in Chinese with English abstract). doi: 10.11867/j.issn.1001-8166.2019.10.1099
Yadav P K, Adhikari P K, Srivastava S, Maurya V P, Tripathi A, Singh S, Singh R K, Bage A K. 2018. Lithologic boundaries from gravity and magnetic anomalies over Proterozoic Dalma volcanics[J]. Journal of Earth System Science, 127(2): 1-9.
Yan Jiayong, Lü Qingtian, Qi Guang, Fu Guangming, Zhang Kun, Lan Xueyi, Guo Xin, Wei Jin, Luo Fan, Wang Hao, Wang Xu. 2020. A 3D geological model constrained by gravity and magnetic inversion and its exploration implications for the world-class Zhuxi tungsten deposit, South China[J]. Acta Geologica Sinica-English Edition, 94(6): 1940-1959.
Zhang Jiajia, Zhang Shunlin, Wang Qingsong, Gu Danian. 2020. Application of comprehensive geophysical prospecting method in ore prospecting in coverage area: A case study of integrated survey area of Wuhe gold mine in Eastern Anhui[J]. Geological Survey of China, 7(6): 109-115(in Chinese with English abstract).
Zhang Wenhao, Wang Dandan, Li Shizhen, Zhou Xingui, Zhang jiaodong, Liu Weibin, Zhou Ximing, Wang Peiye. 2019. The application of gravity-magnetic-electric prospecting engineering for Carboniferous-Permian petroleum geological survey in Sanjiang Basin, Heilongjiang Province[J]. Geology in China, 46(1): 191-201(in Chinese with English abstract).
Zhao Min, Sheng Yong, Qi Lianggang. 2019. The application of high precision gravity and magnetic survey to prospecting in coverage area: A case study of the reconnaissance of Weishan iron and copper deposit in Wuwei County[J]. Geophysical and Geochemical Exploration, 43(6): 1211-1216(in Chinese with English abstract).
Zhu Yuzhen, Qiang Jianke, Wang Linfei, Zhang Wenyan, Dai Shikun. 2019. Three-dimensional inversion analysis of magnetic data from deep buried iron ore and prediction of prospecting target area[J]. Geophysical and Geochemical Exploration, 43(6): 1182-1190(in Chinese with English abstract).
曹新志, 张旺生, 孙华山. 2009. 我国深部找矿研究进展综述[J]. 地质科技情报, 28(2): 104-109. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ200902018.htm
陈晓曼, 王娟, 王继国, 翟东亮, 蔡图. 2017. 山东省齐河大张铁矿地质特征及找矿前景[J]. 山东国土资源, 33(12): 24-29.
丁文祥, 袁峰, 李晓晖, 孙维安, 刘光贤, 杨迪. 2018. 基于重磁联合反演的宁芜盆地钟姑矿田深部地质结构解析及成矿预测[J]. 地质学报, 92(11): 2301-2317.
樊文鑫, 李光明, 焦彦杰, 梁生贤. 2019. 重磁场特征对西藏扎西康矿集区构造格架与成矿的启示[J]. 吉林大学学报(地球科学版), 49(6): 1741-1754. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201906021.htm
范正国, 黄旭钊, 熊盛青. 2010. 磁测资料应用技术要求[M]. 北京: 地质出版社.
郝兴中, 杨毅恒, 李英平, 高华丽, 陈磊. 2019. 鲁西齐河地区铁矿控矿特征及找矿标志[J]. 吉林大学学报(地球科学版), 49(4): 982-991. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ201904007.htm
郝兴中, 郑金明, 刘伟, 王润生, 王巧云, 张贵丽. 2020. 山东省齐河-禹城地区矽卡岩型铁矿成矿预测[J]. 地球学报, 41(2): 293-302. https://www.cnki.com.cn/Article/CJFDTOTAL-DQXB202002018.htm
刘光鼎, 郝天珧. 1995. 应用地球物理方法寻找隐伏矿床[J]. 地球物理学报, 38(6): 850-854.
孟贵祥, 吕庆田, 严加永, 邓震, 祁光, 薛融晖. 2019. "穿透性"探测技术在覆盖区地质矿产调查中的应用研究[J]. 地球学报, 40(5): 637-650.
宋明春, 宋英昕, 丁正江, 魏绪峰, 孙绍立, 宋国政, 张军进, 张丕建, 王永国. 2019. 胶东焦家和三山岛巨型金矿床的发现及有关问题讨论[J]. 大地构造与成矿学, 43(1): 92-110. https://www.cnki.com.cn/Article/CJFDTOTAL-DGYK201901008.htm
孙中宇, 刘展, 杨博, 张旺, 张勇, 孟祥君. 2018. 海阳凹陷东、西边界以及胶莱盆地东部边界讨论[J]. 地球物理学进展, 33(5): 2166-2171. https://www.cnki.com.cn/Article/CJFDTOTAL-DQWJ201805053.htm
陶龙, 张莎莎, 兰学毅, 汤正江, 安明, 严加永, 王云云, 郭冬, 叶林, 洪大军. 2019. 1: 5万重磁勘查在安徽宣城覆盖区地质找矿中的应用探索[J]. 中国地质, 46(4): 894-905. http://geochina.cgs.gov.cn/geochina/article/abstract/20190418?st=search
田红军, 尹文斌, 刘光迪, 蒋永芳, 游文兵. 2020. 广域电磁法在低阻覆盖区的应用与评价-以河南中牟为例[J]. 物探与化探, 44(5): 1025-1030. https://www.cnki.com.cn/Article/CJFDTOTAL-WTYH202005006.htm
王赛昕, 颜廷杰, 左焕成. 2017. 高精度磁测在攀枝花外围寻找钒钛磁铁矿的效果[J]. 地质科技情报, 36(3): 255-261.
吴成平, 于长春, 王卫平, 马勋表, 范正国, 朱宏伟. 2019. 鲁西齐河地区岩(矿)石物性特征及应用[J]. 地球科学进展, 34(10): 1099-1107. https://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ201910011.htm
张家嘉, 张顺林, 汪青松, 顾大年. 2020. 综合物探方法在覆盖区找矿中的应用-以皖东五河金矿整装勘查为例[J]. 中国地质调查, 7(6): 109-115. https://www.cnki.com.cn/Article/CJFDTOTAL-DZDC202006014.htm
张文浩, 王丹丹, 李世臻, 周新桂, 张交东, 刘卫彬, 周锡明, 王佩业. 2019. 重磁电勘探在黑龙江三江盆地石炭系-二叠系油气地质调查中的应用[J]. 中国地质, 46(1): 191-201. http://geochina.cgs.gov.cn/geochina/article/abstract/20190112?st=search
赵敏, 盛勇, 戚良刚. 2019. 高精度重磁测量在覆盖区找矿中的应用-以无为县蔚山铁铜矿预查为例[J]. 物探与化探, 43(6): 1211-1216.
朱裕振, 强建科, 王林飞, 张文艳, 戴世坤. 2019. 深埋铁矿磁测数据三维反演分析与找矿靶区预测[J]. 物探与化探, 43(6): 1182-1190.
朱裕振, 周明磊, 高志军, 张心彬. 2018. 山东齐河-禹城地区矽卡岩型富铁矿的发现及其意义[J]. 地质通报, 37(5): 938-944. https://www.cnki.com.cn/Article/CJFDTOTAL-ZQYD201805016.htm
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