Deep conductive structure of Anba ore section in Yangshan gold deposit belt and its geological meaning
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摘要: 为查明阳山金矿带重点成矿区安坝矿段深部地质构造格架,更好地指导普查工作布设并寻找成矿远景区,利用V8电法工作站,在重点成矿区安坝矿段开展可控源音频大地电磁测量,将测量成果与已有钻孔剖面进行对比分析,初步厘定了安坝矿段的深部电性结构特征为NEE走向、略向东倾伏的背斜构造,查明浅部构造破碎带为成矿的有利位置,提出地球物理找矿方向为呈高低视电阻率异常过渡带特征的破碎带,同时也证明了通过可控源音频大地电磁测量探测控矿构造特征的可实施性,该方法是较好的找矿辅助途径。研究成果对复杂地形下多金属矿床勘查具有一定的借鉴意义。Abstract: In order to ascertain the deep geological tectonic frame in key mineralization areas of Anba ore section in Yangshan gold deposit belt, and guide the layout of census work and metallogenic zone, the authors in this paper used V8 electrical law workstation to detect Controlled Source Audio-frequency Magneto-telluric (CSAMT) in key mineralization areas of Anba ore section. Comparing the results with existing drilling profiles, the deep conductive structure in Anba ore section is preliminarily defined as anticlinal structure of NEE direction with a plunge of east direction. The shallow tectonic fractured belt is identified as an advantage point, and transition belt with characteristics of abnormal high and low apparent resistivity is supposed to be geophysical prospecting direction. And the CSAMT is proven to be enforceable in detecting ore-controlling structures characteristics, which is the auxiliary approach in prospecting and has guidance effect on polymetallic mineral exploration in complex landform.
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Key words:
- Yangshan gold deposit /
- apparent resistivity /
- CSAMT /
- anticline structure /
- fault
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[1] 郭俊华,齐金忠,孙彬,等.甘肃阳山特大型金矿床地质特征及成因[J].黄金地质,2002,8(2):15-19.
[2] Guo J H,Qi J Z,Sun B,et al.Geological features and origin of Yangshan supper large gold deposit,Gansu[J].Gold Geol,2002,8(2):15-19.
[2] 毛世东,杨荣生,秦艳,等.甘肃阳山金矿田载金矿物特征及金赋存状态研究[J].岩石学报,2009,25(11):2776-2790.
[4] Mao S D,Yang R S,Qin Y,et al.Characteristics of gold-bearing mineral and occurrence of gold in the Yangshan gold field,Gansu Province[J].Acta Petrol Sin,2009,25(11):2776-2790.
[3] 齐金忠,袁士松,李莉,等.甘肃省文县阳山特大型金矿床地质特征及控矿因素分析[J].地质论评,2003,49(1):85-92.
[6] Qi J Z,Yuan S S,Li L,et al.Geological features and ore-contro-lling factors of the Yangshan superlarge gold deposit,Gansu Pro-vince,China[J].Geol Rev,2003,49(1):85-92.
[4] 雷时斌,齐金忠.甘肃阳山金矿带地球动力学体制与多因耦合成矿作用[J].地质与勘探,2007,43(2):33-39.
[8] Lei S B,Qi J Z.Geodynamics system and multi-factor coupling mineralization in the Yangshan gold belt,Gansu[J].Geol Prospect,2007,43(2):33-39.
[5] 雷时斌. 甘肃阳山金矿带构造-岩浆成矿作用及勘查找矿方向[D].北京:中国地质大学(北京),2011.
[10] Lei S B.Tectonic and Magmatic Constraints on Mineralization and Gold Prospecting of Yangshan Gold Belt,Gansu Province[D].Beijing:China University of Geosciences (Beijing),2011.
[6] 齐金忠,杨贵才,李莉,等.甘肃省阳山金矿床稳定同位素地球化学和成矿年代学及矿床成因[J].中国地质,2006,33(6):1345-1353.
[12] Qi J Z,Yang G C,Li L,et al.Isotope geochemistry,chronology and genesis of the Yangshan gold deposit,Gansu[J].Geol China,2006,33(6):1345-1353.
[7] 张作伦,曾庆栋,于昌明,等.利用EH4、GDP-32Ⅱ预测内蒙新民煤田煤系地层空间特征[J].地球物理学进展,2009,24(1):303-308.
[14] Zhang Z L,Zeng Q D,Yu C M,et al.Application of EH4 and GDP-32 II to forecast of underground coal formation stratum space distribution characteristics in Xinmin,Inner Mongolia[J].Prog Geophys,2009,24(1):303-308.
[8] 李宏伟. 甘肃阳山金矿带安坝矿段深部电性特征及控矿断裂系统的识别[J].地球物理学进展,2018,33(5):1919-1926.
[16] Li H W.Deep electrical characteristics and identification of ore controlling faults system of Anba ore section in the Yangshan gold-ore belt of Gansu Province[J].Prog Geophys,2018,33(5):1919-1926.
[9] 林方丽,王光杰,杨晓勇.综合电磁法在矿区深部成矿机制中的应用研究——以皖南乌溪多金属矿区为例[J].地球物理学报,2016,59(11):4323-4337.
[18] Lin F L,Wang G J,Yang X Y,et al.Application of comprehensive electromagnetic study in deep mineralization mechanism:A case study of the Wuxi polymetallic ore deposit,south Anhui[J].Chin J Geophys,2016,59(11):4323-4337.
[10] 汤井田,何继善.可控源音频大地电磁法及其应用[M].长沙:中南大学出版社,2005.
[20] Tang J T,He J S.Theory and Application of Controlled Source Audio Frequency Magnetotelluric Method[M].Changsha:Central South University Press,2005.
[11] 张伟,季国松,廖国忠,等.黔西南"断控型"金矿床的找矿模式与勘探评价方法——以丫他金矿床为例[J].地质学报,2021,95(12):3961-3978.
[22] Zhang W,Ji G S,Liao G Z,et al.Prospecting model and exploration evaluation method of "fault controlled" gold deposits in southwest Guizhou:A case study of Yata gold deposit[J].Acta Geol Sin,2021,95(12):3961-3978.
[12] 岳大斌,王章翔,陈加中,等.综合技术方法在寻找含矿岩浆通道中的应用——以四川杨柳坪岩浆铜镍硫化物矿床为例[J].物探与化探,2021,45(3):601-608.
[24] Yue D B,Wang Z X,Chen J Z,et al.The application of integrated measures to the search of magma conduit:A case study of the Yangliuping Cu-Ni sulfide deposit,Sichuan Province[J].Geophys Geochem Explor,2021,45(3):601-608.
[13] 陈小龙,高坡,程顺达,等.西藏帮浦东段—笛给铅锌矿区CSAMT异常特征与深部找矿预测[J].物探与化探,2021,45(2):361-368.
[26] Chen X L,Gao P,Cheng S D,et al.A study of anomaly characteristics of CSAMT and deep prospecting prediction of the lead-zinc deposits in eastern Bangpu-Digei mining area of Tibet[J].Geophys Geochem Explor,2021,45(2):361-368.
[14] 赵维俊,赵院冬,王正茂,等.黑龙江省白石砬子地区音频大地电磁圈定金矿(化)[J].地球物理学进展,2017,32(4):1742-1751.
[28] Zhao W J,Zhao Y D,Wang Z M,et al.Delineation of gold mineralization through AMT approach in the Baishilazi region,Heilongjiang,China[J].Prog Geophys,2017,32(4):1742-1751.
[15] 李英宾. 可控源音频大地电磁测量对腾格尔坳陷东北缘下白垩统赛汉组砂体的识别及基地质意义[J].物探与化探,2021,45(3):616-623.
[30] Li Y B.The identification of the sand body of Lower Cretaceous Saihan Formation on the northeastern margin of Tengger depression by controlled source audio frequency magnetotelluric sur-vey[J].Geophys Geochem Explor,2021,45(3):616-623.
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