Lineaments and Their Controls of Gold Mineralization in Tulasu Area, Xinjiang, China
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摘要: 采用多种数值图像进行线性构造解译, 其中DEM和NOAA主要用于区域尺度, TM用于勘探区尺度, 地面磁法数据用于靶区范围的解译分析. 研究认为该区线性构造与金矿床的空间分布关系密切, 表现为: (1)区域尺度的一级控矿构造为NEE、NE和NW向构造的交汇部位; 吐拉苏地区的一级控矿构造为WNW和NNW及NE方向构造的交汇部位; (2)吐拉苏地区的次级控矿构造为NNE和环形构造的交汇部位; (3)靶区的一级控矿构造为NE、SN和环形构造. 线性构造异常分析结果显示, 当线性构造的优益度大于40时, 有较大的成矿可能性.Abstract: On the basis of lineament interpretation of DEM, TM, NOAA and ground magnetics, this study suggests that lineaments spatially coupled with gold deposits distribution. At regional scale, the first-order structural controls are NEE, NE and NW trending structures, particularly at their intersecting sites. At project scale, the first-order structural controls are WNW, NNW and NE structures, and the second-order structures are NNE and ring structures. At prospect scale, the NE, SN and ring structures are the most important structural controls. There is great potential of gold targets when the advantageous of lineament anomaly are higher than 40 at project scale.
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Key words:
- lineament interpretation /
- gold deposit /
- structural control /
- target-prospecting /
- Tulasu /
- Xinjiang
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图 1 新疆吐拉苏地区地质略图
1. 土壤覆盖; 2. 沉积盖层; 3. 石炭系火山岩; 4. 奥陶系灰岩; 5. 元古宙基底; 6. 斑岩; 7. 花岗岩; 8. 金矿; 9. 铅锌矿; 10. 阿希金矿
Fig. 1. Geological sketch map of the Tulasuarea, Xinjiang
图 2 天山地区的主要线性构造②
1. 元古代线形构造; 2. 古生代线形构造; 3. 中生代—新生代线形构造; 4. 主要金矿床
Fig. 2. Major lineaments of the Tianshan orogen interpreted from DEM ②
图 3 吐拉苏地区的主要线性构造
Fig. 3. Major lineaments of the Tulasu area, Xinjiang, interpreted from TM, MSS, NOAA and ground magnetic survey results
图 4 吐拉苏地区线性构造分形特征
n. 含有线形体的盒子数; a. 区域范围; b. 吐拉苏地区
Fig. 4. Box-counting curves for interpreted lineaments
图 5 吐拉苏地区线性构造异常优益度等值线(基于图 3, μ=0. 6, 可信度阀值)
Fig. 5. Contour map of lineament advantageous in the Tulasu area
表 1 用于计算优益度的线性体权重
Table 1. Weights of lineaments used for advantageous calculation
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[1] 赵鹏大, 陈永清, 刘吉平, 等. 地质异常成矿预测理论与实践[M]. 武汉: 中国地质大学出版社, 1999.138.ZHAO P D, CHEN Y Q, LIU J P, et al. Theory and practice of geoanomaly in mineral exploration[M]. Wuhan: China University of Geosciences Press, 1999. 138. [2] 赵不亿, 秦小光. 遥感构造的定量分析方法[J]. 地质科技情报, 1998, 7(1): 127-136.ZHAO B Y, QIN X G. Quantitative analysis methods for remote-sensing structure[J]. Geological Science and Technology Information, 1998, 7(1): 127-136. [3] 刘燕君. 遥感找矿的原理和方法[M]. 北京: 地质出版社, 1991.LIU Y J. Principle and methodology for remote-sensing exploration[M]. Beijing : Geological Publishing House, 1991. [4] Xiao L. A study of fractal distribution of gold deposits and metallogenesis of Jinxi-Yelmend epithermal gold prospect in the Tulasu area, Xinjiang, China[D]. Wuhan: China University of Geosciences, 2000. [5] 毋瑞身, 田昌烈, 杨芳林, 等. 西天山成矿区成矿地质条件与矿产资源综合评价研究[R]. 新疆: 新疆305项目办公室, 1995. 248.WU R S, TIAN C L, YANG F L, et al. Mineralization patterns and targeting in flanking regions of Arxi gold deposit in Yining[R]. Xinjiang: Publication of National 305 Project Office of Xinjiang Uygur Autonomous Region, China, 1995. 248. [6] XIAO L, WANG F Z. Epithermal gold mineralization in Chinese Tianshan gold province[J]. Journal of China University of Geosciences, 1990, 11(4): 119-124. [7] 曾佐勋, 胡以铿, 周继彬, 等. 陕甘川邻接区滑脱挤出构造与金矿的关系[J]. 地球科学———中国地质大学学报, 2001, 25(6): 631-637. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200106011.htmZENG Z X, HU Y K, ZHOU J B, et al. Relationship between décollement-extrusion tectonics and gold deposits in adjoining area of Sichuan, Gansu and Shaanxi provinces [J]. Earth Scinece — Journal of China University of Geosciences, 2001, 25(6): 631-637. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200106011.htm [8] 毛景文, 杨建民, 韩春明, 等. 东天山铜金多金属矿床成矿系统和成矿地球动力学模型[J]. 地球科学———中国地质大学学报, 2002, 27(4): 413-424. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200204012.htmMAO J W, YANG J M, HAN C M, et al. Metallogenic systems of polymetallic copper and gold deposits and related metallogenic geodynamic model in eastern Tianshan, Xinjiang[J]. Earth Scinece — Journal of China University of Geosciences, 2002, 27(4): 413-424. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200204012.htm [9] 姚书振, 丁振举, 周宗桂, 等. 秦岭造山带金属成矿系统[J]. 地球科学———中国地质大学学报, 2002, 27(5): 599-604. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200205019.htmYAO S Z, DING Z J, ZHOU Z G, et al. Metallogenic systems of Qinling orogen[J]. Earth Scinece — Journal of China University of Geosciences, 2002, 27(5): 599 - 604. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200205019.htm [10] 新疆维吾尔自治区地质矿产局. 新疆维吾尔自治区区域地质志[M]. 北京: 地质出版社, 1993. 27, 676.Bureau of Geology and Mineral Resources of Xinjiang Uygur Autonomous Region. Regional geology of Xinjiang uygur autonomous region, Geol Mem[M]. Beijing: Geological Publishing House, 1993. 27, 676. [11] 肖序常, 汤跃庆, 冯益民, 等. 新疆北部及邻区大地构造[M]. 北京: 地质出版社, 1992. 169.XIAO X C, TANG Y Q, FENG Y M, et al. Tectonic evolution of northern Xinjiang and its adjacent regions [M]. Beijing: Geological Publishing House, 1992. 169. [12] 陈哲夫, 成守德, 梁云海, 等. 新疆开合构造与成矿[M]. 乌鲁木齐: 新疆科技卫生出版社, 1997. 394.CHEN Z F, CHENG S D, LIANG Y H, et al. Openingclosing tectonics and mineralization in Xinjiang[M]. Urumqi: Xinjiang Science Technology and Hygiene Publishing House, 1997. 394. [13] 高怀忠, 张旺生. 东准噶尔强应变构造带成矿系统的特征、成矿流体和热动力条件分析[J]. 地球科学——中国地质大学学报, 2000, 25 (4): 369-374. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200004006.htmGAO H Z, ZHANG W S. Characteristics and metallogenic fluid and thermodynamic condition analysis of metallogenic system in highly strained structural belt, east Junggar [J]. Earth Scinece — Journal of China University Geosciences, 2000, 25 (4): 369-374. http://www.cnki.com.cn/Article/CJFDTotal-DQKX200004006.htm [14] 邓军, 杨立强, 孙忠实, 等. 构造体制转换与流体多层循环成矿动力学[J]. 地球科学——中国地质大学学报, 2000, 25(4) : 397-403.DENG J, YANG L Q, SUN Z S, et al. Ore-forming dynamics of tectonic regime transformation and multi-layer fluid circulation[J]. Earth Scinece — Journal of China University Geosciences, 2000, 25 (4): 397-403. [15] Barton C C, Larsen E. Fractal geometry of two-dimensional fracture networks at Yucca Mountain, Southwest Nevada[A]. In : Stephannson O, ed. Fundamentals of rock joints: proceedings of the international symposium on fundamentals of rock joints[C]. Sweden : Bjorkkliden, 1985. 77-84. -
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