Strata Hosted Makeng Type Iron Deposits and Prospecting Orientation in the Wuyishan Covered Region
-
摘要: 马坑式铁矿床是永梅晚古生代坳陷次一级北东向龙漳基底断裂凹陷带内的大型铁矿床.其赋矿层位并不是很清楚, 这影响了找矿工作.在野外地质调查和认真总结前人研究成果的基础上, 探讨了马坑式铁矿的控矿因素, 认为马坑式矿区的褶皱主体为倒转背斜, 而不是背斜的一翼; 经畲组-栖霞组(C2j-P1q)及其与上覆文笔山组(P1w)之间的界面才是马坑式铁矿的赋矿层位, 而不是林西组(C1l)与上覆经畲组-栖霞组(C2j-P1q) 之间的界面; 认为逆冲推覆构造也是重要的控矿因素, 并指出了找矿方向.燕山期逆冲推覆构造是Izanagi板块自南东向北西方向向欧亚板块之下俯冲所产生的结果.Abstract: Makeng type iron deposit is a large deposit in the secondary NE-trending Longzhang basal fracture sag zone of the Late Paleozoic depression of Yongmei. The prospecting breakthrough has been hindered due to the fact that we are not very clear about the type of the strata hosted Makeng type iron deposits. On the basis of field investigation and conscientious study of the results of previous researches, this paper explores ore-controlling factors of the Makeng type iron deposit. It is found that the fold in the Makeng mine district is an overturned anticline instead of one limb of the anticline, and that the Yanshanian thrust nappe structure is the results generated by the subduction of Izanagi plate under the Eurasian plate from southeast to northwest. It is suggested that the Jingshe Formation-Qixia Formation (C2j-P1q) and interface between the Jingshe Formation-Qixia Formation (C2j-P1q) and the Wenbishan Formation (P1w) are the horizon hosted Makeng type iron deposit, and that the thrust nappe structure is also important ore-controlling factors. In addition, this paper also presents the prospecting direction.
-
图 1 闽西南地质略图
1.前泥盆纪侵入岩；2.海西-印支期侵入岩；3.燕山期侵入岩；4.基底岩系；5.盖层岩系；6.燕山期火山岩系；7.主干断层；8.大中小型铁矿床及矿化点；9.推覆构造带及编号
Fig. 1. Geological sketch map of southwestern Fujian Province
图 2 马坑矿区地质图(据福建省地质八队，福建省龙岩市马坑铁矿床地质特征及成矿地质条件研究报告，1982)
1.第四系；2.二叠系下统童子岩组第二段；3.二叠系童子岩组第一段；4.二叠系下统文笔山组；5.石炭系上统经畲组-二叠系下统栖霞组；6.石炭系下统林地组；7.奥陶系罗峰溪组；8.熔结凝灰角砾岩(?)；9.辉绿玢岩；10.辉绿岩类；11.辉长辉绿岩；12.辉绿闪长岩；13.燕山期黑云母花岗岩；14.花岗斑岩；15.褐铁矿；16.矽卡岩；17.实测、推测正断层；18.实测、推测逆断层；19.实测、推测性质不明断层；20.断层破碎带；21.向斜轴、背斜轴；22.倒转向斜轴、倒转背斜轴；23.实测、推测地质界线；24.断层产状及倾向；25.岩层产状及倾角；26.勘探线及编号；27.河流；F1~F13为断层编号
Fig. 2. Geological map of Makeng mine district
图 3 马坑矿区61勘探线地质剖面图(福建省地质八队，福建省龙岩市马坑铁矿床地质特征及成矿地质条件研究报告，1982)
1.第四系；2.二叠系下统童子岩组第二段；3.二叠系童子岩组第一段；4.二叠系下统文笔山组；5.燕山期黑云母花岗岩；6.矽卡岩; 7.石炭系上统经畲组-二叠系下统栖霞组；8.石炭系下统林地组；9.实测、推测性质不明断层；10.熔结凝灰角砾岩(?)；11.断层破碎带；12.磁铁矿；13.辉绿玢岩；14.辉长辉绿岩；15.辉绿闪长岩；16.辉钼矿脉
Fig. 3. No. 61 prospecting line geological cross section of Makeng mine district
图 4 马坑矿区矿体下盘由近及远的蚀变分带
200 m中段214穿脉矿体下盘由近及远蚀变分带为硅化→绢英岩化→硅化砂质泥岩(a→d)
Fig. 4. Alteration zoning for the footwall of orebody from proximity to distance
图 5 褐铁矿化矽卡岩(a)和褐铁矿化石榴石矽卡岩(b)的逆冲
Fig. 5. The thrust of limonitized skarn and limonitized garnet skarn
图 6 阳山东矿区34线地质剖面图(赵一鸣等，1983)
1.板岩；2.角岩；3.大理岩；4.矽卡岩；5.片理化变质粉砂岩；6.花岗岩；7.磁铁矿体；8.断层
Fig. 6. No. 61 prospecting line geological cross section of eastern Yangshan mine district
图 7 马坑矿区与矽卡岩有关的侵入体成矿种类判别图(图式据Meinert et al., 2005，数据据赵一鸣等, 1983)
Fig. 7. Mineralization discrimination diagram of intrusions associated with skarn in making mine district
图 8 马坑矿区61线主矿体矿石自然类型分带(据邢文臣等，1982)
1.砂岩；2.凝灰质(粉砂岩)；3.灰岩(大理岩)；4.铁矿；5.安山岩(?)；6.辉绿岩；7.石榴石磁铁矿；8.透辉石磁铁矿；9.绢云母磁铁矿(含矿凝灰岩)；10.绿泥石磁铁矿(含矿凝灰岩)；11.石英磁铁矿；12.上石炭统船山组(C2c)、下石炭统林地组(C1l)
Fig. 8. Ore natural type zoning of main orebody on No. 61 prospecting line of Makeng mine district
-
Bian, X.Z., Gao, T.J., 1982. Discussion on the assembledges of metallogenic types of iron ore deposits in the Yong-mei depression and problems on exploring. Geology of Fujian, (2): 53-68 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-FJDZ198202002.htm Chen, S.R., Xie, J.H., Xu, C.N., et al., 1985. The origin of Makeng iron deposit, Fujian. Geochimica, (4): 350-357 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQHX198504007.htm Chen, Y.S., 2002. New knowledge of the information cause of ore deposit during the exploitation process of Makeng iron mine. Metal Mine, (11): 50-52 (in Chinese with English abstract). Chen, Y.S., 2010. New understanding of ore-control structure feature of Fujian Makeng iron mine. Metal Mine, (2): 96-99 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/ http://search.cnki.net/down/default.aspx?filename=JSKS201002024&dbcode=CJFD&year=2010&dflag=pdfdown Dong, S.W., Zhang, Y.Q., Chen, X.H., et al., 2008. The formation and deformational characteristics of East Asia multi-direction convergent tectonic system in Late Jurassic. Acta Geoscientica Sinica, 29(3): 306-317 (in Chinese with English abstract). http://www.researchgate.net/publication/283994810_The_formation_and_deformational_characteristics_of_East_Asia_multi-direction_convergent_tectonic_system_in_Late_Jurassic Gao, L.D., Zhu, X.F., Wang, S.T., 1985. The Late Paleozoic rocks in southwestern Fujian and the ore-controlling horizons of the Makeng-type iron-ore deposits. Bulletin of the Institute of Geology Chinese Academy of Geological Sciences, 12: 21-32 (in Chinese with English abstract). Guan, Y.X., Huang, Y.M., Tao, J.H., 1989. A preliminary discussion on nappe structure in Fujian. Geology of Fujian, 8(1): 14-34 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-FJDZ198901001.htm Guan, Y.X., Yang, T.S., 1994. Nappe structure research of Fujian Province and its significance. Geology of Fujian, 13(4): 248-277 (in Chinese with English abstract). Jiang, Y.F., 2007. Preliminary discussion on the genesis for middle ore block of Makeng iron deposit. Express Information of Mining Industry, (7): 69-77 (in Chinese). Jiang, Y.F., 2009. Analysis of ore-forming geological features of Makeng iron deposit. Morden Mining, (8): 89-91 (in Chinese). Li, X.M., Wu, Q., Wu, X.L., et al., 1980. A preliminary discussion on the ore-bearing horizons of the Makeng-type iron-ore deposits in Fujian Province. Journal of Stratigraphy, 4(1): 60-63 (in Chinese). Liu, W.G., Chen, Y.Z., 2006. The Geological fearure and genesis for middle ore block of Makeng iron deposit. Non-ferrous metals (Mine Section), 58(2): 14-16 (in Chinese). Luo, J.D., Yan, Q.N., 1980. On the horizon and the age of main seam of Makeng type iron deposits in southwestern Fujian. Scientia Geologica Sinica, (4): 331-339 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DZKX198004002.htm Mao, J.R., Chen, R., Li, J.Y., et al., 2006. Geochronology and geochemical characteristics of Late Mesozoic grantic rocks from southeastern Fujian and their tectonic evolution. Acta Petrlogica Sinica, 22(6): 1723-1734 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-CCDZ200401003.htm Meinert, L.D., Dipple, G.M., Nicolescu, S., 2005. World skarn deposits. Society of Economic Geologists. Inc., Economic Geology 100th Anniversary Volume, 299-336. No. 8 Geological Team, Fujian Bureau of Geology, 1982. The geological features of the Makeng (Longyan, Fujian Province) iron ore deposit and the discussion on its origin. Geology of Fujian, (1): 2-31 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-FJDZ198201001.htm Tao, J.H., 1987. An overthrust tectonic in southwest Fujian and its mechanism of formation. Geology of Fujian, 6(4): 249-270 (in Chinese with English abstract). Tao, J.H., 2008. On nappe structures and the ore-finding breakthrough in Fujian Province. Geology of Fujian, 27(2): 105-124 (in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical/fujdz200802003 Tao, J.H., Chen, F.L., 2006. Nappe structure in Fujian Province. Petroleum Geology & Experiment, 28(3): 259-285(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYSD200603013.htm Wang, E.K., Ouyang, Z.H., Liu, C., 1985. Discovery of an overthrust block group in Datian County, Fujian Province, and its geological significance. Chinese Science Bulletin, (3): 203-205 (in Chinese). http://www.cnki.com.cn/Article/CJFDTotal-JXTW198509016.htm Xing, W.C., Wang, W.B., Ji, S.X., et al., 1982. Genesis of iron deposits of Makeng type ore structure evidence. Bull. Nanjing Inst. Geo. M.R., Chinese Acad. Geol. Sci. , 3(2): 52-63 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-HSDZ198202003.htm Yu, X.Q., Di, Y.J., Wu, G.G., et al., 2009. The Early Jurassic magmatism in northern Guangdong Province, southeastern China: constraints from SHRIMP zircon U-Pb dating of Xialan complex. Science in China (Ser. D), 39(6): 681-693 (in Chinese). http://kns.cnki.net/KCMS/detail/detail.aspx?dbcode=CJFD&filename=JDXG200904005 Zhang, C.S., Mao, J.W., Xie, G.Q., et al., 2012a. Geology and molybdenite Re-Os ages of Makeng skarn-type Fe-Mo deposit in Fujian Province. Journal of Jilin University (Earth Science Edition), 42(Suppl. ): 224-236 (in Chinese with English abstract). http://www.researchgate.net/publication/280884724_Geology_and_molybdenite_Re-Os_ages_of_Makeng_skarn-type_Fe-Mo_deposit_in_Fujian_province Zhang, C.S., Su, H.M., Yu, M., et al., 2012b. Zircon U-Pb age and Nd-Sr-Pb isotopic characteristics of Dayang-Juzhou granite in Longyan, Fujian Province and its geological significance. Acta Petrologica Sinica, 28(1): 225-242(in Chinese with English abstract). Zhao, Y.M., Tan, H.J., Xu, Z.N., et al., 1983. The calcic-skarn iron ore deposits of Makeng type in southwestern Fujian. Bulletin of the Institute of Geology Chinese Academy of Geological Sciences, (1): 1-141 (in Chinese with English abstract). http://www.researchgate.net/publication/291303483_The_calcic-skarn_iron_ore_deposit_of_making_type_in_southwestern_Fujian Zhou, Z.Q., 2006. Characteristics of nappe structure in the southwest Fujian Province. Petroleum Geology & Experiment, 28(1): 38-41(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYSD200601007.htm Zou, T.R., Ge, C.H., Han, F., et al., 1981. On the mineragenetic characteristics of the Makeng iron deposits and their conditions of formation. Bulletin of the Institute of Geology Chinese Academy of Geological Sciences, 2(1): 1-24 (in Chinese with English abstract). 边效曾, 高天钧, 1982. "永梅坳陷"铁矿成矿类型系群的探讨与找矿. 福建地质, (2): 53-68. https://www.cnki.com.cn/Article/CJFDTOTAL-FJDZ198202002.htm 陈述荣, 谢家亨, 许超南, 等, 1985. 福建龙岩马坑铁矿床成因的探讨. 地球化学, (4): 350-357. doi: 10.3321/j.issn:0379-1726.1985.04.008 陈跃升, 2002. 马坑铁矿开发过程中对矿床成因的新认识. 金属矿山, (11): 50-52. doi: 10.3321/j.issn:1001-1250.2002.11.016 陈跃升, 2010. 对福建马坑铁矿床控矿构造特征的新认识. 金属矿山, (2): 96-99. https://www.cnki.com.cn/Article/CJFDTOTAL-JSKS201002024.htm 董树文, 张岳桥, 陈宣华, 等, 2008. 晚侏罗世东亚多向汇聚构造体系的形成与变形特征. 地球学报, 29(3): 306-317. doi: 10.3321/j.issn:1006-3021.2008.03.005 福建省地质八队, 1982. 福建龙岩马坑铁矿矿床地质特征及其成因探讨. 福建地质, (1): 2-31. https://www.cnki.com.cn/Article/CJFDTOTAL-FJDZ198201001.htm 高联达, 朱秀芳, 王士涛, 1985. 闽西南晚古生代地层及马坑式铁矿床控矿层位的探讨. 中国地质科学院地质研究所所刊, 12: 21-32. https://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGDJ198508001005.htm 关玉祥, 黄耀明, 陶建华, 1989. 初论福建推覆构造. 福建地质, 8(1): 14-34. https://www.cnki.com.cn/Article/CJFDTOTAL-FJDZ200802004.htm 关玉祥, 杨添水, 1994. 福建省推覆构造研究及其意义. 福建地质, 13(4): 248-277. https://www.cnki.com.cn/Article/CJFDTOTAL-FJDZ404.004.htm 姜益丰, 2007. 马坑铁矿中矿段矿床成因浅析. 矿业快报, (7): 69-77. https://www.cnki.com.cn/Article/CJFDTOTAL-KYKB200707025.htm 姜益丰, 2009. 马坑铁矿床成矿地质特征分析. 现代矿业, (8): 89-91. doi: 10.3969/j.issn.1674-6082.2009.08.030 李希敏, 吴歧, 吴小林, 等, 1980. 福建省"马坑式"铁矿含矿层位的初步探讨. 地层学杂志, 4(1): 60-63. https://www.cnki.com.cn/Article/CJFDTOTAL-DCXZ198001006.htm 刘武刚, 陈友智, 2006. 马坑铁矿中矿段地质特征及成因认识. 有色金属(矿山部分), 58(2): 14-16. doi: 10.3969/j.issn.1671-4172.2006.02.005 骆金锭, 鄢庆南, 1980. 闽西南马坑式铁矿主矿体的层位和时代. 地质科学, (4): 331-339. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX198004002.htm 毛建仁, 陈荣, 李寄嵎, 等, 2006. 闽西南地区晚中生代花岗质岩石的同位素年代学、地球化学及其构造演化. 岩石学报, 22(6): 1723-1734. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200606029.htm 陶建华, 1987. 闽西南地区东部逆冲推覆构造及其形成机制. 福建地质, 6(4): 249-270. https://www.cnki.com.cn/Article/CJFDTOTAL-FJDZ198704000.htm 陶建华, 2008. 福建推覆构造研究与找矿突破. 福建地质, 27(2): 105-124. doi: 10.3969/j.issn.1001-3970.2008.02.003 陶建华, 陈福龙, 2006. 福建推覆构造研究. 石油实验地质, 28(3): 259-285. doi: 10.3969/j.issn.1001-6112.2006.03.012 王尔康, 欧阳钟辉, 刘聪, 1985. 福建大田推覆构造群的发现及其地质意义. 科学通报, (3): 203-205. https://www.cnki.com.cn/Article/CJFDTOTAL-KXTB198503013.htm 邢文臣, 王文斌, 季绍新, 等, 1982. 从矿石结构构造看马坑式铁矿的成因. 中国地质科学院南京地质矿产研究所所刊, 3(2): 52-63. https://www.cnki.com.cn/Article/CJFDTOTAL-HSDZ198202003.htm 余心起, 狄永军, 吴淦国, 等, 2009. 粤北存在早侏罗世的岩浆活动——来自霞岚杂岩SHRIMP锆石U-Pb年代学的证据. 中国科学(D辑), 39(6): 681-693. https://www.cnki.com.cn/Article/CJFDTOTAL-JDXK200906001.htm 张承帅, 毛景文, 谢桂青, 等, 2012a. 福建马坑矽卡岩型铁(钼) 矿床地质特征及辉钼矿Re-Os同位素年龄. 吉林大学学报(地球科学版), 42(增刊): 224-236. https://www.cnki.com.cn/Article/CJFDTOTAL-CCDZ2012S1027.htm 张承帅, 苏慧敏, 于淼, 等, 2012b. 福建龙岩大洋-莒舟花岗岩锆石U-Pb年龄和Sr-Nd-Pb同位素特征及其地质意义. 岩石学报, 28(1): 225-242. https://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201201019.htm 赵一鸣, 谭惠静, 许振南, 等, 1983. 闽西南地区马坑式钙矽卡岩型铁矿床. 中国地质科学院矿床地质研究所所刊, (1): 1-141. https://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGDJ198300007002.htm 周珍琦, 2006. 闽西南地区推覆构造特征. 石油实验地质, 28(1): 38-41. doi: 10.3969/j.issn.1001-6112.2006.01.008 邹天人, 葛朝华, 韩发, 等, 1981. 论马坑铁矿的成矿特征和形成条件. 中国地质科学院矿床地质研究所所刊, 2(1): 1-24. https://cpfd.cnki.com.cn/Article/CPFDTOTAL-ZGDJ198100009002.htm -
下载:
点击查看大图
计量
- 文章访问数: 705
- HTML全文浏览量: 603
- PDF下载量: 10
- 被引次数: 0
