山东省东阿县单庄铁矿床地质特征及找矿前景
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摘要
近年,山东东阿单庄地区铁矿找矿取得重大突破,探求铁矿石资源量约3.5亿t。山东东阿单庄铁矿为汶上-东平铁矿带的北延部分,矿区可分为柳林屯和前翟坊2个矿段,矿体赋存于泰山岩群山草峪组地层中,呈NW向带状展布,累计发现大小磁铁矿体27个,包括主要矿体7个,倾向SW,倾角53°~67°,矿体一般向深部有变陡、变富、变厚的趋势,矿体平均真厚度8.49 m,TFe平均品位28.38%,m Fe平均品位23.21%。通过对单庄地区铁矿地质特征、地球物理特征等综合研究,大致查明了单庄铁矿床矿体的形态、产状、规模、分布、厚度、矿石特征等。根据矿床成因类型,结合铁矿床的具体特点,认为该区铁矿找矿标志有地层、地球物理、矿体的赋存特征等3个主要标志,矿区的深部和外围成矿潜力巨大。
In recent years,great progress has been made in iron ore exploration in Shanzhuang area in Dong 'e county in Shandong province. The amount of iron ore resources is about 3.5 billon tons. Shanzhuang iron deposit is the north extension part of Dongping iron deposit belt. The mine can be divided into Liulintun ore section and Qianzhaifang ore section. Ore bodies occurrs in Shancaoyu formation of Taishan group,and distributed in belt type with the trend of NW. 27 magnetite ore bodies have been found,and 7 are main ore bodies with the trend of SW,and the dip angle is 53° ~ 67°. Ore bodies has the trend of becoming steep,rich and thick to the deep part. Avergae true thickness is 8.49 m,average degree of TFe is 28.38%,and average degree of m Fe is 23.21%. Through comprehensive research of geological characteristics and geophysical characteristics of iron deposit in Shanzhuang area,the shape,occurrence,scale,distribution,thickness and mineral characteristics of Shanzhuang iron deposit have been identified. According to types of the deposits,combining with the characteristics of iron deposit,it is regarded that strata,geophysics and occurrence of ore bodies are three main prospecting indicators. There is a large metallogenic potential in the deep and peripheral areas in this area.
In recent years,great progress has been made in iron ore exploration in Shanzhuang area in Dong 'e county in Shandong province. The amount of iron ore resources is about 3.5 billon tons. Shanzhuang iron deposit is the north extension part of Dongping iron deposit belt. The mine can be divided into Liulintun ore section and Qianzhaifang ore section. Ore bodies occurrs in Shancaoyu formation of Taishan group,and distributed in belt type with the trend of NW. 27 magnetite ore bodies have been found,and 7 are main ore bodies with the trend of SW,and the dip angle is 53° ~ 67°. Ore bodies has the trend of becoming steep,rich and thick to the deep part. Avergae true thickness is 8.49 m,average degree of TFe is 28.38%,and average degree of m Fe is 23.21%. Through comprehensive research of geological characteristics and geophysical characteristics of iron deposit in Shanzhuang area,the shape,occurrence,scale,distribution,thickness and mineral characteristics of Shanzhuang iron deposit have been identified. According to types of the deposits,combining with the characteristics of iron deposit,it is regarded that strata,geophysics and occurrence of ore bodies are three main prospecting indicators. There is a large metallogenic potential in the deep and peripheral areas in this area.
引文
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[22]徐启东,张晓军,尚恒胜,等.构建覆盖区综合地质找矿思路和流程的探索:以内蒙古锡林郭勒西北部为例[J].地球科学—中国地质大学学报,2012,37(11):1252-1258.
[23]管志宁.我国磁法勘探的研究与进展[J].地球物理学报,1997,40(S1):299-307.
[24]娄德波,宋国玺,李楠,等.磁法在我国矿产预测中的应用[J].地球物理学进展,2008,23(1):249-256.
[25]李淑玲,孟小红,范正国,等.危机矿山重磁资料精细处理与解释:以湖北省大冶铁矿为例[J].地球科学—中国地质大学学报,2007,32(4):559-563.
[26]刘天佑,吴招才,詹应林,等.磁异常小波多尺度分解及危机矿山的深部找矿:以大冶铁矿为例[J].地球科学—中国地质大学学报,2007,32(1):135-140.
[2]于学峰,张天祯,王虹,等.山东矿床成矿系列[M].北京:地质出版社,2015:1-47.
[3]宋明春,王沛成.山东省区域地质[M].济南:山东省地图出版社,2003:30-31.
[4]王继芳,徐然,杜显彪,等.山东省东平县大高庄铁矿床地质特征及矿床成因[J].山东国土资源,2016,32(5):31-36.
[5]冯玺平,边丛林,刘超,等.山东省兰陵县草主山矿区铁矿床地质特征和找矿远景分析[J].山东国土资源,2017,33(12):17-23.
[6]李厚民,王登红,李立兴,等.中国铁矿成矿规律及重点矿集区资源潜力分析[J].中国地质,2012,39(3):559-580.
[7]沈保丰.中国BIF型铁矿床地质特征和资源远景[J].地质学报,2012,86(9):1376-1395.
[8]安仰生,韩廷宝,刘邦君,等.山东苍山王埝沟铁矿床地质特征及找矿方法探讨[J].山东国土资源,2008,24(7-8):40-43.
[9]李银真,王玉吉,申文环.山东苍山县兰陵铁矿矿体特征及变化规律研究[J].中国煤炭地质,2014,26(11):69-75.
[10]徐兴军,王娥.山东省苍山县沟西—西官庄铁矿成矿规律探讨[J].东华理工大学学报(自然科学版),2012,35(4):358-363.
[11]郝兴中,杨毅恒,李英平,等.山东苍峄铁矿带预测模型[J].吉林大学学报(地球科学版),2013,43(4):1136-1142.
[12]郝兴中.鲁西地区铁矿成矿规律与预测研究[D].北京:中国地质大学,2014:16-112.
[13]郝兴中,李洪奎,李英平,等.山东单县地区BIF型铁矿成矿时代—SHRIMP U-Pb锆石定年[J].山东国土资源,2017,33(3):1-7.
[14]张连昌,翟明国,万渝生,等.华北克拉通前寒武纪BIF铁矿研究:进展与问题[J].岩石学报,2012,28(11):3431-3445.
[15]万渝生.华北克拉通鲁西地区早前寒武纪表壳岩系重新划分和BIF形成时代[J].岩石学报,2012,28(11):3457-3475.
[16]万渝生,董春艳,颉颃强,等.华北克拉通早前寒武纪条带状铁建造形成时代—SHRIMP锆石U-Pb定年[J].地质学报,2012,86(9):1447-1478.
[17]王世进,万渝生,宋志勇,等.鲁西泰山岩群地层划分及形成时代—SHRIMP U-Pb测年的证据[J].山东国土资源,2015,31(10):17-22.
[18]郭宝奎,熊玉新,孙斌,等.山东省苍山县凤凰山铁矿铁品位统计分析[J].山东国土资源,2012,28(11):13-16.
[19]石教波,谢玉玲,徐九华,等.综合找矿方法在大冶铁矿深部勘查中的应用[J].矿床地质,2006,25(Z):443-446.
[20]李军,王彦明,王志亮,等.高精度磁测在格尔木市扎玛日那西铁矿勘查中的应用[J].山东国土资源,2015,31(6):60-63.
[21]邱光辉,王海焦,张海亮,等.重磁方法在程家村隐伏磁铁矿勘查中的应用[J].山东国土资源,2016,32(10):46-50.
[22]徐启东,张晓军,尚恒胜,等.构建覆盖区综合地质找矿思路和流程的探索:以内蒙古锡林郭勒西北部为例[J].地球科学—中国地质大学学报,2012,37(11):1252-1258.
[23]管志宁.我国磁法勘探的研究与进展[J].地球物理学报,1997,40(S1):299-307.
[24]娄德波,宋国玺,李楠,等.磁法在我国矿产预测中的应用[J].地球物理学进展,2008,23(1):249-256.
[25]李淑玲,孟小红,范正国,等.危机矿山重磁资料精细处理与解释:以湖北省大冶铁矿为例[J].地球科学—中国地质大学学报,2007,32(4):559-563.
[26]刘天佑,吴招才,詹应林,等.磁异常小波多尺度分解及危机矿山的深部找矿:以大冶铁矿为例[J].地球科学—中国地质大学学报,2007,32(1):135-140.