山东省东平-汶上铁矿带西侧低缓磁异常区铁矿初步验证及意义——以李官屯隐伏低缓磁异常铁矿为例
|
摘要
研究区位于鲁西地区重要的东平—汶上铁矿带西侧,为低缓磁异常区。通过高磁测量、井中三分量磁测、钻探验证等手段,在梁山李官屯附近低缓磁异常区发现铁矿一处,矿床类型为条带状铁建造(BIF)型铁矿。该区下伏地层主要为新太古代泰山岩群山草峪组,岩性为黑云变粒岩,局部夹磁铁石英岩、磁铁角闪石英岩,矿石的主要组成矿物为磁铁矿、黄铁矿、黄铜矿。研究区山草峪组大面积分布,根据成矿时代、赋矿层位、含铁建造及岩石组合,结合成矿规律研究分析,梁山地区的大面积条带状分布的低缓磁异常区是寻找隐伏铁矿体的有利部位。
The study area is located at the west of Dongping-Wenshang iron ore belt in western Shandong province. It is low magnetic anomaly area. By means of high magnetic measurement, Inaka Mi component magnetic measurement and drilling verification, one iron deposit has been found in low magnetic anomaly area. It is a banded iron formation(BIF) type iron deposit. The underlying strata in this area are mainly Shancaoyu formation in new Archean Taishan rock group. The lithology is biotite granulite, accompanying with magnetite quartzite and magnetite hornblende quartzite. Major mineral compositions are magnetite, pyrite and chalcopyrite. Shancaoyu formation is widely distributed in the study area. According to metallogenic epoch, ore bearing horizon, iron bearing formation and rock assemblage, combining with metallogenic regularity, the low and slow magnetic anomaly area with banded type distributed widely in Liangshan area is suitalbe location for searching for hideen iron ore bodies.
The study area is located at the west of Dongping-Wenshang iron ore belt in western Shandong province. It is low magnetic anomaly area. By means of high magnetic measurement, Inaka Mi component magnetic measurement and drilling verification, one iron deposit has been found in low magnetic anomaly area. It is a banded iron formation(BIF) type iron deposit. The underlying strata in this area are mainly Shancaoyu formation in new Archean Taishan rock group. The lithology is biotite granulite, accompanying with magnetite quartzite and magnetite hornblende quartzite. Major mineral compositions are magnetite, pyrite and chalcopyrite. Shancaoyu formation is widely distributed in the study area. According to metallogenic epoch, ore bearing horizon, iron bearing formation and rock assemblage, combining with metallogenic regularity, the low and slow magnetic anomaly area with banded type distributed widely in Liangshan area is suitalbe location for searching for hideen iron ore bodies.
引文
[1]张连昌,翟明国,万渝生,等.华北克拉通前寒武BIF铁矿研究:进展与问题[J].岩石学报,2012,28(11):3431-3444.
[2]万渝生,董春燕,颉颃强,等.华北克拉通早前寒武条带状铁矿建造形成时代---SHRIMP锆石U-Pb定年[J].地质学报,2012,86(9):1447-1478.
[3]万渝生,刘敦一,王世进,等.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.
[4]苏旭亮,王刚,王春,等.安丘-莱州地区低缓磁异常带铁矿找矿前景分析[J].山东国土资源,2012,28(12):24-34.
[5]黄太岭,高建国.山东省区域地球物理场[J].山东地质,2002,18(3-4):88-94.
[6]胡伟.鲁西地区航次特征及其反映的地质意义[J].中国煤炭地质,2016,28(7):52-68.
[7]张旭,甘延景,梁栋彬,等.高精度重力磁法在苍山县沟西铁矿勘查中的应用[J].山东国土资源,2009,25(11):28-33.
[8]王继芳,徐然.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.
[9]张国权.山东省东平-汶上地区铁矿带成矿规律及成矿预测[D].北京:中国地质大学(北京),2015:69-71.
[10]宋明春,李培远,熊玉新,等.山东省济宁强磁异常区深部铁矿初步验证及其意义[J].地质学报,2008,82(9):1285-1292.
[11]郝兴中,杨毅恒,李英平,等.山东成武-曹县地区磁异常特征及铁矿预测[J].地球物理学进展,2018,33(2):1-11.
[12]张英梅.山东省东平-汶上地区铁矿床地质特征及成矿模式[J].山东国土资源,2018,34(4):8-13.
[13]吴志国,刘宝华,李毅,等.抚顺地区低缓磁异常及找矿方向探讨[J].吉林地质,2018,37(1):62-65.
[14]张增奇,张成基,王世进,等.山东省地层侵入岩构造单元划分对比意见[J].山东国土资源,2014,30(3):1-23.
[2]万渝生,董春燕,颉颃强,等.华北克拉通早前寒武条带状铁矿建造形成时代---SHRIMP锆石U-Pb定年[J].地质学报,2012,86(9):1447-1478.
[3]万渝生,刘敦一,王世进,等.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.
[4]苏旭亮,王刚,王春,等.安丘-莱州地区低缓磁异常带铁矿找矿前景分析[J].山东国土资源,2012,28(12):24-34.
[5]黄太岭,高建国.山东省区域地球物理场[J].山东地质,2002,18(3-4):88-94.
[6]胡伟.鲁西地区航次特征及其反映的地质意义[J].中国煤炭地质,2016,28(7):52-68.
[7]张旭,甘延景,梁栋彬,等.高精度重力磁法在苍山县沟西铁矿勘查中的应用[J].山东国土资源,2009,25(11):28-33.
[8]王继芳,徐然.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.
[9]张国权.山东省东平-汶上地区铁矿带成矿规律及成矿预测[D].北京:中国地质大学(北京),2015:69-71.
[10]宋明春,李培远,熊玉新,等.山东省济宁强磁异常区深部铁矿初步验证及其意义[J].地质学报,2008,82(9):1285-1292.
[11]郝兴中,杨毅恒,李英平,等.山东成武-曹县地区磁异常特征及铁矿预测[J].地球物理学进展,2018,33(2):1-11.
[12]张英梅.山东省东平-汶上地区铁矿床地质特征及成矿模式[J].山东国土资源,2018,34(4):8-13.
[13]吴志国,刘宝华,李毅,等.抚顺地区低缓磁异常及找矿方向探讨[J].吉林地质,2018,37(1):62-65.
[14]张增奇,张成基,王世进,等.山东省地层侵入岩构造单元划分对比意见[J].山东国土资源,2014,30(3):1-23.