CAJ | 학술논문

大牛地区铁矿位于汶上东平铁矿成矿带中北部。区内第四系广布，以临沂组为主，含矿地层为隐伏新太古代泰山岩群山草峪组磁铁角闪石英岩。基底构造线方向为NW 310°，褶皱构造、断裂构造均较发育，其规模不等，矿体受一定程度破坏。矿石自然类型为细粒条带状、条纹状磁铁角闪石英岩型，一般与顶底板岩石（黑云变粒岩）界线分明，沿走向与倾向常见夹石（层）且具分支复合现象，总体属有限延伸的板状矿体，主要控矿因素为地层、区域构造和区域变质作用，成矿类型为沉积变质型铁矿。
대우지구철광위우문상동평철광성광대중북부。구내제사계엄포，이림기조위주，함광지층위은복신태고대태산암군산초욕조자철각섬석영암。기저구조선방향위NW 310°，습추구조、단렬구조균교발육，기규모불등，광체수일정정도파배。광석자연류형위세립조대상、조문상자철각섬석영암형，일반여정저판암석（흑운변립암）계선분명，연주향여경향상견협석（층）차구분지복합현상，총체속유한연신적판상광체，주요공광인소위지층、구역구조화구역변질작용，성광류형위침적변질형철광。
Iron deposit in Daniu area locates in middle and north part of Wenshang Dongping belt. Quaternary strata are widely distributed in this area, and Linyi group is its major strata. Its Ore bearing strata are magnetite amphibolite quartzite in Shancaoyu formation of hidden late Archean Taishan group. The basement tectonic line is 310 °with the trend of northwest. Folds and faults developed well. Its sizes are unequal, and the ore bodies are damaged in certain degree. The natural types of ores are fine grain strip and strip shaped magnet amphibolite quartz?ite. The top rocks and the bottom rocks ( biotite granulite) have a clear boundary. Dunn bass and complex can be seen along the trend and tendency. It is a finite stretched tabular deposit in general. Major ore controlling factors are strata, regional structures and regional metamorphism. It is a metamorphic sedimentary iron deposit.