地质学论文供参习.doc

No. 毕 业 论 文 题 目： 延边红太平多金属矿区韧性剪切带特征及 控矿作用 学 生 姓 名 专 业 区域地质调查及矿产普查 班 级 指 导 教 师 2011 年 5 月 14 日摘 要 延边地区红太平多金属矿的成因一直以来被认为是火山热液矿床或火山喷气矿床。作者通过野外调查及综合研究发现，其中所谓的“变质火山岩及火山碎屑岩”其实为一套强变形的陆源碎屑岩，主要岩石类型有变形砾岩、绢云片岩、绢云千枚岩，形成宽度50—400m的构造变形带。变形的砾岩原岩为山谷旗组砾岩，后两者原岩为滩前组粉砂岩、粉砂质泥岩，构造变形带的产状与地层及矿体产状基本一致，具有顺层的特点。红太平多金属矿体产在变形带下盘庙岭组中，矿石及围岩也具有一定的变形构造，如褶叠层构造、剪切页理等。因此这一矿床的成因为韧性剪切带型，层构造控矿。 关健词： 韧性剪切带 陆源碎屑岩 矿床成因 红太平多金属矿 Pick to Taiping polymetallic deposit in yanbian area causes of red has long been regarded as volcanic hydrothermal gold deposit or volcanic jet ore deposits. The author according to the field investigation and comprehensive study found, including so-called metamorphic volcanic rocks and volcanic elastic rocks, actually is a series of clastic rock strong deformation, main rock types have deformation conglomerate, silk cloud schist, silk cloud formation, rocks, thousands of pieces of width 50 - with 400m tectonic deformation. Deformation conglomerate protolith conglomerate, the flag for the valley of both the original rock for beach after former group of silty sandstone, silty mudstones, with yield of tectonic deformation and ore body and formation in shape of consistent with (, the characteristics of the layer. Red taiping polymetallic ore body produces in the deformation in the group with footwall temple ridge, ore and rock also has a certain deformation structure, such as plait laminated structure, shear page Richard, etc. So this deposit into because of ductile shear zone type, layer structure ore-controlling. Key words: Ductile shear zone Clastic rock The genesis Red taiping polymetallic deposit  目 录 引言……………………………………………………………………….1 第一章、区域地质概况……………………………………………………...2 第一节、地层………………………………………………………………………….2 第二节、侵入岩3 第三节、区域构造4 第二章、矿体及蚀变岩特征………………………………………………………………5 第三章、矿区韧性剪切带特征………………………………………………..6 第四章、韧性剪切带对矿体的控制作用……………………………………….8 图版