Tanlu Fault Zone and Gold Ore Metallogenesis

Tanlu Fault Zone (TFZ) is a large NE trending deep fracture system in East China and is about 2500 km long. It extends from the south of Lujiang to Tancheng, and passes through the Bohai Sea and continues to the north, where it branches into Yilan - Shulan Fault and Dunhua - Mishan Fault. TFZ is a long lasting huge deep - rooted lithospherical fault system with different characteristics in different parts and at different periods of its evolution. TFZ also controls the distribution and occurrences of many superlarge, large, middle and small sized gold ore deposits, e.g. Jiapigou, Haigou, Xiaoxinancha and Ciweigou gold deposits in Noaheast China; Linglong, Jiaojia, Sanshandao, Taishang, Xincheng, Rushan, and Pengjiakuang gold deposits in Jiaodong Peninsula of Shandong Province; and Guilaizhuang and Yinan in Western Shandong Province.

Discussion on the Source of Ore-forming Materials of the Yinan Gold Deposit,Shandong

Based on the main characteristics of the tectonic -magmatic evolution of region and Tanlu fault zone,we have discussed ore-bearing magmatic rocks petrochemistry,strontium and lead isotope,and the source of ore-forming materials in Yinan skarn deposit in this paper.The petrochemical features show that the ore-bearing magmatic rocks are calc-alkaline rocks of sub-alkaline series formed during

滁州地区铜金矿控矿构造特征及资源潜力浅析

滁州地区横跨桐柏—大别—苏鲁和长江中下游2个成矿带,是重要的铜、金成矿区。通过野外调研和典型矿床控矿分析,明确了郯庐深大断裂带、黄破断裂和管马断裂等主要断裂构造特征及区内控岩控矿构造特征。郯庐深大断裂带和黄破断裂是区内一级控岩控矿断裂,分别控制了北北东向和北东向构造-岩浆-成矿作用,一级断裂的次级构造、层间破碎带、褶皱伸展部位和断裂交汇部位等是重要的容矿构造。生产矿山实践表明,在已有矿山深边部,斑岩-矽卡岩型铜金矿和石英脉-构造蚀变岩型金矿的找矿潜力较大,是本区下一步地质找矿工作重点勘查和开发利用目标。

郯庐断裂与金矿成矿

郯庐断裂带是我国东部规模巨大的北东向断裂构造系 ,长约 2 5 0 0km。南起庐江至郯城 ,经渤海向北 ,分成伊兰—舒兰断裂和敦化—密山断裂。不同区域、不同时代具有不同特征。郯庐断裂控制了许多大型、中型和小型金矿分布 。

河南皮家寨金异常综合评价及找矿预测

皮家寨水系沉积物化探异常位于大别山北坡北淮阳构造带,受控于龟(山)-梅(山)断裂,综合异常区面积32km2,异常组分复杂,套合性较好,强度高。该异常区属于北淮阳凉亭金成矿带,是老湾金成矿带的东延部分。为了提升该地区的矿产地质研究程度、总结以前找矿成果、指导以后的找矿工作,作者对比老湾金矿的成矿模型、并运用韧性剪切带成矿的金矿成矿新理论,从区域成矿背景、地层、构造等几方面探讨了该金异常区的成矿条件,认为该异常区成矿地质条件优越,深部应具有较大的找矿潜力,并为该地区以后的矿产勘查工作指明了方向。

胶东中生代耦合金成矿作用分析

该文结合华北东部中生代构造体制转折、郯庐断裂带左行走滑和华北地幔热柱多级演化3次重大地质事件,对胶东金成矿原因进行系统分析,提出胶东中生代金矿同期耦合作用成因的观点,认为胶东金矿是上述三者同期耦合成矿作用的结果,且幔源成矿流体在耦合成矿过程中发生分异富集演化,使得胶东矿集区形成如此大规模、高品位和不均衡分布的金矿。

马超营断裂带区域地球化学特征

该文探讨了马超营断裂带内各地层的成矿元素丰度特征，阐述了该带内成矿元素的分布特征及分布规律，总结了Ａｕ及有关元素Ａｇ、Ｐｂ、Ｚｎ、Ｍｏ、Ｃｏ、Ｎｉ、Ｍｎ、Ｂａ、Ｓｒ、Ａｓ、Ｓｂ、Ｂｉ等异常的特征及其分布规律。研究成果表明：马超营断裂带的韧性—韧脆性剪切带是本区Ａｕ及与其相关的Ａｇ、Ｐｂ、Ｚｎ等成矿元素异常规模、形态和空间分布的控制因素。