黄金科学技术
黃金科學技術
황금과학기술
GOLD SCIENCE AND TECHNOLOGY
2014年
4期
45-49
,共5页
侯江龙%牛树银%孙爱群%孙保花%李强峰
侯江龍%牛樹銀%孫愛群%孫保花%李彊峰
후강룡%우수은%손애군%손보화%리강봉
亚热柱%幔枝构造%构造控矿%郯庐断裂%胶东地区
亞熱柱%幔枝構造%構造控礦%郯廬斷裂%膠東地區
아열주%만지구조%구조공광%담려단렬%효동지구
sub-mantle plume%mantle branch structure%structure ore-controlling%Tanlu fault%Jiaodong area
胶东地区是我国现今最重要的金矿集中区,金矿的产出总体受胶东地区几条主干断裂构造的控制。纵观胶东地区金矿数量及规模,发现胶东地区金矿分布存在不均衡性,表现为大型、特大型金矿床相对集中在胶西北地区,而胶东南地区金矿规模则相对较小。结合胶东地区区域构造背景、地层出露及构造展布特征,认为胶东地区金矿分布不均衡受幔枝构造控制,由于胶西北地处华北东部地幔热柱中心部位,自然成为最有利的成矿集中区。
膠東地區是我國現今最重要的金礦集中區,金礦的產齣總體受膠東地區幾條主榦斷裂構造的控製。縱觀膠東地區金礦數量及規模,髮現膠東地區金礦分佈存在不均衡性,錶現為大型、特大型金礦床相對集中在膠西北地區,而膠東南地區金礦規模則相對較小。結閤膠東地區區域構造揹景、地層齣露及構造展佈特徵,認為膠東地區金礦分佈不均衡受幔枝構造控製,由于膠西北地處華北東部地幔熱柱中心部位,自然成為最有利的成礦集中區。
효동지구시아국현금최중요적금광집중구,금광적산출총체수효동지구궤조주간단렬구조적공제。종관효동지구금광수량급규모,발현효동지구금광분포존재불균형성,표현위대형、특대형금광상상대집중재효서북지구,이효동남지구금광규모칙상대교소。결합효동지구구역구조배경、지층출로급구조전포특정,인위효동지구금광분포불균형수만지구조공제,유우효서북지처화북동부지만열주중심부위,자연성위최유리적성광집중구。
Jiaodong is one of the most important gold producing area of China,the output of gold in Jiaodong area is generally controlled by some specific faults.Throughout the number and size of gold deposits in Jiaodong area, we discovered the distribution of gold deposits in Jiaodong area is uneven,large and superlarge gold deposits basically focus on northwestern Jiaodong area,the scale of gold deposits in southeast of Jiaodong area is relatively small.Combined with the regional tectonic background of Jiaodong area,the outcrop of strata and the characteristics of tectonic distribution,we consider that the uneven distribution of gold deposits in Jiaodong area is controlled by mantle branch structure,due to the northwest of Jiaodong area located in the center of mantle plume in eastern of North China,it becomes the most advantageous gold metallogenic concentration area.