| 杨敏之,黄国君,张民.冀北含银岩石建造、区域地球化学特征及成矿预测[J].地质找矿论丛,2000,(2):97-109 |
| 冀北含银岩石建造、区域地球化学特征及成矿预测 |
| REGIONAL GEOCHEMICAL FEATURE OF Ag-BEARING ROCK FORMATIONS AND Ag DEPOSIT PREDICTION IN JIBEI AREA |
| 投稿时间：2000-03-07 |
| DOI：10.6053/j.issn.1001-1412.2000.2. 001 |
| 中文关键词: 含银岩石建造类型 区域地球化学特征 区域成矿模式 成矿远景预测区 |
| 英文关键词:Ag-bearing rock formation type regional geochemical feature regional metallogenic model predicted prospects Jibei area |
| 基金项目:国家自然科学基金项目(批准号49273174)资助 |
|
| 摘要点击次数: 1334 |
| 全文下载次数: 1695 |
| 中文摘要: |
| 从构造地质位置、岩石类型、岩石学、岩石化学、含银丰度、区域展布等方面,确定了冀北存在有3种含银岩石建造类型(1.古元古代含银变质岩建造;2.中元古代高于庄期含银碳酸盐岩建造;3.中生代晚侏罗世张家口期含银火山岩建造)。基于各含银岩石建造内Ag,Au,Cu,Pb,Zn,Mn,W,Ni,Sn,Cr,B,Ti,V,Mo,Co等15个元素的化学定量分析,R型聚类分析、因子分析和相关矩阵分析,明确了冀北含银岩石建造的区域地球化学特征。从区域地质发展史、地层层序、同位素年代学、构造-变质-岩浆-火山作用、银矿成矿作用的演化上,建立了冀北含银岩石建造的区域成矿模式。提出6个银矿成矿远景区。 |
| 英文摘要: |
| Based on geotectonic postion, rock types, petrology, petrochemistry, Ag abundance and regional distribution etc., Ag-bearing formations in Jibei area are divided into (1)Palaeo-Proterozoic metamorphic rock formation; (2)Middle Proterovoic carbonate rock formation of Gaoyuzhuang stage; (3)Mesozoic volcanic rock formation of Zhangjiakou period, Late Jurassic period of Zhangjiakou stage. Regiomal geochenical feature of the formations are revealed by 15 elements′(Ag,Au,Cu,Pb,Zn,Mn,W,Ni,Sn,Cr,B,Ti,V,Mo,Co) quantitative anatysis, R-type cluster analysis, factor analysis and correlative matrix analysis. Regional metallogenic model for the formations is established according to researches on the regional geological history, stratgraphic sequency, isotopic chronology and the combination of tectonics-metamorphism-magmatism-volcanism. Silver ore prospects are predicted. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
