河南科学
河南科學
하남과학
HENAN SCIENCE
2015年
7期
1199-1205
,共7页
徐春华%纪瑞元%郭文杰%张宏宾%刘红
徐春華%紀瑞元%郭文傑%張宏賓%劉紅
서춘화%기서원%곽문걸%장굉빈%류홍
剪切带%构造叠加%金成矿作用%成矿预测
剪切帶%構造疊加%金成礦作用%成礦預測
전절대%구조첩가%금성광작용%성광예측
shear zone%structures superimposed%gold mineralization%ore-prediction
韧性剪切带是地壳中深层次呈带状展布的高应变的韧性断层。韧性剪切带型金矿是一种非常重要的金矿床类型。以卡拉麦里断裂带附近发现的与韧性剪切带型相关的金矿床(金矿点)为研究对象,解剖了韧性剪切带的成矿特征研究,主要从剪切带的构造成因机制、组构特征、剪切带的变形与成矿的关系、金矿与剪切带的关系、成矿模式与成矿预测做了一个深入的分析。大型深剪切断裂应变特征和构造演化控制着金的成矿作用,成矿流体具有多源性,构造叠加和区域构造转换在剪切带长期演化过程中,使得成矿作用具有多期性和复杂性,多种有利累加效应使得成矿作用规模不断提高,从而形成大型剪切金矿带或金矿集中区。
韌性剪切帶是地殼中深層次呈帶狀展佈的高應變的韌性斷層。韌性剪切帶型金礦是一種非常重要的金礦床類型。以卡拉麥裏斷裂帶附近髮現的與韌性剪切帶型相關的金礦床(金礦點)為研究對象,解剖瞭韌性剪切帶的成礦特徵研究,主要從剪切帶的構造成因機製、組構特徵、剪切帶的變形與成礦的關繫、金礦與剪切帶的關繫、成礦模式與成礦預測做瞭一箇深入的分析。大型深剪切斷裂應變特徵和構造縯化控製著金的成礦作用,成礦流體具有多源性,構造疊加和區域構造轉換在剪切帶長期縯化過程中,使得成礦作用具有多期性和複雜性,多種有利纍加效應使得成礦作用規模不斷提高,從而形成大型剪切金礦帶或金礦集中區。
인성전절대시지각중심층차정대상전포적고응변적인성단층。인성전절대형금광시일충비상중요적금광상류형。이잡랍맥리단렬대부근발현적여인성전절대형상관적금광상(금광점)위연구대상,해부료인성전절대적성광특정연구,주요종전절대적구조성인궤제、조구특정、전절대적변형여성광적관계、금광여전절대적관계、성광모식여성광예측주료일개심입적분석。대형심전절단렬응변특정화구조연화공제착금적성광작용,성광류체구유다원성,구조첩가화구역구조전환재전절대장기연화과정중,사득성광작용구유다기성화복잡성,다충유리루가효응사득성광작용규모불단제고,종이형성대형전절금광대혹금광집중구。
Ductile shear zone are toughness fault in the crust with deep zonal distribution and high strain. The ductile shear zone gold deposit is an important type of gold deposit. Taking Kalamaili-fault gold deposits(ore point)related to ductile shear zone type as object,we studied the metallogenic characteristics of ductile shear zone, mainly from the structure of shear band formation mechanism,the characteristics of fabric,the relationship between deformation and mineralization of shear zone,and the relationship among shear zone,ore-forming model and metallogenic prediction. The strain characteristics and tectonic evolution of large deep shear fracture controlled the gold mineralization. The ore-forming fluid has the polyphyly,and the structural superposition and regional tectonic transformation in the shear zone long-term evolution process,lead to multiphase mineralization and complexity. The variety of the cumulative effect makes mineralization scale increasing,forming a large shear belt or gold clusters.