强烈的塑性变形使华北地台东北部太古宙鞍山群中的吉林板石沟铁矿发生强烈的构造置换;造成原始仅有二三层的铁矿褶皱重复,在X(包络线)、Y(枢纽线)方向均被拉断,形成透镜状的复式褶皱勾状体。现有的19个矿组均为这种复式褶皱的转折端,并多呈“Z”型不对称形式。根据以上控矿规律本文提出两个找矿方向,一是包络线方向,另一是枢纽线方向,对1、3矿组具体地做了勘探设计。目前本文的勘探设计已得到勘探验证,新增铁矿储量数千万吨。 The intense plastic deformation resulted in a strong structural replacement of the Jilin-Shekanggou iron deposit in the Archean Anshan Group in the northeastern North China Platform. As a result, the iron folds with only two or three primitive layers were repeated. The X (envelope), Y (Hinge line) are pulled off the direction of the formation of a lenticular double folding hook body. The existing 19 mines are the turning points of this compound folds and are mostly in the “Z” asymmetric form. According to the above ore-controlling rules, this paper proposes two prospecting directions: one is the direction of the envelope and the other is the direction of the hinge line. At present, the exploration design of this paper has been verified by exploration, adding tens of millions of new iron ore reserves.