论文部分内容阅读
本文分析了凤凰山矿田构造复合时序，厘定出Ｄ４及Ｄ５两期构造变形作用为主要的成岩成矿构造，确定了区内成矿构造应力场的最大剪应力方向为ＮＮＥ向。在此基础上，建立数值模型，进行同成矿构造应力场的数学模拟。初步得出，矿田内岩体接触带边缘及两侧的韧性剪切带为应力、应变及变形能的异常密集处，在多组构造复合处应力得以调整形成应力低，有利成矿部位必须对应剪应力变化梯度较大处，在此基础上，进行了成矿预测。
This paper analyzes the tectonic compositional sequence of the Fenghuangshan orefield and determines the tectonic deformation of the D4 and D5 phases as the major diagenetic and ore-forming structures. The maximum shear stress direction of the ore-forming tectonic stress field in the area is determined to be NNE direction. Based on this, a numerical model is established to simulate the tectonic stress field of the igneous zone. It is concluded that the stress and strain and deformation energy are intensively distributed at the edge of the contact zone and the ductile shear zones on both sides of the contact zone in the ore field. The stress is adjusted to form a low stress in the multiple sets of structural complexes. The favorable metallogenic parts must correspond to On the basis of this, the ore-forming prediction is carried out.