克拉通破坏成矿理论应用和示范验证—以华北克拉通南缘卢氏金多金属矿集区为例

The Major Research Plan of Destruction of the North China craton have achieved a series of great research results, the Decratonic Metallogenic Theory and the Decratonic gold depoist is one of the results. However, the validity and widespread applicability of this new knowledge are still need to be continuous verification and perfection. This project will develop the studies of the application of the Decratonic Metallogenic Theory and demonstration validation in Lushi gold-polymetal mineralization area, southern margin of North China craton. The study works for lode gold, skarn Fe-Cu, and porphyry-skarn Mo-W deposits include metallogenic geodynamic setting, ore-forming structures, ore-forming fluids, and so on. The aim is to find out the nature and the ore-controlling action of the faults, and the nature and source of ore-forming fluid, furtherly discuss the contribution of the mantle fluid for the mineralization. Basing on the integrated research, we will build the metallogenic and exploration models of the Decratonic deposits to carry out the large scale ore prediction, and we also will design the drilling engineering to test and verify. The project will validate and perfect the Decratonic Metallogenic Theory system by both aspects of theory study and exploration ore practice. The project will also provide the important evidences for fluid metallogenesis during the decratonic process. This study has important theory and practical significance.

华北克拉通破坏重大研究计划研究取得一系列重大研究成果，成果之一就是提出了克拉通破坏成矿理论及克拉通破坏型金矿床的新认识。然而，这些新认识的正确性和普遍适用性还需要得到不断的验证和完善。本研究选择华北克拉通南缘卢氏金多金属矿集区开展克拉通破坏成矿理论应用和示范验证，对区内脉型金矿、矽卡岩型铁铜矿、斑岩-矽卡岩型钼钨矿等开展成矿动力学背景、成矿构造、成矿流体等方面研究工作，查明成矿构造性质及控矿作用、成矿流体性质及来源，探讨地幔流体对成矿的贡献; 在综合研究基础上，建立克拉通破坏型矿床的成矿与找矿模型，开展大比例尺找矿预测，设计钻探工程验证，从理论研究和找矿勘查实践两个方面验证并拓展完善“克拉通破坏成矿理论体系”。为全面深入地认识“克拉通破坏”这一重大地球动力学过程中的流体成矿作用提供重要证据。该项研究即有重要的理论意义，又具有实践意义。