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为了探索无机成因CO2 成矿成藏的预测系统 ,选择松辽盆地北部为典型研究区 ,给定并探讨了CO2成矿成藏的六条预测原则和六项约束条件。其预测原则要求研究CO2 成矿成藏的构造环境、母源物质、动力因素、疏导通道、组织结构、演化序列等内容 ;其约束条件因地而异 ,需从壳内高导低速体、岩浆母源、多元动力、区域深断裂、拆离滑脱层、新构造制约等加以判别。从而区分出松辽盆地北部CO2 有利富集带 :北西西向和北北东向共轭断裂系CO2 富集带 ;讷河—五大连池断裂带CO2 富集带 ;近南北向隆起带CO2 富集带。初步认为 ,CO2 成矿成藏的构造环境离不开地幔上涌和壳内高导低速体的制约 ;母源物质离不开岩浆母源和碳酸盐岩的约束 ;动力因素是多元的 ;疏导途径与深断裂系统有关 ;气藏 (田 )结构与反转构造乃至区域拆离滑脱相关联 ;气藏 (田 )演化的最新调整与新构造运动相一致。
In order to explore the predicting system of inorganic mineralization of CO2 mineralization, the northern part of Songliao Basin is chosen as a typical study area. Six prediction principles and six constraints of CO2 mineralization are given and discussed. The prediction principle requires studying the tectonic environment, maternal material, dynamical factors, channeling, structure, and evolutionary sequence of CO2 ore-forming reservoir. The constraint conditions vary from low to high velocity bodies in the crust, Maternal sources, multivariate dynamics, deep regional faults, detachment and detachment of strata, and new tectonic constraints. So as to distinguish the CO2 enrichment zone in the northern part of the Songliao Basin from the CO2 enrichment zone in the NW and NWE conjugate fault systems, the CO2-rich zone in the Nehe-Wudalianchi fracture zone, and the CO2-rich zone in the NW uplift zone. It is preliminarily believed that the tectonic environment of CO2 mineralization is inseparable from the upwelling of mantle and the high velocity low velocity body in the crust. The maternal source can not be separated from the mafic parent and carbonate rocks. The dynamic factors are manifold. The channels of delineation are related to the deep-fault system; the gas field (Tian) structure is related to the inversion structure and regional detachment and detachment; and the latest adjustment of gas field (Tian) evolution is consistent with the neotectonic movement.