火山沉积建造——最重要的含锰建造

VOLCANIC SEDIMENTARY FORMATION──THE MOST IMPORTANT MANGANESE-BEARING FORMATION

本文根据沉积建造分析原理,提出了一个含锰沉积建造新的系统分类,并指出火山沉积建造的形成与地壳的破裂有关,控制含锰建造矿质来源的主要因素是板块构造活动引起的深成幔源热动力场。 我国地史上发育的含锰建造具有多旋回性、分区性。每次大的区域张裂活动之后和全球海平面上升阶段均有特定的含锰建造层的产出。把火山沉积建造作为最重要的含锰建造提出来,对于开辟新的研究思路和找矿方向具有重要的理论和实际意义。

The studies on the mineralization of mordern oceah floor and the origin of ancient manganese deposit have been revealing that volcanic activities and hypogene hot brine play very important role in the formation of commercial manganese deposit. Based on the sedi- men tary formation classification of the main manganese-bearing formation, it also points out that the forming of volcanic sedimentary formation, is related to the fracture of the crust; and that the main factors controlling the mineral sources of the manganese-bearing formation. are tectonic-mantle-derived thermal fields resulted from the plate tectonic ac- tivities. The manganese-bearing formation ever developed in China's geological history are multicyclic and divisional. Each regional macro-tensional taphrogeny is followed by the forming of manganese-bearing formation, in a specific stratum. That we put forward vol- canic sedimetary sequence as the most important manganese-bearing formation will direct us to open our munds in the study of mangenese mineralization and the prospecting of man- ganese deposits.