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期刊论文

A PRELIMINARY APPROACH TO THE GEOTEC-TONIC EVOLUTION HISTORY AND MINERLIZA-TION IN VICTORIA, AUSTRALIA

戴塔根DAI Ta-gen and CHEN Gua-da

seotectonica et metallogenia Volume 25, Number 1-2 Pages 37-44, 2001, Oct., 2001,-0001,():

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摘要/描述

According to the available data and field rescarch, based on the diwa thcory, the autbors have studied the geotcclonic evolution history and the associated inerlizaton in the Victoria area,It has been shown that this area is in fact a part of the Lachlan diwa region, The Victoria area can be divided into geodome fauit-fold zone and subsidence zone.The former can be subdivided into three zones. From west to east. Which are western uplift zone central depression zone and castern uplift zone. From west to east. Which are western uplift zone. Central depression zone and eastern ulift zone. The evolution history of the Victoria area be divided into four stages-Pregosyn cline.geosyncline. Plateform and diwa. Each stage has distinct sedimentary magmatic and strue-tural features. Of the four stages, diwa stage is the most important for minerlization. Diwa stage started in the Devonisn. During the development of diwa.a number of granites. Which are charac-terized by high SiO2 and Na: O+K2O2, were formed. The granites were abundance with mineral-forming material On the other hand. Diwa geoteetonism reformed and enrieched the geosynelinal or platform ore deposits. Therefore, most of the ore deposits that occurred in the Victoria area are, more or less, related with diwa tectonism

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