GENETIC TYPES AND GEOCHEMICAL-PECULIARITIES OF MANTLE CRUSTAL CARBONATITE GENETIC ROCK SERIES

被引：0
|
作者：
BORODIN, LS
机构：
来源：
GEOKHIMIYA | 1994年 / 12期
关键词：
D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The geochemical peculiarities of carbonatites and the regularities of ore concentration in alkaline-carbonatite complexes are considered at the base of new petrogenetic model. According to the model the carbonatites are considered as final products of mantle/crustal fluid-magmatic systems. Along with mantle magmatic differentiation the carbonatitic components are accumulated in metamagmatic processes i.e. carbonatisation and alkali advent as a result of carbon dioxide flux from mantle/crust and meteoric sources. General classification of carbonatite-alkaline rock series is presented based on alkaline-carbonatite complexes of Europe, America, Africa and India. The concentration factors of rare metals (Nb, TR etc) are considered in concern with open or closed type of a system, abyssal level and metasomatic process scale.
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页码：1683 / 1692
页数：10
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