Metadata
Author: Giga-fren
Data
English[en]
During the final stage (1.95–1.70 Ga), enclosure and orogenesis of the paleorift system took place; these events were accompanied by extensive development of mixed mantle–crustal and crustal sources, the formation of calc-alkaline volcanic and sedimentary orogenic associations, and the emplacement of P–Ti-bearing alkaline gabbro – nepheline syenite and U – Mo-bearing monzonite–granodiorite intrusions.
French[fr]
Durant le stade terminal (1,95–1,70 Ga), il y a eu fermeture et orogenèse du système de paléorift; ces événements furent accompagnés de la formation abondante de magmas mélangés provenant du manteau–croûte et de la croûte, et de la formation des associations orogéniques calco-alcalines volcaniques et sédimentaires, de la mise en place de gabbro alcalin – syénite à néphéline contenant P–Ti, et des intrusions de monzonite–granodiorite contenant U – Mo.