摘要
GEOTECTONIC BACKGROUND OF PYROPHYLLITE MINERALIZATIONAND ORE-BEARING VOLCANICFORMATION IN SOUTHEASTERNCOASTAL AREAS, CHINAWang Ling(Changsha Institute of Geotectonics, Academia Sinica, Changsha, 410013, Hunan, China)Liu Dongshen (Geologic Institute, National Construction Material Industry Bureau, 100010, Beijing, China)pyrophyllite, Diwa structure, nonmetallic metailogeny, ore-bearing forma-tion , the Sountheastern Coastal Areas, ChinaThe volcanic gas-liguid type of pyrophyllite deposits in the SoutheasternCoastal areas, China are the product of tectono-magama-volcanism in Diwa regions. The pyro-phyllite ore-bearing volcanic formation were formed in the maximum-mobility period of Diwa, which are mainly the Late Jurassic strata and are secondly the Early Cretaceous volcanic-sedi-mentary rock series strata. The lithology of the host rock is mainly rhyolitic crystal-vitric tuff, and the chemical composition is characterized by high silicon rich alumium and low iron, be-longing to the
The volcanic gas-liguid type of pyrophyllite deposits in the SoutheasternCoastal areas, China are the product of tectono-magama-volcanism in Diwa regions. The pyro-phyllite ore-bearing volcanic formation were formed in the maximum-mobility period of Diwa, which are mainly the Late Jurassic strata and are secondly the Early Cretaceous volcanic-sedi-mentary rock series strata. The lithology of the host rock is mainly rhyolitic crystal-vitric tuff, and the chemical composition is characterized by high silicon rich alumium and low iron, be-longing to the acid-intermediate-acid rock and the kalicalc-calc-alkalic series and the rhyo-lite-rhyodacite assemblage. They play an important role in the pyrophyllite mineralization.
基金
Supported by Hunan Province Science Foundation
