摘要
属于扬子地台基底的黄陵断隆北部太古界混合奥长花岗岩及其残留围岩——王家湾群所组成的地体,是一个遭受了斜长角闪岩相变质的花岗岩-绿岩地体。本区上太古界酸性侵入岩体是白岗岩-奥长花岗岩套(AT岩套)。绿岩带中的超镁铁质岩是含SiO_2稍高的辉岩质科马提岩。
Huangling block belongs to the basement complex of the Yangtze platform. The Archean terrain in the northern Huangling block is composed of the trondhjemites with residual adjoining rocks-Wangjiawan group, which was a granite-grenstone terrain,underwent amphibolite facies metamorphism.
These Archean acidic intrusive bodies belong to the alaskite-trondhjemite suites (A-T suites),and ultramafic rocks in the Archean greenston belts belong to the pyroxenic komatiites.
出处
《矿物岩石》
CAS
CSCD
1993年第1期5-13,共9页
Mineralogy and Petrology
基金
国家自然科学基金委员会资助项目(项目代号 No.4860089)
关键词
花岗岩
绿岩
地体
太古界
Huangling block
Archean
granite-greenstone terrain
alaskite-trondhjemite suites
greenstone belts
ultramafic rocks
pyroxenic komatiite
