成都理工大学学报（自然科学版）Issue(3)：268-278,11.DOI:10.3969/j.issn.1671-9727.2015.03.02
冀北赤城红旗营子杂岩的地质特征及意义
Ceological characteristics and implication of Hongqiyingzi complex in Chicheng,North Hebei,China
摘要
Abstract
Using the field geological mapping,petrogeochemical analysis and isotopic dating,this paper inquires into the rock assemblage,tectonic setting,metamorphic evolution and geochronological characteristics of the Hongqiyingzi complex in Chicheng County,North Hebei,China to provide the basis for redividing the Hongqiyingzi Group.The Hongqiyingzi complex is mainly composed of the Yunzhou supracrustal rock with the lithology of garnet-biotite plagiogneiss,and the retrograded eclogite,serpentinite or serpentinized harzburgite and serpentinized olivine marble which occur as separate tectonic lenses in garnet-biotite plagiogneiss.They all underwent the regional amphibolite facies metamorphism during the Late Paleozoic (321~326 Ma B.P.).The protolith of garnet-biotite plagiogneiss may be the pelitic (pelitic-bearing)sandstone formed in the tectonic environment similar to continental island arc.Its deposition occurred in the Late Paleozoic (340~369 Ma B.P.),showing that the Yunzhou supracrustal rock is mainly the Late Paleozoic amphibolite facies metasedimentary rocks.The retrograded eclogite,serpentinite or serpentinized harzburgite and serpentinized olivine marble tectonic blocks may be the oceanic crust remnant,and related to subduction of Paleo-Asian Oceanic crust beneath the North China Craton during the Late Paleozoic.The rock assemblage, tectonic setting,metamorphic evolution and geochronological data of the Hongqiyingzi complex in Chicheng County is obviously different from that of the Hongqiyingzi Group in other areas,North Hebei Province,so the Hongqiyingzi Group in North Hebei area need to be redivided.关键词
表壳岩/洋壳残片/红旗营子杂岩Key words
supracrustal rock/oceanic crust remnant/Hongqiyingzi complex分类
天文与地球科学引用本文复制引用
刘瑶,倪志耀,孔旭,卢俊生,张静,刘胤..冀北赤城红旗营子杂岩的地质特征及意义[J].成都理工大学学报（自然科学版）,2015,(3):268-278,11.基金项目
国家自然科学基金资助项目（41272087，41072050，40472041）。 （）
