地质与资源2018，Vol.27Issue(3)：209-217,256,10.
华北克拉通北缘东段"开原岩群"的解体及重新认识
DISINTEGRATION AND REUNDERSTANDING OF THE"KAIYUAN ROCK GROUP" IN THE EAST SECTION OF THE NORTHERN MARGIN OF NORTH CHINA CRATON
摘要
Abstract
According to recently obtained isochronologic data, the authors have a new understanding of the tectonic metamorphic rock series, formerly known as"Kaiyuan rock group" or"Qinghezhen rock group", in northern Liaoning Province, and redefine it as Qinghe tectonic melange. It consists of the Mesoarchean, Neoarchean and Mesoproterozoic rocks from North China Craton, and also the Neoproterozoic and Permian rocks from Xing'an-Mongolian orogenic belt with various tectonic conditions. The original Shenjiapuzi rock formation is redivided into Neoarchean metamorphic supracrustal rocks and Meso-Neoarchean metamorphic plutonic rocks; while the original Zhaobeishan rock formation into Neoproterozoic Nanping slices and Late Permian Zhaobeishan rock formation. The original Banshigou rock formation (or Lujiapuzi rock formation) is redefined as Mesoproterozoic Shimen rock formation. The original Tongjiatun rock formation and Jianshanzi volcanic rock are combined into the Late Permian Tongjiatun rock formation. Finally, the authors suggest that the Qinghe tectonic melange belt be the boundary between North China Craton and Xing'an-Mongolian orogenic belt, and the final closing time of Paleo-Asian Ocean in the east section of northern margin of North China plate should be the early Middle Triassic(ca. 245 Ma).关键词
华北克拉通/兴蒙造山带/古亚洲洋闭合/开原岩群/构造混杂岩/辽北地区Key words
North China Craton/Xing'an-Mongolian orogenic belt/closure of the Paleo-Asian Ocean/Kaiyuan rock group/tectonic melange/northern Liaoning Province分类
天文与地球科学引用本文复制引用
赵辰,巩恩普,刘锦,宋淑娥,彭游博,崔育菘..华北克拉通北缘东段"开原岩群"的解体及重新认识[J].地质与资源,2018,27(3):209-217,256,10.基金项目
中国地质调查局"辽东-吉南成矿带永吉-凤城地区地质矿产调查"项目(编号DD20160049) （编号DD20160049）
"辽宁1∶5万卧龙泉、李家堡子、万福庄、三道沟幅区域地质矿产调查"项目(编号DD20160049-7). （编号DD20160049-7）
