地质与资源2019，Vol.28Issue(2)：119-127,9.
饶河杂岩中枕状玄武岩的锆石U-Pb年代学、地球化学及其地质意义
ZIRCON U-Pb CHRONOLOGY AND GEOCHEMISTRY OF THE PILLOW BASALTS FROM RAOHE COMPLEX: Geological Implications
摘要
Abstract
As one of the most reliable geological records of Paleo-Pacific Plate subduction in eastern China,the Nadanhada accretionary comPlex is of great imPortance to define the westward subduction of Paleo-oceanic Plate. The Raohe ComPlex is located in the core of the comPlex,develoPed with tyPical accretionary comPlex association,among which the basaltoids,mostly in structural lenticles,are occurred in the ultramafic-mafic comPlex zone with slight deformation but no metamorPhism. Study on the isotoPic chronology and geochemistry of the Pillow basalt samPles from Raohe ComPlex shows that the LA-ICP-MS zircon U-Pb age is Middle Jurassic (168±2 Ma),with dePletion of LILEs (Rb and Sr),enrichment of HFSEs (Nb and Ta) and high-abundant Th,which was formed in the ocean island environment(OIB). Its formation age and genetic environment is significant to study the tectonic dynamic background of the area during the Jurassic Period.关键词
饶河杂岩/枕状玄武岩/锆石U-Pb年代学/地球化学/黑龙江省Key words
Raohe ComPlex/Pillow basalt/zircon U-Pb chronology/geochemistry/Heilongjiang Province分类
天文与地球科学引用本文复制引用
曾振,孙雷,张兴洲,崔维龙,蒋力..饶河杂岩中枕状玄武岩的锆石U-Pb年代学、地球化学及其地质意义[J].地质与资源,2019,28(2):119-127,9.基金项目
国家自然科学基金重点项目"兴蒙海槽晚古生代构造演化"(编号 40739905) （编号 40739905）
中国地质调查局项目"黑龙江省东部隐伏盆地页岩气地质条件综合调查"(编号 1212011120973) （编号 1212011120973）
"松辽外围西部盆地油气基础地质调查"(编号 DD20160163). （编号 DD20160163）
