黑龙江科技大学学报2018，Vol.28Issue(1)：25-29,5.DOI:10.3969/j.issn.2095-7262.2018.01.005
老爷岭地区早白垩世二长花岗岩的地球化学特征及成因
Geochemical characteristics of Early Cretaceous monzonitic granite from Laoye Ridge and its petrogenesis
王春宇 1王东彬1
作者信息
- 1. 黑龙江科技大学矿业工程学院,哈尔滨150022
- 折叠
摘要
Abstract
The paper is concerned with an attempt to determine the Petrogenesis and tectonic envi -ronment of Early Cretaceous monzonitic granite from Laoye Ridge in eastern Heilongjiang.The determina-tion involves an insight into the chronology and geochemistry of Early Cretaceous monzonitic granite ;the study of chronology using U-Pb method;and the study of geochemistry—testing major , rare and trace ele-ments of monzonitic granite samples—by the data analysis which can determine the tectonic environment. The results reveal that monzonitic granites aged 128.20 ±0.49 Ma which formed during the Early Creta-ceous have a higher content of rock and whole alkali, classified as I type granites forming due to the par-tial melting of crustal material; and Early Cretaceous monzonitic granite formed in a continental margin environment related to the subduction-strikeslip of Paleo-Pacific Plate.The research may provide the basis for the study of the formation and evolution of granite in Laoye Ridge.关键词
二长花岗岩/U-Pb年龄/地球化学Key words
monzonitic granite/U-Pb age/geochemistry分类
天文与地球科学引用本文复制引用
王春宇,王东彬..老爷岭地区早白垩世二长花岗岩的地球化学特征及成因[J].黑龙江科技大学学报,2018,28(1):25-29,5.
