地质调查与研究2016，Vol.39Issue(3)：177-183,7.
漠河盆地北部漠河组地层形成时代探讨--糜棱岩化微晶闪长岩LA-ICP-MS锆石U-Pb 年龄的制约
Discussion on sedimentary age of the Mohe formation in north area of Mohe basin：constraint of zircon LA-ICP-MS U-Pb geological age of biotite quartz diorite mylonite
摘要
Abstract
In the north area of the Mohe basin, there is mylonitized fine crystal biotite quartz diorite parallelly in-vading in the mylonitized sandstones. The research samples in this study are from the mylonitized fine crystal bio-tite quartz diorite. The weighted average age is 182.8±1.8 Ma by LA-ICP-MS of zircon U-Pb method. Combining with the characteristics of the fossil group of Phoenicopsis found in the Middle Jurassic, it is suggested that the Mohe formation is demarcated between the late period of early Jurassic to middle Jurassic. This result has impor-tant geological significance for the study on the tectonic genesis and evolution of the Mesozoic Mohe Basin from Mongolia Okhotsk orogenic belt.关键词
蒙古-鄂霍茨克造山带/漠河盆地/漠河组/锆石U-Pb 年龄Key words
Mongolia-Okhotsk orogenic belt/Mohe formation/Mohe basin/Zircon U-Pb age分类
地质学引用本文复制引用
赵书跃,韩彦东,张文龙,侯婷婷..漠河盆地北部漠河组地层形成时代探讨--糜棱岩化微晶闪长岩LA-ICP-MS锆石U-Pb 年龄的制约[J].地质调查与研究,2016,39(3):177-183,7.基金项目
中国地质调查项目“天然气水合物资源勘查与试采工程东北冻土区天然水合物资源勘查（GZHL20120302）” （）
