华北中、新元古代地层沉积时代和地层格架的确立，是完善华北元古宙层型剖面、厘定中-新元古代地质事件、探讨华北克拉通元古宙地质演化以及与全球构造联系的关键地质问题。本项目选择辽东半岛南部发育良好的新元古代沉积地层为研究对象，在野外工作的基础上，采用SIMS和LA-ICPMS微区同位素分析技术对不同成因的副矿物进行原位微区U-Pb和Pb-Pb定年工作：（1）火山岩、火山碎屑岩中岩浆锆石和岩浆榍石；（2）侵入地层的岩浆岩中的岩浆锆石和斜锆石；（3）碎屑岩中的碎屑锆石和碎屑榍石；（4）碎屑岩中沉积自生磷钇矿。通过上述精细的年代学研究工作厘定地层的沉积时代，从而建立该区地层年代学格架。并通过与华北蓟县中、新元古代层型剖面的对比，为完善华北中-新元古代地层年代格架提供可靠的同位素年代学依据。

The determination of sedimentation time and establishing framework of the Meso- to Neoproterozoic strata in the North China Craton is a key issue to shed light on Proterozoic stratotype section, and Proterozioc geological evolution of the NCC, and as well the relationship between the NCC and the supercontinents. This project aims to determine the sedimentary ages of the (Meso-) Neoproterozioc strata in south part of the Liaodong Peninsula by methods of SIMS, LA-ICP-MS U-Pb and Pb-Pb chronological study of accessory minerals, such as magmatic zircon and titanite in volcanic rocks and pyroclastic rocks, magmatic zircon and baddeleyite in igneous rocks which intrude the strata, and detrital minerals of zircon, titanite and diagenetic xenotime in clastic rocks. Our new age data might be benefit for building framework of the Proterozoic strata in south part of the Liaodong Penisula.