地质通报Issue(5)：606-613,8.
新疆塔里木北缘新元古代最晚期岩浆事件
The latest Neoproterozoic igneous activity on the northern margin of the Tarim Craton
摘要
Abstract
Zircon U-Pb dating reveals that the K-feldspar granite and granodiorite in Quruqtagh on the northern margin of the Tarim block crystallized at 630.1 ± 1.3Ma and 630.6 ± 1.3Ma, respectively. Zircon Hf isotopes indicate that these granitic rocks were mainly derived from partial melting of old andestic-basic crust with possible involvement of basaltic magma from mantle sources. Based on a comprehensive analysis of the Neoproterozoic igneous activities in Tarim, the authors argue that the 650~615Ma igneous rocks in Quruqtagh were the latest phase of the Neoproterozoic igneous activities and genetically related to the breakup of the Rodin-ia suppercontinent, i.e., they had nothing to do with the Pan-Africa orogeny. From Neoproterozoic to Cambrian, sedimentary se-quences in Quruqtagh exhibited typical sedimentation features on a passive continental margin, which indicates that the Tarim block had never incorporated into the Gondwana Land.关键词
塔里木/新元古代花岗岩/锆石U-Pb年龄/Hf同位素/构造意义Key words
Tarim/Neoproterozoic granites/zircon U-Pb ages/Hf isotope/tectonic implications分类
天文与地球科学引用本文复制引用
张传林,叶现韬,李怀坤..新疆塔里木北缘新元古代最晚期岩浆事件[J].地质通报,2014,(5):606-613,8.基金项目
国家自然科学基金项目 （）
