• 责任者：Wang Min (China University of Geosciences ; Beijing 100083 ; China) ; Dai Chuangu
• 刊名：Earth Science Frontiers
• 出版年：2011
• 卷期：18(5)
• 关键词：白云母花岗岩 ; muscovite granite ; 铪同位素 ; hafnium isotopes ; 地壳生长 ; crustal growth ; 贵州 ; Guizhou Province
• 页码：p.213-223
• 图表：6 illus., 3 tables, 30 refs.
• 分类号：0801
• 出版序号：1653
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

The Fanjingshan Mountain in northeast Guizhou Province is located in the southwestern segment of the Jiangnan orogenic belt, and consists of the Early Neoproterozoic, Late Neoproterozoic and Paleozoic strata. The Early Neoproterozoic strata were strongly folded and then intruded by numerous muscovite-bearing leucogranites. Geochemical studies demonstrate that the leucogranite is strongly peraluminous with low to medium CaO/Na₂O values (0.09~0.52) and high A/CNK value >1.1(1.27~1.30), suggesting that they likely have resulted from a high temperature (>875 ℃) partial melting of clay-rich psammitic rocks. The supposed super mantle plume started at ca. 840 Ma may have provided extra heat for the high-temperature partial melting. In-situ zircon Hf isotope suggests two stages of continent growth before the Neoproterozoic for the South China block.