本文選題：含石榴子石花崗片麻巖 + 溫度—壓力(P—T)評價�。� 參考：《地質論評》2017年02期

【摘要】：蚌埠隆起區(qū)是華北克拉通的重要組成部分,然而前人對于蚌埠隆起結晶基底形成的變質環(huán)境和時限分析相對較為薄弱,制約了人們全面理解該隆起的形成和演化過程。因此,本文在詳細的野外地質調查基礎上,對在蚌埠隆起東部朱頂—石門山地區(qū)新發(fā)現(xiàn)的含石榴子石花崗片麻巖進行了較為細致的巖相學、礦物化學測試分析以及LA-ICP-MS鋯石U-Pb定年,運用不同的溫壓計方法進行P—T條件估計,得出該樣品溫壓條件為736~788℃和0.76~0.89GPa,表明其形成于低壓麻粒巖相條件。鋯石定年分析記錄了巖漿結晶和變質兩期事件,它們對應的年齡分別為2562±34~2584±25Ma和2433±31~2436±24Ma。
[Abstract]:The Bengbu uplift is an important part of the North China Craton. However, the metamorphic environment and time limit analysis of the crystalline basement formation of Bengbu uplift is relatively weak, which restricts the overall understanding of the formation and evolution of the uplift. Therefore, on the basis of detailed field geological investigation, the new discovered granitic gneiss containing pomegranate in the eastern Zhuding-Shimenshan area of Bengbu uplift has been studied in detail. Mineral chemical analysis and LA-ICP-MS zircon U-Pb dating were used to estimate P-T conditions. The temperature and pressure conditions of the samples were 736 鈩，

本文編號：1850629