| 郯庐断裂带(安徽段)内磁铁石榴角闪岩的形成条件、年代学及构造归属的探究 |
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| 引用本文： | 聂峰,石永红,王娟,康涛,曹晟.郯庐断裂带(安徽段)内磁铁石榴角闪岩的形成条件、年代学及构造归属的探究[J].岩石学报,2014,30(6):1718-1730. |
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| 作者姓名： | 聂峰 石永红 王娟 康涛 曹晟 |
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| 作者单位： | 合肥工业大学资源与环境工程学院, 合肥 230009;合肥工业大学资源与环境工程学院, 合肥 230009;合肥工业大学资源与环境工程学院, 合肥 230009;合肥工业大学资源与环境工程学院, 合肥 230009;合肥工业大学资源与环境工程学院, 合肥 230009 |
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| 基金项目： | 本文受国家自然科学基金项目（41272073）和国家科技重大专项（2011ZX05008-001-31）联合资助. |
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| 摘 要： | 通过对肥东群南缘特征性岩石——磁铁石榴角闪岩的构造地质学和岩相学研究表明,磁铁石榴角闪岩及其围岩以构造透镜体形式产出,该变质岩具有两个阶段变质矿物组合,热力学评价显示①阶段的温压范围为：T=616~700℃和P=0.66~0.85GPa,平均温压为T=653±35℃和P=0.75±0.09GPa。②阶段的温压范围为：T=597~643℃和P=0.51~0.94GPa,平均温压为T=620±15℃和P=0.73±0.15GPa,并表现出一个快速等压降温P-T演化特征。锆石U-Pb定年和拉曼光谱分析表明,该磁铁石榴角闪岩的变质年龄为2469±49Ma。结合地质背景和前人的研究,可以判定该类岩石可能源于华北板块。由于郯庐断裂的左旋走滑作用被构造并置与扬子板块中。从而进一步推测,郯庐断裂（安徽段）横向宽度可达到10~15km。
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| 关 键 词： | 磁铁石榴角闪岩 等压降温 锆石U-Pb年龄 郯庐断裂 |
| 收稿时间： | 3/5/2014 12:00:00 AM |
| 修稿时间： | 4/1/2014 12:00:00 AM |
Investigation on the metamorphic conditions and geochronology for the magnet garnet amphibole in the Tan-Lu Fault Zone (Anhui segment), and discussion of its tectonic attribution |
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| NIE Feng,SHI YongHong,WANG Juan,KANG Tao and CAO Sheng.Investigation on the metamorphic conditions and geochronology for the magnet garnet amphibole in the Tan-Lu Fault Zone (Anhui segment), and discussion of its tectonic attribution[J].Acta Petrologica Sinica,2014,30(6):1718-1730. |
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| Authors: | NIE Feng SHI YongHong WANG Juan KANG Tao and CAO Sheng |
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| Institution: | School of Resources and Environment Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environment Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environment Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environment Engineering, Hefei University of Technology, Hefei 230009, China;School of Resources and Environment Engineering, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | |
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| Keywords: | Magnet garnet amphibole Isobaric cooling Zircon U-Pb age Tan-Lu Fault Zone |
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