• 责任者：Liu Zhenghong (School of Earth Sciences ; Jilin University ; Changchun 130061 ; China) ; Li Shichao
• 刊名：Earth Science Frontiers
• 出版年：2011
• 卷期：18(2)
• 关键词：变质岩 ; metamorphic rocks ; 线理 ; lineation ; 大青山 ; Daqing Mountains
• 页码：p.55-61
• 图表：7 illus., 15 refs.
• 分类号：0802
• 出版序号：20120183
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

Melt lineation is a special linear structural element of high-grade metamorphic rocks, which is composed of long lens or rod-like aggregates of melted leuco-veins distributed along X-axis direction of strain ellipsoid. Melt lineation developed in ductile deformation zones of deep structural levels of crust and may indicate the moving direction as the mineral stretching lineation does. Melt lineation is controlled by deformation, metamorphism and partial melting in an extensional tectonic environment. The main mechanism of melt lineation is extensional deformation which led to partial melting of high-grade metamorphic rock. Melt lineation keeps a lot of rock rheological information of deep crust, which is of great scientific significance for probing into rock rheological mechanism of deep crust and the formation and evolution of early crust.