Migmatite - Wikipedia
网页Migmatite is a composite rock found in medium and high-grade metamorphic environments, commonly within Precambrian cratonic blocks. It consists of two or more constituents often layered repetitively: one layer is an older metamorphic rock that was reconstituted subsequently by partial melting ("neosome"), while the alternate layer has a ...
Migmatite : Properties, Formation, Compositions - Geology Science
网页2023年6月12日 · Migmatite is a type of rock that exhibits both solid-state and partial melting characteristics. It is commonly found in high-temperature metamorphic environments and is often associated with regions that have experienced intense geological processes such as mountain building or tectonic activity.
Migmatite | Metamorphic, Foliated, Gneiss | Britannica
网页Migmatite, in geology, rock composed of a metamorphic (altered) host material that is streaked or veined with granite rock; the name means “mixed rock.” Such rocks are usually gneissic (banded) and felsic rather than mafic in composition; they may occur on a regional scale in areas of high-grade.
Migmatite - an overview | ScienceDirect Topics
网页A migmatite is a metamorphic rock formed by anatexis that is generally heterogeneous and preserves evidence of partial melting at the microscopic to macroscopic scale. Migmatites represent the transition from metamorphic to igneous rocks in the rock cycle.
Migmatite - Encyclopedia.com
网页2018年5月29日 · Migmatite. A migmatite, or "mixed rock" in Greek, is a banded, heterogenous rock composed of intermingled metamorphic and igneous components. Veins, contorted layers, and irregular pods of silica-rich granite occur within the structure of foliated iron and magnesium-rich metamorphic rocks like gneiss , schist and amphibolite.
网页Definitions of terms. Migmatite: A composite silicate metamorphic rock, pervasively heterogeneous on a meso- to megascopic scale. It typically consists of darker and lighter parts.
Atlas of Migmatites - GeoScienceWorld Books
网页In his Atlas of Migmatites, Dr. Edward Sawyer provides genetically based definitions and a system of nomenclature with which it will be possible to describe and map migmatites effectively and to understand how combinations of factors and processes produce a bewildering morphological diversity.
Demystifying migmatites: introduction for field-based geologist
网页2015年8月3日 · Migmatites are heterogeneous, medium- to high-grade metamorphic rocks with at least one component formed by partial melting. As migmatites form under P – T conditions common in the middle and lower crust, they are widespread and likely to be encountered in the field.
Demystifying migmatites: introduction for field-based geologist
网页2015年8月3日 · Migmatites are heterogeneous, medium- to high-grade metamorphic rocks with at least one component formed by partial melting. As migmatites form under P-T conditions common in the middle and...
Migmatites: Formation & Composition | Vaia
网页Migmatites are composite rocks that form under extreme heat and pressure conditions, leading to partial melting and the mixing of metamorphic and igneous components, making them a prime interest in geology for understanding crustal processes.