Migmatite : Properties, Formation, Compositions - Geology Science
Jun 12, 2023 · 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 - Wikipedia
Migmatite is a composite rock found in medium and high-grade metamorphic environments, commonly within Precambrian cratonic blocks.
Evolution of layering in a migmatite sample: Implications for the ...
May 1, 2024 · This study is focused on a single sample (16TG143) of finely layered, migmatitic gneiss from the Adirondack Highlands, New York, interpreted to have undergone extensive biotite dehydration melting (i.e., Bt + Pl + Als + Qz = Grt + Kfs + melt). The rock contains one distinct leucosome layer.
Retrograde processes in migmatites and granulites revisited
Jan 11, 2002 · Discerning the history of burial, residence at depth and exhumation of rock samples from orogens, and unravelling what processes have affected them in the course of their passage through an orogen, are essential elements in constraining alternative models of orogenesis and understanding crustal differentiation.
Migmatite | Metamorphic, Foliated, Gneiss | Britannica
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 …
The pressure–temperature–time path of migmatites from the …
Apr 1, 2004 · A combined metamorphic and isotopic study of lit-par-lit migmatites exposed in the hanging wall of the Main Central Thrust (MCT) from Sikkim has provided a unique insight into the pressure–temperature–time path of the High Himalayan Crystalline Series of …
A migmatite is a rock produced under high-grade metamorphic conditions by melting or partial melting of a pre-existing rock in the continental or oceanic crust, irrespective of proportion of melt.
Migmatite - an overview | ScienceDirect Topics
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 - Rock Identifier
A migmatite is a hybrid rock of sorts; it contains both igneous and metamorphic components, often in alternating layers. These layers tend to create striking, dark-and-light banding or waving patterns.
Migmatitic gneiss aggregates: Compositional, mechanical, and ...
Mar 20, 2021 · Sorted lithotypes of migmatitic gneiss samples retained in a 12.5 mm sieve: metamorphic (met.) constituents (paleosome and melanosome), igneous rock (leucosome), and igneous (ign.) intrusive material (pegmatite and granitoid).