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Geochronology of the Phanerozoic granitoids in northeastern China [PDF]

Journal of Asian Earth Sciences, 2011
Northeast (NE) China is characterized by immense volumes of granitic rocks, exposed over an area of200,000 km2. Although the precise geochronological framework was not clear, it was considered thatmost of them were emplaced during the Paleozoic, when ...
Bor-Ming Jahn, Wenchun Ge, Simon Wilde   +2 more
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Metamorphism of Granitoids

1994
Granitoid rocks comprise granites, alkali-feldspar granites, granodiorites and tonalites, and constitute a large portion of the continental crust. Because the main constituents — alkali-feldspar, plagioclase, quartz, biotite, muscovite, hornblende — are found over a wide range of P-T conditions, this rock group is not a very useful indicator of ...
Kurt Bucher, Martin Frey
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Granitoid suites

Geological Journal, 1991
AbstractThe concept of suites within granitoid batholiths must be treated with extreme caution, especially when petrogenic interpretation of identified suites is involved (e.g. infrastructural control of granitoid suite composition). Without stated, necessary, and sufficient operational definitions of the parameters (and their weighting) used in suite ...
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Proterozoic Granitoids of Rajasthan

Journal of the Geological Society of India, 2005
Abstract Two granitoid bodies each from Palaeo-, Meso- and Neo-proterozoic periods have been studied for their chemical, petrological and source characteristics The Proterozoic granitoids are megacrystic as well non-megacrystic with variable effect by tectonometamorphic events The Palaeo-proterozoic granitoids are peraluminous ...
S.K Bhushan, V.K. Chittora
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Ultrametamorphism and granitoid genesis

Tectonophysics, 1977
Abstract A model is presented to explain the geochemical and mineralogical characteristics of granitoids and their inclusions. The product of ultrametamorphism is melt + residuum, both of which may move en masse to the site of crystallization. The nature of the source material can be deduced from studies on the granitoids and their inclusions; based
Allan J.R. White, Bruce W. Chappell
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Tectonic discrimination of granitoids

Geological Society of America Bulletin, 1989
Granitoids as categorized by tectonic environment are (1) island arc granitoids (IAG), (2) continental arc granitoids (CAG), (3) continental collision granitoids (CCG), (4) postorogenic granitoids (POG), (5) rift-related granitoids (RRG), (6) continental epeirogenic uplift granitoids (CEUG), and (7) oceanic plagiogranites (OP).
PAPU D. MANIAR, PHILIP M. PICCOLI
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Metamorphism of Granitoid Rocks

2002
Granitoid rocks comprise granite, alkali-feldspar granite, granodiorite and tonalite. They constitute the largest portion of the continental crust. Granitoid gneisses, commonly migmatites, are in fact the dominant rock type of the continents. Because the main constituents — alkali-feldspar, plagioclase, quartz, biotite, muscovite, hornblende — are ...
Kurt Bucher, Martin Frey
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The Granitoid Series and Mineralization

1981
Abstract Granitoids can be classified into either a magnetite-bearing magnetite series or a magnetite-free ilmenite series, a classification also applicable to their effusive equivalents. Magnetite series granitoids are associated with major sulfide mineralization, whereas ilmenite series granitoids are related to cassiterite and ...
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The behavior of tin in granitoid magmas

Economic Geology, 1992
The spatial and temporal relationship between tin mineralization and granitoid rocks is well documented. A great deal of work, including mineralogic, geochemical, fluid inclusion, and stable and radiogenic isotope studies, has been undertaken on numerous cassiterite-bearing deposits in order to resolve the problem of their genesis.
Jeff R. Taylor, Vic J. Wall
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Dike transport of granitoid magmas

Geology, 1993
Thermal and fluid-dynamical analyses suggest that for viscosities and density contrasts spanning the range considered typical for many calc-alkalic granitoids, dike ascent is a viable mechanism for the transport of large volumes of granitoid melt through the continental crust.
Nick Petford, Ross C. Kerr, John R. Lister   +2 more
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