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Neoproterozoic granitoids on Wrangel Island
Doklady Earth Sciences, 2016Based on geochronological U–Pb studies, the age of Wrangel Island granitoids was estimated as Neoproterozoic (Cryogenian). Some granitoids contain zircons with inherited cores with an estimated age of 1010, 1170, 1200, and >2600 Ma, assuming the presence of ancient (Neoarchean–Mesoproterozoic) rocks in the Wrangel Island foundation and their ...
M. V. Luchitskaya +3 more
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The Granitoid Series and Mineralization
1981Abstract 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, 1992The 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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Petrogenesis of the Tasmanian granitoids
1977This study of Tasman Orogenic Zone granitoid rocks in Tasmania is mainly concerned with the petrogenesis of a suited of garnet and cordierite-bearing, aluminous granites. These granites and the associated hornblende-biotite granodiorites are contact aureole plutons of Devonian age, emplaced in paratectonically deformed Palaeozoic rocks.
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Dike transport of granitoid magmas
Geology, 1993Thermal 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 +2 more
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Granitoids and magmatic series: the contextualized study of granitoids.
2016The relationship that many granitic rocks show with less differentiated mantle-derived magmas has been underestimated in the last decades and, that has led to the loss of a powerful scientific tool for the investigation of ancient geotectonic settings and, even for the evolution of the mantle-crust system.
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Precambrian Research, 1991
Abstract Structural relationships are described along parts of the eastern margin of the 1.76-1.84 Ga old batholith, known as the Transscandinavian Igneous Belt (TIB). They demonstrate that the Svecofennian structures of the country rocks are highly dependent on the shape of the younger granitoids which themselves have margins folded in the same ...
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Abstract Structural relationships are described along parts of the eastern margin of the 1.76-1.84 Ga old batholith, known as the Transscandinavian Igneous Belt (TIB). They demonstrate that the Svecofennian structures of the country rocks are highly dependent on the shape of the younger granitoids which themselves have margins folded in the same ...
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The Geological–Structural Types of Granitoids
Canadian Journal of Earth Sciences, 1974The existence of five natural geological structural types of granitoids is argued: (1) early orogenic (early folding or intrageanticlinal); (2) late orogenic, including granitoids of block-mountain areas; (3) tele-early orogenic; (4) tele-late orogenic; and (5) cratogenic.The early orogenic granitoids are formed during an early stage of folding (early
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Water-in-zircon: a discriminant between S- and I-type granitoid
Contributions To Mineralogy and Petrology, 2023Xiaoping Xia +2 more
exaly