Introduction to the origin of granites and related rocks
Processes that control the generation of granitic magmas in the deep crust. This theme covers the large volume of observations from experiments, field studies, petrography, mineralogy, geochemistry and thermodynamic modeling linked to the Most of the deep geothermal reservoir are granite (Brown et al., 2012), and Metamorphic rocks (Li et al., 2019) beneath the sedimentary basins and Frontiers Geological Characteristics and
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Heat production in granitic rocks: Global analysis based on a
The goal of our study is to examine heat production in granites worldwide through statistical analysis of a globally representative dataset on concentrations of heat granite, coarse- or medium-grained intrusive igneous rock that is rich in quartz and feldspar; it is the most common plutonic Granite Composition, Properties, Types, & Uses
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The Formation of Granites & Plate Tectonics SpringerLink
To a builder, headstone carver or interior designer, the term “granite” includes a whole host of other igneous rocks, such as basalt, gabbro, diorite, syenite, Sun Z, Wang A, Liu J, Hu B, Chen G (2015) Radiogenic heat production of granites and potential for Hot Dry Rock geothermal resource in Guangdong Province, Radiogenic heat production of crystalline rocks in the
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The production of granitic magmas through crustal anatexis
The granites were emplaced between 124 and 118 Ma, based on their zircon U-Pb ages. These granites are characterized by high-K calc-alkaline, low The goal of our study is to examine heat production in granites worldwide through statistical analysis of a globally representative dataset on concentrations of heat Heat production in granitic rocks: Global analysis based on a
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Minerals Free Full-Text Origin of S-, A- and I
The origin and evolution of granites remain a matter of debate and several approaches have been made to distinguish between different granite types. Overall, granite classification schemes based on Granite, sensu stricto, is a coarse grained and granular igneous rock comprising 20–60 vol% quartz and 35–90 vol% total feldspar whereas a granitic rock, Frontiers Editorial: Granite Petrogenesis and Geodynamics
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Radiogenic heat production in granitoids from the Sierras de
It is the product of the evolution of granitic magmatism with a high K 2 O content, in which the less evolved rocks are similar to calc-alkaline granites, with SiO 2 values between 65 and 71%, and the more evolved rocks show a strong affinity with A-type granites, with SiO 2 values higher than 76% and increasing peraluminosity and alkalinity Radioactive heat-producing element content and rock thermal conductivity together with rock density have been determined for rocks from surface and drilling holes within Zhangzhou region, SE China. The results suggest that the average radiogenic heat production rate of granites is 3.70 μW/m3, markedly higher than that of middle-acid Thermal conductivity and radioactive heat-producing
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Heat production in granitic rocks: Global analysis based on a
Granitic rocks play special role in the dynamics and evolution of the Earth and its thermal regime.First, their compositional variability, reflected in the distribution of concentrations of radiogenic elements, provides constraints on global differentiation processes and large scale planetary evolution, where emplacement of granites is In this study, we develop a global model of heat production for granites with rock formation ages spanning 4 Ga to the present. The model is derived from a compilation of 24,555 whole rock geochemical analyses (13,400 with interpreted rock formation ages). We explore the compositional variations that lead to these variations in heat production.A 4 Ga record of granitic heat production: Implications for
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The production of granitic magmas through crustal anatexis
Partial melting of crustal rocks produces granitic magmas with varying compositions. • Both ancient and juvenile crust underwent partial melting to produce granitic magmas. • Active rifting is a geodynamic mechanism of crustal anatexis in fossil suture zone. • Rifting orogeny is realized by domical uplift of granites and metamorphic coreThe heat production values were determined to be 1.21–2.02 μW m⁻³ for the sedimentary rocks, yielding an arithmetic mean of 1.67 ± 0.29 μW m⁻³, and 1.17–5.81 μW m⁻³ for the basalRadiogenic heat production variations in the Gonghe
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Frontiers Geological Characteristics and Distribution of Granite
Most of the deep geothermal reservoir are granite (Brown et al., 2012), and Metamorphic rocks (Li et al., 2019) beneath the sedimentary basins and numerous studies have shown that the granite radioactive heat production has significant contribution to the heat source, such as Australia Cooper basin geothermal field caused by granites withAccordingly, heat production of average melt compositions was back-calculated to ∼530 Ma based on appropriate decay equations for 238 U, 235 U, 232 Th and 40 K. The resultant average value isHeat production in granitic rocks: Global analysis based on a
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The Formation of Granites & Plate Tectonics SpringerLink
The formation of granites by subduction. In a, subducting oceanic crust releases saline fluids from the dehydration of the crust, and at greater depth the underlying lithosphere.b these fluids partially melt the overlying hot asthenosphere, making basaltic magmas enriched in sodium and potassium.These rise to the base of the crust, c, where The varieties of rock radioactive heat production are not attributed to the differences in the basement rocks. Additionally, there is no efficient magma chamber with abundant remnant heat beneath the SCB. Jurassic high heat production granites associated with the Weddell Sea rift system, Antarctica. Tectonophysics, 722 (2018), pp. Late Mesozoic high-heat-producing (HHP) and high
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Radiogenic heat production variations in the Gonghe
The results show that the radiogenic heat production of the granitic rocks is approximately that of global Mesozoic-Cenozoic granites, which is further corroborated by an extensive compilation of heat production data for granitic rocks in the immediate vicinity of the study area (average of 2.07 ± 0.97 μW m −3, n = 136). Based on the heatof partial melting of crustal rocks triggered by, and mixed with, mantle-derived melts (Siebel et al. 1997, 2003). In the Fichtelgebirge, the emplacement of the younger suite of S-type granites (YIC) is confined to an age range of 298 to 286 Ma (see Tab. 1). Besides the biotite–muscovite granites, a further granite typeOriginal paper Radiogenic heat production of Variscan
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Characteristics of Radiogenic Heat Production of
In general, the RHPR values of the granitic rocks in western Sichuan obtained in this study are higher than the average RHPR value of global Mesozoic–Cenozoic granites ( 3.09 ± 1.62 μW/m 3, ) and The radioactive heat production of granite rocks (rhp in μW.m −3) can be calculated by taking into account the heat generation constant (amount of heat released per gram U, Th and K per unit time) High heat production (HHP) granites of Jhunjhunu area, Rajasthan, India. Bulletin of Indian Geological Association, 27 (1994), pp. 55-61.Heat production rate from radioactive elements of granite rocks
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The production of granitic magmas through crustal anatexis
This results in the compositional difference between natural granites and experimental melts. In addition to the fractional crystallization of mantle-derived mafic magmas for the generation of granites during accretionary orogeny, a wide range of crustal rocks can be partially melted to form granites in both accretionary and collisional orogens.Granite is an Effective Helium Source Rock: Insights from the Helium Generation and Release Characteristics in Granites from the North Qinling Orogen, China February 2020 Acta Geologica Sinica 94(PDF) Granite is an Effective Helium Source Rock
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High heat production of the Late Mesozoic Luanchuan granites
Some of the high heat production granites in the continental crust have been suggested to be linked with I-, A-, and partly S-type granitoids which aided in the formation of associated polymetallic deposits. China, and integrate these with published geochemical information to compute the rate of heat production per unit rock mass (RHP Tin- and/or W-granites are highly evolved rocks with distinctive trace element signatures, most prominent is the marked enrichment in incompatible elements such as Sn, W, Nb, Ta, U, as well as Li, Be, Rb, and Cs, the marked depletion in Fe, Ti, Ca, Mg, Sr, Ba, and Zr, and very high element ratios as for instance Rb/Sr, but also Rb/K, Sediment and weathering control on the distribution of
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The production of granitic magmas through crustal anatexis
This results in the compositional difference between natural granites and experimental melts. In addition to the fractional crystallization of mantle-derived mafic magmas for the generation of granites during accretionary orogeny, a wide range of crustal rocks can be partially melted to form granites in both accretionary and collisional orogens.
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