Coupled elemental and isotopic analyses of polygenetic zircons from granitic rocks by ion microprobe, with implications for melt evolution and the sources of granitic magmas

Barth, Andrew P.; Wooden, Joseph L.

doi:10.1016/j.chemgeo.2010.07.017

Cited by 168 publications

(139 citation statements)

References 36 publications

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“…Similar to the temperature, oxygen fugacity is also a significant index to reflect the redox condition of magma melt, not only for the genesis of granites but also for their close relationship with the mineralization of different metals [60,[70][71][72][73][74][75][76][77][78][79][80][81]. For example, high oxygen fugacity plays an important role in controlling the formation of porphyry Cu-Au and epithermal Au-Cu deposits, whereas, low oxygen fugacity is in favor of the W-Sn-Mo mineralization [75,76,79,82].…”

Section: Oxygen Fugacities and Fractional Crystallizationmentioning

confidence: 99%

Geochronology, Petrology, and Genesis of Two Granitic Plutons of the Xianghualing Ore Field in South Hunan Province: Constraints from Zircon U–Pb Dating, Geochemistry, and Lu–Hf Isotopic Compositions

Yang

Cao

et al. 2018

Minerals

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Two small-sized granitic plutons, outcropped in Xianghualing ore field, South Hunan (South China), have a close relationship with the super large-scale Sn-W polymetallic mineralization in this ore field. The Laiziling and Jianfengling plutons are composed of medium-to coarse-grained two-mica and coarse-grained biotite granites, respectively, and have zircon U-Pb ages of 156.4 ± 1.4 Ma and 165.2 ± 1.4 Ma, respectively. Both of the Laiziling and Jianfengling granites are characterized by extremely similar elemental and Lu-Hf isotopic compositions with high contents of SiO 2 , Al 2 O 3 , Na 2 O, K 2 O, high A/CNK ratios, negative ε Hf (t) values (ranging from −3.86 to −1.38 and from −5.44 to −3.71, respectively), and old T DMC ages (ranging from 1.30 to 1.47 Ga and from 1.32 to 1.56 Ga, respectively). These features indicate that they both belong to highly fractionated A-type granites, and were formed in an extensional setting and from the same magma chamber originated from the Paleoproterozoic metamorphic basement of South China with a certain amount of mantle-derived magma involved with temperatures of ca. 730 • C and low oxygen fugacity.

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Section: Oxygen Fugacities and Fractional Crystallizationmentioning

confidence: 99%

Geochronology, Petrology, and Genesis of Two Granitic Plutons of the Xianghualing Ore Field in South Hunan Province: Constraints from Zircon U–Pb Dating, Geochemistry, and Lu–Hf Isotopic Compositions

Yang

Cao

et al. 2018

Minerals

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“…Zircon trace element concentrations reflect melt compositions and are therefore useful for tracking melt evolution within an intrusive or extrusive sequence (e.g. Claiborne et al, 2010;Barth and Wooden, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Hafnium solid solution in zircon serves as a monitor of melt fractionation (Anderson et al, 2008;Barth and Wooden, 2010;Claiborne et al, 2010). Zircons from each of the three sequences exhibit comparable ranges in Hf concentrations, reflecting similar ranges of melt fractionation and internal trends typical of intrusive rocks (Figure 11 …”

Section: Zircon Trace Element Geochemistrymentioning

confidence: 98%

Regional and temporal variability of melts during a Cordilleran magma pulse: Age and chemical evolution of the Jurassic arc, eastern Mojave Desert, California

Barth

Wooden

Miller

et al. 2016

Geological Society of America Bulletin

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Intrusive rock sequences in the central and east Mojave Desert segment of the Jurassic Cordilleran arc of the western US record regional and temporal variations in magmas generated during the second prominent pulse of Mesozoic continental arc magmatism. U/Pb zircon ages provide temporal control for describing variations in rock and zircon geochemistry that reflect differences in magma source components. These source signatures are discernible through mixing and fractionation processes associated with magma ascent and emplacement. The oldest well-dated Jurassic rocks defining initiation of the Jurassic pulse are a 183 Ma monzodiorite and a 181 Ma ignimbrite.Early to Middle Jurassic intrusive rocks comprising the main stage of magmatism include two high K calc-alkalic groups; to the north, the deformed 183 to 172 Ma Fort

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“…Calibration of U was based on zircon standard Madagascar Green (MAD; 4196 ppm U; Barth and Wooden 2010). Isotopic ratios were calibrated by replicate analysis of zircon standard R33 (421 Ma, Black et al 2004;Mattinson 2010), which was rerun after every fourth analysis.…”

Section: Methodsmentioning

confidence: 99%

Geologic Setting of Eclogite-facies Assemblages in the St. Cyr Klippe, Yukon–Tanana Terrane, Yukon, Canada

Petrie

Gilotti

McClelland

et al. 2015

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SUMMARYThe St. Cyr area near Quiet Lake hosts well-preserved to variably retrogressed eclogite found as sub-metre to hundreds of metre-long lenses within quartzofeldspathic schist in southcentral Yukon, Canada. The St. Cyr klippe consists of structurally imbricated, polydeformed and polymetamorphosed units of continental arc crust and ultramafic-mafic rocks. Eclogite-bearing quartzofeldspathic schist forms thrust slices in a 30 km long by 6 km wide, northwest-striking outcrop belt. The schist unit comprises metasedimentary and felsic intrusive rocks that are intercalated on the metre to tens of metres scale. Ultramafic rocks, serpentinite and associated greenschist-facies metagabbro form imbricated tectonic slices within the eclogite-bearing quartzofeldspathic unit, which led to a previously held hypothesis that eclogite was exhumed within a tectonic mélange. The presence of phengite and Permian zircon crystallized under eclogite-facies metamorphic conditions in the quartzofeldspathic host rocks indicate that the eclogite was metamorphosed in situ together with the schist as a coherent unit that was part of the continental arc crust of the Yukon-Tanana terrane, rather than a mélange associated with the subduction of oceanic crust of the Slide Mountain terrane. Petrological, geochemical, geochronological and structural similarities link St. Cyr eclogite to other high-pressure localities within Yukon, indicating the high-pressure assemblages form a larger lithotectonic unit within the Yukon-Tanana terrane. Geoscience Canada, v. 42, http://www.dx

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Coupled elemental and isotopic analyses of polygenetic zircons from granitic rocks by ion microprobe, with implications for melt evolution and the sources of granitic magmas

Cited by 168 publications

References 36 publications

Geochronology, Petrology, and Genesis of Two Granitic Plutons of the Xianghualing Ore Field in South Hunan Province: Constraints from Zircon U–Pb Dating, Geochemistry, and Lu–Hf Isotopic Compositions

Geochronology, Petrology, and Genesis of Two Granitic Plutons of the Xianghualing Ore Field in South Hunan Province: Constraints from Zircon U–Pb Dating, Geochemistry, and Lu–Hf Isotopic Compositions

Regional and temporal variability of melts during a Cordilleran magma pulse: Age and chemical evolution of the Jurassic arc, eastern Mojave Desert, California

Geologic Setting of Eclogite-facies Assemblages in the St. Cyr Klippe, Yukon–Tanana Terrane, Yukon, Canada

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