Journal ArticleDOI
Zircon and granite petrology.
TLDR
In this paper, a genetic classification of zircon populations from granitic rocks is proposed, with three main divisions: (1) granites of crustal or mainly crustal origin (sub) autochthonous and aluminous granites)]; (2) hybrid granites (calc-alkaline and sub-alkalinized series granites); (3) granite of mantle or mainly mantle origin (alkaline, tholeiitic series granite).Abstract:
The typologic study of zircon populations from granitic rocks lead to the proposition of a genetic classification with three main divisions: (1) granites of crustal or mainly crustal origin [(sub) autochthonous and aluminous granites)]; (2) granites of crustal+mantle origin, hybrid granites (calc-alkaline and sub-alkaline series granites); (3) granites of mantle or mainly mantle origin (alkaline and tholeiitic series granites). In detail, there are many petrogenetic variants of each of the following granitic rocks: granodiorite, monzogranite and alkaline granite. The variations observed with zircon typology are accompanied petrographically by modifications of associations of other main and accessory minerals, and on the field by the presence or absence of basic microgranular xenoliths, associated microgranites, rhyolites or basic rocks. In the typologic diagram, some endogenous non granitic rocks (i.e. migmatites, tonalites, rhyolites ...) show a logical distribution with regard to different genetic stocks of granitic rocks.read more
Citations
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Journal ArticleDOI
Provenance bias between detrital zircons from sandstones and river sands: A quantification approach using 3-D grain shape, composition and age
TL;DR: In this article, the authors compare detrital zircons from the actively eroding Murchison River channel in Western Australia with Ordovician fluvial sediments that have drained similar source rocks along the western margin of the West Australian Craton.
Journal ArticleDOI
Maximum age of the basal Cretaceous Chinkeh Formation sandstones, Maxhamish Lake area, Liard Basin, British Columbia
TL;DR: In this article, detrital zircon ages obtained from a subsurface core in the Maxhamish Lake area indicate a maximum depositional age of 112.6 ± 2.0 Ma and an Early Albian to latest Aptian age.
Journal ArticleDOI
Estimating of Crystallization Temperature of Mard-Abad (Karaj) Granitic Intrusion Using Mineralogy, Geochemistry and Morphology of Zircon Crystals
TL;DR: In this article, the temperature of calc-alkaline granites has been estimated as high as 750 to 800 C° based on mineralogical and geochemical evidences, and the thermometric measurement on zircon crystals has also been applied to achieve this goal.
Sources of late-Hercynian biotite-rich granite plutons from Northern Portugal: inferences from Zircon morphologies
Helena Martins,Fernando Noronha +1 more
Journal ArticleDOI
Petrogenesis of Tertiary granitoid rocks from east of the Bidhand fault, Urumieh-Dokhtar Magmatic Arc, Iran: Implication for an active continental margin setting
TL;DR: In this article, the authors show that the Tertiary granitoid and MGEs are cognate late cumulates, formed by pressure quenching mechanism during the late stage of magma evolution in crustal magma chamber.
References
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Book ChapterDOI
ORIGIN OF GRANITE IN THE LIGHT OF EXPERIMENTAL STUDIES IN THE SYSTEM NaAlSi3O8–KAlSi3O8–SiO2–H2O
O. F. Tuttle,N. L. Bowen +1 more
Journal ArticleDOI
Uranium-Lead Isotopic Variations in Zircons: A Case Study
Leon T. Silver,S. Deutsch +1 more
TL;DR: In this article, the authors used a single 250-pound block of Precambrian Johnny Lyon granodiorite from the Dragoon Quadrangle in Cochise County, Arizona, with a special attention to yield and nature of impurities.
Journal ArticleDOI
Granites and Their Enclaves. J. Didier, 1973. Elsevier, Amsterdam, 393 pp., Dfl. 100.00
Journal ArticleDOI
The Granite Controversy
TL;DR: In this article, the Granite Controversy has been studied in the context of geologiska foreningen i Stockholm Forhandlingar (GFH) and geology.
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