Lead contents of S-type granites and their petrogenetic significance

Finger, Friedrich; Schiller, David

doi:10.1007/s00410-012-0771-3

Cited by 55 publications

(32 citation statements)

References 56 publications

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“…9B). On the diagram of Finger and Schiller (2012) they plot on both sides of the empirical line that separates primary lower temperature S-type (muscovite ± incipient biotite breakdown) and higher temperature S-types (muscovite + biotite breakdown), which represent the predominant type in our data set in agreement with the apparent predominance of hot granites.…”

Section: Zircon Inheritance and Zircon Saturation Temperaturessupporting

confidence: 72%

Exhuming a cold case: The early granodiorites of the northwest Iberian Variscan belt—A Visean magmatic flare-up?

et al. 2018

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In this study we report laser ablation-inductively coupled plasma-mass spectrometer U-Pb ages of granitoids from the so-called early granodiorites of the northwest Iberian Variscan belt. The U-Pb results attest to significant magmatic activity in Visean time (ca. 347-337 Ma) that generated a hitherto poorly constrained granitoid suite in the northwest Iberian tract of the western European Variscan belt realm. This early Carboniferous suite (ECS) is mainly composed of peraluminous cold and hot crustal granodiorites and monzogranites with minor associated mafic rocks that attest to minor involvement of mantle melting. Based on the geochronological and geochemical data, we compare the Visean granitoids with younger Variscan granitoids in northwest Iberia and, in view of the tectonothermal scenarios of the Variscan collision in northwest Iberia, propose a model for the genesis of the ECS in northwest Iberia that involves rapid melting upon fast exhumation of the thickened Gondwanan crust in the course of the protracted Variscan collision.

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Section: Zircon Inheritance and Zircon Saturation Temperaturessupporting

confidence: 72%

Exhuming a cold case: The early granodiorites of the northwest Iberian Variscan belt—A Visean magmatic flare-up?

et al. 2018

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“…4,6). Second, on the Ba-Pb plot devised by Finger and Schiller (2012), both the lowand high-Al series define trends that imply their origin as progressively higher-temperature melts (Fig. 11a).…”

Section: Discussion and Conclusion On The Origins Of The Tynong Magmasmentioning

confidence: 99%

“…11 a Logarithmic plot of Ba versus Pb concentrations in the Tynong low-and high-Al series rocks (pink and yellow dots, respectively). This diagram was originally devised by Finger and Schiller (2012) to differentiate between S-type granitic magmas formed by partial melting reactions involving muscovite or biotite breakdown, as well as rocks formed through fractionation processes. Note that neither series of rocks defines an array consistent with fractionation as the origin of the variations.…”

Section: Discussion and Conclusion On The Origins Of The Tynong Magmasmentioning

confidence: 99%

The Tynong pluton, its mafic synplutonic sheets and igneous microgranular enclaves: the nature of the mantle connection in I-type granitic magmas

Clemens

Regmi

Nicholls

et al. 2016

Contrib Mineral Petrol

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quartz dioritic sheets. Despite this evidence of direct mantle input into the Tynong magma system, the main granodioritic series do not appear to have been formed by magma mixing processes. Of any I-type granite in the region, the Tynong pluton has perhaps the most direct connection with mantle magmas. Nevertheless, the main mantle connection here is probably in the mantle-derived protolith for these crustal magmas and in the mantle thermal event that gave rise to melting of the deep crust in the Selwyn Block. This degree of mantle connectedness seems typical for I-type granitic rocks worldwide.

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“…Additionally, the Piaochi granites generally have higher Pb but lower Ba contents than those of their putative source rocks (see Table 1 in Yang et al, 2010), implying that they are primary low-T S-type granites without evolving fractional crystallization ( Fig. 8a) (Finger and Schiller, 2012). Therefore, the Piaochi granites belong to unfractionated S-type rather than fractionated I-type granite (e.g.…”

Section: The Granite Type Of the Piaochi Intrusionmentioning

confidence: 96%

Geochronology, geochemistry, and isotope compositions of Piaochi S-type granitic intrusion in the Qinling orogen, central China: Petrogenesis and tectonic significance

Qin

Wang

et al. 2014

Lithos

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Lead contents of S-type granites and their petrogenetic significance

Cited by 55 publications

References 56 publications

Exhuming a cold case: The early granodiorites of the northwest Iberian Variscan belt—A Visean magmatic flare-up?

Exhuming a cold case: The early granodiorites of the northwest Iberian Variscan belt—A Visean magmatic flare-up?

The Tynong pluton, its mafic synplutonic sheets and igneous microgranular enclaves: the nature of the mantle connection in I-type granitic magmas

Geochronology, geochemistry, and isotope compositions of Piaochi S-type granitic intrusion in the Qinling orogen, central China: Petrogenesis and tectonic significance

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