Experimental determination of the fluid-absent melting relations in the pelitic system

Vielzeuf, Daniel; Holloway, John

doi:10.1007/bf00375178

Cited by 1,024 publications

(569 citation statements)

References 62 publications

Supporting

Mentioning

506

Contrasting

Unclassified

Order By: Relevance

“…S-type magmas are commonly produced by partial melting of metapelites and metagreywackes under water-undersaturated conditions (e.g., Vielzeuf and Holloway, 1988;Patiño Douce and Harris, 1998;Zhang et al, 2004;Guo and Wilson, 2012;Wang et al, 2012). A series of experiments show that metasediments tend to yield melts with low FeO abundances (generally <3 wt.% FeO) despite variations in Al 2 O 3 content (Patiño Douce and Johnston, 1991; Montel and Vielzeuf, 1997;Patiño Douce and Harris, 1998;Fig.…”

Section: Source Components For S-type Granitesmentioning

confidence: 99%

“…9a). The exception is melts produced at high temperatures (1050-1250 • C) from metapelitic sources that started with a high FeO content, as shown by Vielzeuf and Holloway (1988). This appears to be due to the breakdown of garnet to spinel and quartz, liberating FeO into the melt (in addition to Al 2 O 3 , giving a relatively high abundance of both elements) (Turner and Rushmer, 2009).…”

Section: Source Components For S-type Granitesmentioning

confidence: 99%

See 1 more Smart Citation

Paleoproterozoic S-type granites in the Helanshan Complex, Khondalite Belt, North China Craton: Implications for rapid sediment recycling during slab break-off

Wei

Wang

et al. 2014

Precambrian Research

View full text Add to dashboard Cite

a b s t r a c t S-type granites, typically derived from the rapid recycling of sedimentary rocks, are sometimes accompanied by contemporary mafic magmatism and granulite metamorphism. However, the geodynamic context for such rock suites is often highly disputed, with various model proposed, including back-arc basin opening, lithospheric delamination, mantle plume and continental rifting. The Paleoproterozoic Khondalite Belt in the North China Craton provides an example of synchronous mafic and felsic magmatism that was accompanied by granulite-facies metamorphic events for which the tectonic affinities of these rocks remains unclear. This study integrates in situ zircon Hf-O isotope analyses, whole-rock geochemistry and Nd isotope results for the earliest two-mica granites (ca. 1.95 Ga) in order to provide constraints on the above issues. The granites are strongly peraluminous (A/CNK value >1.1), and characterized by high zircon ␦18 O values of 7.3-10.6‰, corresponding to calculated magmatic ␦ 18 O values of 9.1-12.3‰, similar to those of typical S-type granites. They have relatively high and homogeneous ε Nd (t) values of −1.1 to +0.9 and highly variable zircon ε Hf (t) values ranging from −1.0 to +8.3. In situ zircon Hf-O isotopic compositions indicate that the S-type granites may contain some mantle or juvenile crustal components in addition to a sediment component. Based on the new results and published data, a slab break-off model is proposed to explain the rapid recycling of sedimentary precursors and the generation of the ca. 1.95 Ga S-type granites.

show abstract

Section: Source Components For S-type Granitesmentioning

confidence: 99%

Section: Source Components For S-type Granitesmentioning

confidence: 99%

Paleoproterozoic S-type granites in the Helanshan Complex, Khondalite Belt, North China Craton: Implications for rapid sediment recycling during slab break-off

Wei

Wang

et al. 2014

Precambrian Research

View full text Add to dashboard Cite

show abstract

“…The A/CNK versus A/NK diagram defines the rocks as peraluminous with aluminum saturation indices (ASI) >1.1 indicating highly felsic S-type granite (Chappell and White, 1974;Chappell, 1999). Petrogenetic models proposed for the origin of S-type granites fall into two broad categories: (1) partial melting of metasedimentary rocks (e.g., Chappell and White, 1974;McCulloch and Chappell, 1982;Miller, 1985;Harris et al, 1986;Chappell et al, 1988;Vielzeuf and Holloway, 1988;Patĩno Douce, 1996; (2) extensive fractionation of mantle-derived magma (e.g., Rudnick and Presper, 1990;Altherr et al, 2000). The second model is considered to be unlikely for the origin of the Thien Ke granite, because rock compositions do not rep- resent a fractionation sequence from basalt to granites (all studied samples have SiO 2 content >63%).…”

Section: U-pb Datamentioning

confidence: 99%

Petrogenesis and zircon U–Pb ages of the Thien Ke granitic pluton in the Tam Dao region: Implications for early Paleozoic tectonic evolution in NE Vietnam

Nguyen

Hiếu

Hai

et al. 2014

Journal of Mineralogical and Petrological Sciences

View full text Add to dashboard Cite

Granites of the Thien Ke pluton that are exposed in the Tam Dao region are of sub-alkaline affinity, belong to the high-K calc-alkaline series, and display typical features of S-type granite. The rocks have high ASI values of 1.14-1.41 and are characterized by high initial 87 Sr/ 86Sr ratios (0.7264-0.7270) and low ε Nd (456 Ma) values (−6.5 to −8.4). All of these characteristics, combined with~1.8 Ga T DM model ages and low Mg# of 13-22, suggest an origin in the partial melting of crustal source rocks. LA-ICP-MS zircon U-Pb analytical results from two samples revealed emplacement ages of the granite at 456 ± 28 and 449 ± 12 Ma. These ages are entirely different from those reported in earlier publications and indicate the existence of a Caledonian tectonothermal event in the study area. The Nd-Sr isotopic data, in conjunction with inherited zircon ages (721-1876 Ma), imply Paleoproterozoic to Neoproterozoic crustal material as the major components of the underlying basement. The new geochronological data provide evidence for early Paleozoic magmatism in the Tam Dao region, which has not been previously identified.

show abstract

“…The peak mineral assemblage developed in these paragneisses is constituted by BtcGrtcPlcKfscSilcQtz, without stable muscovite. General P-T conditions of equilibration of this mineral assemblage can be calculated using the petrogenetic grids for metapelites of Vielzeuf and Holloway (1988) and Powell and Holland (1990), and are represented in Fig. 8.…”

Section: Metamorphic Evolutionmentioning

confidence: 99%

Structural and kinematic analysis of the Corredoiras detachment: evidence for early Variscan synconvergent extension in the Ordenes Complex, NW Spain

García¹,

Catalán

Arenas

et al. 1999

International Journal of Earth Sciences

View full text Add to dashboard Cite

An important detachment is described in the allochthonous Ordenes Complex, in the NW Iberian Massif, and its meaning is related to the kinematics of contemporaneous convergent structures. The Corredoiras Detachment (CD) separates a hangingwall unit, characterised by a medium-pressure metamorphic gradient, from a footwall high-pressure and hightemperature unit and an underlying ophiolitic unit. An associated ductile shear zone, nearly 2000 m thick, developed in the lower part of the hangingwall unit, where the Corredoiras Orthogneiss, a Lower Ordovician metagranite, was progressively transformed into augengneisses, mylonitic and ultramylonitic gneisses. The attitude of the stretching and mineral lineation in the mylonites varies due to late refolding at map scale, but the sense of movement can be estimated, being roughly top to the SE. According to crosscutting relationships, the CD developed subsequent to the thrusting of the high-pressure/high-temperature unit onto the ophiolitic unit, and prior to younger extensional detachments, upright folding and strike-slip tectonics. The geometric relationships of the CD with the previous structures in the footwall unit, the subtractive character of the metamorphic gap between its hangingwall and footwall, and the available isotopic data suggest that the CD is an early Variscan, ductile extensional detachment, the movement of which was roughly simultaneous with the onset of thrusting of the allochthonous complexes over their relative autochthon.

show abstract

Experimental determination of the fluid-absent melting relations in the pelitic system

Cited by 1,024 publications

References 62 publications

Paleoproterozoic S-type granites in the Helanshan Complex, Khondalite Belt, North China Craton: Implications for rapid sediment recycling during slab break-off

Paleoproterozoic S-type granites in the Helanshan Complex, Khondalite Belt, North China Craton: Implications for rapid sediment recycling during slab break-off

Petrogenesis and zircon U–Pb ages of the Thien Ke granitic pluton in the Tam Dao region: Implications for early Paleozoic tectonic evolution in NE Vietnam

Structural and kinematic analysis of the Corredoiras detachment: evidence for early Variscan synconvergent extension in the Ordenes Complex, NW Spain

Contact Info

Product

Resources

About