Formation of high  18O fayalite-bearing A-type granite by high-temperature melting of granulitic metasedimentary rocks, southern China

Zircon U–Pb, molybdenite Re–Os and muscovite Ar–Ar isotopic dating of the Xitian W–Sn polymetallic deposit, eastern Hunan Province, South China and its geological significance

“…Biotite-bearing monzogranites are previously considered as crustal transformation-type or S-type granites originated from regional Paleoproterozoic meta-sedimentary rocks that occur in the region (RGNTD, 1985;Li, 1991;Li et al, 2007b). However, some of them are recently classified as fractionationed I-type granites or A-type granites (Zhou and Li, 2000;Ma et al, 2004;Fu et al, 2004a;Bai et al, 2005;Jiang et al, 2005Jiang et al, , 2006Jiang et al, , 2009Jiang et al, , 2011Li et al, 2007e, 2014aHuang et al, 2011;Zhou et al, 2013). All these rocks constitute melts generated in an anorogenic, intraplate environment where regional lithospheric extension occurred in the Early Yanshanian Jiang et al, 2009Jiang et al, , 2011Zhou et al, 2013).…”

Intraplate crustal remelting as the genesis of Jurassic high-K granites in the coastal region of the Guangdong Province, SE China

“…830°C (Table 4) for group A samples, suggesting that magmas were produced at temperatures >830°C. Huang et al (2011) documented evidences showing that some of the ca. 160 Ma granites, e.g.…”

“…Whole-rock Sr-Nd isotope compositions for the Jurassic high-K granites emplaced in the coastal area. Data for coeval granites (data from Huang et al, 2011;Li et al, 2007aLi et al, , 2007bXu et al, 2007) and basaltic rocks are shown for comparison. Basaltic rock data are from Jiang et al (2009), Li et al (2004a and .…”

“…Recent studies using latest microanalytical innovations, in particular the in situ zircon Hf and O analyses, have successfully revealed the origin and evolution of some granites which was not possible before (e.g., Huang et al, 2011;Kemp et al, 2007Kemp et al, , 2008Li et al, 2009a). In this study, in situ zircon Hf-O analyses are employed in addition to petrological and geochemical studies to identify the relative contribution of mantle and supracrustal materials in the genesis of various high-K granites locating along the present-day coastal area of the Guangdong Province, southeastern China.…”

Geochronology and geochemistry of the high Mg dioritic dikes in Eastern Tianshan, NW China: Geochemical features, petrogenesis and tectonic implications

“…However, the negative eHf(t) and eNd(t) values indicate that some old crustal material was added to the system (Huang et al, 2011). Modeling was undertaken to test this, using the values of depleted mantle (DM) to represent the mantle source and the Mesoproterozoic Kawabulake Group of Eastern Tianshan to represent the sediment.…”