Formation and tectonic evolution of Southeastern China and Taiwan: Isotopic and geochemical constraints

Mesozoic large magmatic events and mineralization in SE China: oblique subduction of the Pacific plate

“…Several tectonic models have been postulated to explain the Mesozoic evolution of SE China (Hsü et al 1990;Gilder et al 1991;Li 2000;Zhou and Li 2000;Wang et al 2003;Zhou et al 2006;Chen et al 2008;Wong et al 2009). Most models can be classified into one of two types: an active continental margin related to the northwestward subduction of the Pacific plate in the Mesozoic (Jahn et al 1990;Zhou and Li 2000;Zhou et al 2006;Chen et al 2008); or an intraplate lithospheric event, for example, a result of the closure of an oceanic basin in the SE China interior (Hsü et al 1990;Li 1998). Other models, such as wrench faulting and/or continental rifting and extension (Gilder et al 1991;Li 2000;Wang et al 2003Wang et al , 2005c, have also been proposed based on the intracontinental lithospheric extension and thinning since the early Mesozoic (Wang et al 2006).…”

Geochronological and geochemical constraints on the petrogenesis of Middle Paleozoic (Kwangsian) massive granites in the eastern South China Block

“…The formation of these Yanshanian igneous rocks might be related to the northwestward oblique subduction of the Paleo-Pacific Plate beneath the Eurasia Plate (e.g. Charvet et al, 1994;He et al, 2010;Jahn et al, 1990;Jiang et al, 2009Jiang et al, , 2011Li and Li, 2007;Li et al, 2006;Zhou and Li, 2000;Zhou et al, 2006Zhou et al, , 2007. The middle Paleozoic (Kwangsian) massive granitic intrusions are important parts of the Phanerozoic granites in the eastern SCB (Fig.…”

“…400-440 Ma) for several plutons (e.g., Cheng et al, 2009;Li and Gui, 1992;Shen et al, 2008;Shu et al, 2008b;Xiang et al, 2008;Xu et al, 2009;Zhang et al, 2010a,b). In addition, due to the lack of systematical geochemical data for the Kwangsian massive granites in the eastern SCB, the tectonic nature of the Kwangsian event and correlation between the Yangtze and Cathaysia Blocks remain unclear (e.g., Charvet et al, 1999;Faure et al, 2009;Guo et al, 1989;Jahn et al, 1990;Li et al, 2010b;Liu and Xu, 1994;Ma et al, 2004;Shu, 2006;Shu et al, 2008b, c;Wang et al, 2007cWang et al, , 2010Wang et al, , 2011Xu et al, 1996). In this paper, to advance the understanding of the temporal and spatial pattern of the Kwangsian massive granites and their petrogenesis and tectonic implications, we present a set of new systematic geochronological and geochemical data for the representative granitic intrusions in Hunan, Jiangxi, eastern Guangxi and western Guangdong Provinces, which have not been paid much attention previously.…”

Geochemical, zircon U–Pb dating and Sr–Nd–Hf isotopic constraints on the age and petrogenesis of an Early Cretaceous volcanic-intrusive complex at Xiangshan, Southeast China

“…The geodynamic setting and tectonic regime of Yanshanian magmatism is a hot topic of international interest and remains controversial. Many contrasting models are proposed: (1) Alpine-type collision between the Yangtze and Cathaysia Blocks (Hsü et al 1988;; (2) continental rifting and basin formation (Gilder et al 1991;Li 2000); (3) subduction of the paleo-Pacific plate at an active continental margin; for the latter model mechanisms have been suggested by different researchers, including a normal continental arc (Jahn et al 1990;Charvet et al 1994;Martin et al 1994;Lan et al 1996;Lapierre et al 1997), shallow subduction and roll-back (Zhou and Li 2000;Zhou et al 2006), and foundering of a flat-subducting slab followed by slab roll-back .…”