Geochemical data and zircon ages for rocks in a high-pressure belt of Chu-Yili Mountains, southern Kazakhstan: Implications for the earliest stages of accretion in Kazakhstan and the Tianshan

Late-Paleozoic emplacement and Meso-Cenozoic reactivation of the southern Kazakhstan granitoid basement

“…These numerous early Paleozoic accretion-collision events and associated magmatic episodes gave rise to the formation of the Kazakhstan paleocontinent by the late Silurian (Alexeiev et al, 2011;Bazhenov et al, 2012;Biske et al, 2013;Filippova et al, 2001;Korobkin and Buslov, 2011;Wilhem et al, 2012;Windley et al, 2007;Xiao et al, 2010;Zhao and He, 2013). As a result, early Paleozoic granitoids associated with the collision-accretion events constructing the Kazakhstan paleocontinent, can be found across the Kazakhstan and NTS basement (e.g.…”

“…The basement of SE Kazakhstan, and in particular the Ili-Balkhash study area, can be subdivided into different structural units based on Alexeiev et al (2011), Kröner et al (2013) and Windley et al (2007) (Fig. 3a).…”

Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

“…Similar granitoids in the SYGB and CTGB provided zircon U-Pb ages of 523-424 Ma and 479-416 Ma, respectively (Gao et al, 2009b;Han et al, 2004;Li, 2011a;Long et al, 2007b;Qian et al, 2009;Shi et al, 2007;XBGMR, 1993;Xu et al, 2010;Yang and Zhou, 2009;Yang et al, 2006;Zhu et al, 2006). In addition, several early Paleozoic magmatic belts have recently been documented in neighboring regions such as the Kyrgyz northern Tianshan (470-472 Ma) and the East Kyrgyz Range (449-451 Ma) (Kröner et al, 2012), the Kyrgstan Northern Tianshan (441-461 Ma) (Kröner et al, in press, 2013b), as well as the Chun-Yili Mountain (475-508 Ma) (Alexeiev et al, 2011). These Pearce, 1995Pearce, , 2008.…”

Middle-Late Ordovician arc-type plutonism in the NW Chinese Tianshan: Implication for the accretion of the Kazakhstan continent in Central Asia

“…Different from cratonic blocks such as Siberia and Tarim, the Kazakhstan comprises a number of continental fragments with Precambrian basement and Early Paleozoic island arcs. These constituents are separated from each other by several accretionary complexes of dominantly Early Paleozoic ages Biske and Seltmann, 2010;Alexeiev et al, 2011). The final amalgamation of the Kazakhstan was considered to have accomplished in Ordovician -Silurian (e.g., Zonenshain et al, 1990;Windley et al, 2007;Biske and Seltmann, 2010).…”