Tectonic history of the Irtysh shear zone (NE Kazakhstan): New constraints from zircon U/Pb dating, apatite fission track dating and palaeostress analysis

SHRIMP U–Pb, Ar–Ar and fission-track geochronology of W–Mo deposits in the Balkhash Metallogenic Belt (Kazakhstan), Central Asia, and the geological implications

“…The AFT ages overlap with the timing of exhumation of the deposits of the Junggar Basin in northern Xinjiang, between $135 Ma and $67 Ma Li et al, 2010). The time range is also similar to AFT ages in the Altai Mountains in northern Xinjiang, ($134 to $60 Ma; Yuan et al, 2006), the Irtysh shear zone ($100 to $70 Ma; Glorie et al, 2012), and the Siberian Altai Mountains ($150 to $60 Ma; De Grave et al, 2007). The thermal history model shows no mixing between younger and older events, but indicates an episode of fast cooling in the Late Cretaceous (cf., Glorie et al, 2012).…”

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

“…Abrajevitch et al, 2008;Buslov et al, 2003b;Choulet et al, 2011Choulet et al, , 2012Choulet et al, , 2013Korobkin and Buslov, 2011;Levashova et al, 2012;Van der Voo et al, 2006;Wang et al, 2007). The Talas-Ferghana Fault (TFF; Rolland et al, 2013), the Irtysh Shear Zone (ISZ) (Buslov et al, 2004;Glorie et al, 2012b) and the Chingiz-Alakol-North Tien Shan shear zone (CANTF; Choulet et al, 2011) are important examples of such strike-slip systems near our study area (Figs. 1 and 2).…”

“…Jolivet et al, 2010Jolivet et al, , 2013aJolivet et al, , 2013bMetelkin et al, 2010;Wilhem et al, 2012 and references therein). In the southern Altai Mountains, several AFT studies point to a Late Jurassic-Cretaceous basement cooling event, which is generally linked to both the Mongol-Okhotsk and the Cimmerian Orogeny during the Mesozoic (Cogné et al, 2005;De Grave et al, 2007Glorie et al, 2012aGlorie et al, , 2012bHalim et al, 1998;Yuan et al, 2006). However, most authors favor the Mongol-Okhotsk Orogeny and subsequent collapse as the main driving force for the Late Jurassic-Cretaceous cooling and denudation in the Altai, given the more proximal location of the Altai to the Mongol-Okhotsk collision zone.…”

“…A lot of studies demonstrate that Mesozoic deformation in the Tien Shan and Altai was periodical (e.g. Dumitru et al, 2001;Glorie et al, 2011bGlorie et al, , 2012bHendrix et al, 1992;Jolivet et al, 2010;Yang et al, 2015). For example, Choulet et al (2013) correlated Mesozoic episodes of strike-slip faulting and coarse-grained detrital sedimentation in the South Junggar Basin with rotational movements between Kazakhstan, Junggar, Tarim and Siberia, which can be seen as effects of the Cimmerian collisions at the southern Eurasian margin.…”

“…Hendrix et al, 1992;Shen et al, 2012;Zhou et al, 2008) and the southern Altai (e.g. Glorie et al, 2011aGlorie et al, , 2012aGlorie et al, , 2012bTong et al, 2014) has augmented our knowledge of the broader region, still little is known about the geodynamic evolution of the IBB, and absolute age data from the border zone of the aforementioned terranes is lacking. In this perspective, we present twenty-two new ages (8 zircon U-Pb and 14 apatite fission-track ages) from basement samples collected around the IBB in SE Kazakhstan.…”