The association of mafic–ultramafic intrusions and A-type magmatism in the Tian Shan and Altay orogens, NW China: Implications for geodynamic evolution and potential for the discovery of new ore deposits

The Early Permian Tarim Large Igneous Province: Main characteristics and a plume incubation model

“…In recent years, a mantle plume model has been variably adopted to explain the generation of the Tarim basalts Pirajno et al, 2008Pirajno et al, , 2009Qin et al, 2011;Tian et al, 2010;Wei et al, 2014;Yu et al, 2011b;Zhang et al, 2008aZhang et al, , 2010bZhou et al, 2009), but is only loosely constrained. In the paragraphs below, the role of mantle plumes in the generation of the Tarim LIP is discussed in detail.…”

Confirmation of ultrahigh-temperature metapelitic granulite in the Altay orogen and its geological significance

“…For instance, the post-orogenic or anorogenic Lamazhao granite and Fuyun granitic dykes were respectively intruded at 276 Ma and 275 Ma [26,27], and they were derived from underplating of post-orogenic mantle-derived mafic magma [30], whilst the Kalatongke mafic intrusive complex (287 Ma) in Fuyun County was also considered to have formed during underplating of mantle-derived magma in a post-orogenic extensional setting [31]. All these support that a Permian mantle plume activity (*275 Ma) existed in the Altay region [29,44]. Therefore, the Altay UHT metamorphic event could be closely associated with magmatic underplating and extensional heating of lower crust caused by the Permian Tarim mantle plume.…”

Implications from zircon-saturation temperatures and lithological assemblages for Early Permian thermal anomaly in northwest China

“…1a). Tectonic evolution of the North Xinjiang during the Paleozoic is built mainly based on geologic studies on these terranes (Gao et al, 2011;Han et al, 1997Han et al, , 2011Hu et al, 2000;Wang et al, 2006Wang et al, , 2010Xiao et al, 2009;Zhou et al, 2008 Pirajno et al (2008) and Jahn et al (2000)) and distribution of samples used for estimation of zircon saturation temperature. b: Tectonic stages in the main terranes from northern Xinjiang.…”

“…However, considerable debates were raised recently focusing on tectonics of southern CAOB during Early Permian (Han et al, 1997(Han et al, , 2011Xiao et al, 2009). Available models that interpret deep dynamic process during Early Permian include continuous southward accretion between Siberia and Tarim block (Xiao et al, 2009), post-collisional collapse under extensional environment (Han et al, 1997(Han et al, , 2011 and plume activity in northern Xinjiang (Borisenko et al, 2006;Pirajno et al, 2008;Su et al, 2011;Zhang et al, 2010a,b;Zhou et al, 2004).…”