Timing of exhumation of the Ereendavaa metamorphic core complex (north-eastern Mongolia) – U–Pb and 40Ar/39Ar constraints

Timing and processes of late Mesozoic mid-lower-crustal extension in continental NE Asia and implications for the tectonic setting of the destruction of the North China Craton: Mainly constrained by zircon U–Pb ages from metamorphic core complexes

“…The Ereendavaa MCC was recently recognized in northeastern Mongolia (ED in Fig. 1) (Daoudene et al, 2009(Daoudene et al, , 2011. The footwall rocks consist of amphibolite-facies metamorphic rocks with a flat-lying to gently dipping foliation.…”

Zircon SHRIMP U–Pb dating of metamorphic complexes in the conjunction of the Greater and Lesser Xing’an ranges, NE China: Timing of formation and metamorphism and tectonic implications

“…Secondly, numerous studies demonstrated that regional extension in Russian Transbaikalia, East Mongolia and NE China mostly likely initiated during Late Jurassic (150-145 Ma) and peaked at Early Cretaceous (140-120 Ma), as indicated by occurrences of the Cretaceous metamorphic core complexes (Donskaya et al, 2008;Daoudene et al, 2009Daoudene et al, , 2011Wang T. et al, 2012), the rifting basins (Ren et al, 2002;Meng, 2003;Meng et al, 2003) …”

Late Mesozoic compressional to extensional tectonics in the Yiwulüshan massif, NE China and its bearing on the evolution of the Yinshan–Yanshan orogenic belt

“…Because detailed geochronological work is lacking, the extensional period is imprecisely defined between the 135 and 120 Ma in the Transbaikalia-MongoliaGreat Xing'an range and North margin of the South China block (Figs. 16, 17;Donskaya et al, 2008;Daoudene et al, 2009Daoudene et al, , 2011Zhu et al, 2010;Ji et al, 2011). On the contrary, in the Eastern QinglingDabieshan and Yinshan-Yanshan belt, it seems that the peak of extensional tectonics took place during 130-125 (Fig.…”

“…Namely, 1) west-directed subduction of a Paleo-Pacific plate during the Mesozoic causes intra-or back-arc extension (Watson et al, 1987;Traynor and Sladen, 1995;Ren et al, 2002); 2) roll-back of the westward subducting Paleo-Pacific oceanic plate, and post-orogenic collapse is following the Late Jurassic to Early Cretaceous contraction ; 3) South-Southeast-directed subduction of the Mongol-Okhotsk oceanic plate during the Mesozoic is responsible for extension (Wang et al, 2002); 4) interaction between the Pacific Zorin, 1999); Buteel (Mazukabzov et al, 2006;Donskaya et al, 2008); Nartyn (magmatic dome, Daoudene et al, 2009), Zagan (Donskaya et al, 2008); Ed (Ereendavaa, Daoudene et al, 2009Daoudene et al, , 2011; Cb (Central basement uplift of Songliao basin, Zhang et al, 2000); Xy (Xiuyan magmatic dome, Lin et al, 2007); Yg (YaganOnch Hayrhan, Zheng et al, 1991;Webb et al, 1999); Hohhot (Davis et al, 2002;Davis and Darby, 2010); Kl (Kalaqin magmatic dome, Han et al, 2001); Ym (Yunmengshan, Zheng et al, 1991;Davis et al, 1996Davis et al, , 2002; Yw (Yiwulüshan, Darby et al, 2001Darby et al, , 2004Lin and Wang, 2006); Xs (Xishan pluton, Wang et al, 2011c); Gd (Gudaoling syntectonic granite, Guan et al, 2008;Lin et al, 2011); Sl (South Liaodong Peninsula, Yin and Nie, 1996;Liu et al, 2005;Lin and Wang, 2006;Lin et al, 2008); Np (Nampho magmatic dome, Wu et al, 2007); Lg (Linglong-Guojialing complex dome, Charles et al, 2011); Jn (Jiaonan extensive dome, Hacker et al, 2009)…”

“…The times of formation of the metamorphic complexes and domes are indicated to reflect the active time of detachment fault. Information partly fromDaoudene et al (2011), additional information of extensional dome, syntectonic pluton, detachment fault and extensional basins from the same reference as inFig. 16.…”