“…The Alxa Terrane is located to the south of the Central Asian Orogenic Belt (Windley et al, 2007;Xiao et al, 2010;Safonova et al, 2011;Yarmolyuk et al, 2012;Feng et al, 2013;Kröner et al, 2014;Zheng et al, 2014). The Ordos Terrane (North China Terrane) lies to the east, separated from the Alxa Terrane by the Mesozoic Helan Shan thrust belt which was caused by the eastward compression of the Alxa Terrane (Liu, 1998;Darby and Ritts, 2002).…”