Figure 1

Geology and sampling location for this study. (a) Tectonic sketch map of central Asia modified after Yin and Harrison1. Abbreviations: AKMS, Ayimaqin-Kunlun-Muztagh suture; DHS, Danghe Nan Shan suture; FSN, Fenghuo Shan-Nangqian fold and thrust belt; KQT, Kunlun-Qaidam terrane; QTNK, Qimen Tagh-North Kunlun thrust system; NQS, North Qilian Suture; NST, Nan Shan thrust belt; SGA, Shiquanhe-Gaize-Ando thrust system; SGH, Songpan-Ganzi-Hoh Xil terrane; SQS, South Qilian suture; (b) Simplified geological map of the sampling area.