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Formation Age and Tectonic Setting of the Muli Arc‐Ophiolite Complex in the South Qilian Belt, NW China

The Qilian orogenic belt is the northernmost orogen of the Tethyan domain and connects the Altaids to the north. It contains an assembly of Precambrian micro‐continental fragments, early Paleozoic island arcs, accretionary complexes, ophiolites, forearc and backarc basins, and high‐pressure (HP) metamorphic rocks, indicating a long history of accretionary processes. Spatially, this orogen is adjacent to the Tarim, Qaidam, and North China blocks, which also extends into accretionary orogenic belts to the east and SW such as the Qinling and Kunlun belts. Abundant ophiolites in this orogen record the closure of an early Tethyan Ocean and amalgamations between micro‐continents of North China, Qaidam, and Tarim. Thus, the ages and tectonic settings of these ophiolites within this belt provide important information regarding evolution of the Proto‐Tethys Ocean and assembly of micro‐continental blocks, which aids understanding of the spatial and temporal relationship of this orogen within the Tethyan realm.