The Wulanmoren Accretionary Complex Unravels Early Devonian to Late Triassic Multiple‐Arc Amalgamation in the Tianshan Orogen (NW China)

Abstract

The Altaids, also known as the Central Asian Orogenic Belt, lie between the Siberian and Baltic cratons to the north, and the Tarim and North China cratons to the south (Figure 1a). They are the largest accretionary orogenic collage on the planet, recording the world's highest rate of continental growth in the Phanerozoic (Jahn et al., 2000;Şengör et al., 1993;Wilhem et al., 2012;Windley et al., 2007). The Altaids comprise extensive outcrops of ophiolites, blueschists, eclogites, and schist-gneiss complexes, interpreted to be the remnants of island arcs, seamounts and oceanic plateaus, and microcontinents accreted during progressive subduction and consumption of the Paleo-Asian Ocean (

Late Permian‐Early Triassic intracontinental tectonic inversion in the Junggar Basin, NW China: New insights from detrital zircon geochronology and seismic reflection data

“…The Sr-Nd isotopic signatures of Late Carboniferous igneous rocks and the emplacement of post-accretionary granite plutons in a Late Carboniferous ophiolite belt are evidence for final closure of the North Tianshan Ocean before the Late Carboniferous (Han et al, 2010;Tang et al, 2012). However, Permian-Early Triassic subduction-related magmatic rocks, marine basin fill, and provenance analysis of Permian-Triassic sedimentary rocks have been interpreted as evidence for Triassic final closure (Chen et al, 2019;Zhang et al, 2007;Zhao et al, 2023).…”