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Deformational History of the Kanguer Subduction Complex in the Eastern by Qigui Mao, Wenjiao Xiao et al

The Kanguer Subduction Complex in the Eastern Tianshan is critical to understanding the tectonic evolution of the southern Altaids as it marks the terminal suture along which the Paleo-Asian Ocean was consumed. However, the nature and timing of this final collision, as well as the mechanism of shearing and related magmatism, remain enigmatic. The Kanguer Subduction Complex demonstrates obvious sinistral transtensional and dextral compressional deformation in different tectonic events along the Qiugemingtash Shear Zone in Huangshan area. Three sets of asymmetric plunging folds (e.g., basin-like, S-shaped and Z(W)-shaped) were recognized in the sedimentary rocks. Locally, the folds are offset by dextral strike-slip faults, indicating that they were formed by dextral shearing. The Huangshandong mafic-ultramafic complex experienced brittle dextral shearing partitioned around the margins of the intrusion. Detrital zircon U-Pb dates for deformed sedimentary rocks have maximum deposit ages (M

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