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We provide new field observations and isotopic data for key areas of the Central Asian Orogenic Belt (CAOB), reiterating our previous assessment that no excessive crustal growth occurred during its ca. 800Ma long orogenic evolution. Many Precambrian blocks (microcontinents) identified in the belt are exotic and are most likely derived from the northern margin of Gondwana, including the Tarim craton...
The Chinese Tianshan is the southernmost orogenic terrane located in the long-lived accretionary Central Asian Orogenic Belt. Granitoid rocks are extensively exposed in the Chinese Tianshan, especially in its central part, known as the Chinese Central Tianshan Block (CTB) and therefore recorded the formation of continental crust. However, the tectonic affinity and crustal evolution of the CTB are...
The northwestern Chinese Tianshan is a key part of the southern Central Asian Orogenic Belt. Voluminous arc-related igneous rocks in this region have recorded the opening and closure of several oceanic basins that may represent southern branches of the Paleo-Asian Ocean. We have conducted geochemical, geochronological and Hf-in-zircon isotopic studies on mafic and felsic intrusive rocks in the northwestern...
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