Triassic collision in the Paleo-Tethys Ocean constrained by volcanic activity in SW China

Reconstructing South China in Phanerozoic and Precambrian supercontinents

“…Proposed links between the Yangtze Block and other continental fragments within Nuna include Western Australia, which is based on the presence of similar ca. 2.3 Ga detrital age peaks (Wang et al, 2012c .…”

“…2), represents a branch, or back-arc basin, of the Paleo-Tethyan Ocean ( Fig. 1; Zi et al, 2012a;Zi et al, 2012c), and was the site for rifting and breakup of the craton from Gondwana (Zi et al, 2012b). The suture zone is a belt up to 30 km wide composed of disrupted and discontinuous Proterozoic to Cenozoic rock units.…”

The closure of Palaeo-Tethys in Eastern Myanmar and Northern Thailand: New insights from zircon U–Pb and Hf isotope data

“…North of eastern Myanmar, in Yunnan, the Nujiang-LancangjiangJishajiang orogenic belts, or collectively the Sanjiang area, are interpreted to mark the Palaeo-Tethyan suture (e.g., Sengör, 1979;Peng et al, 2008;Hennig et al, 2009;Jian et al, 2009;Wang et al, 2010;Zi et al, 2012;Dong et al, 2013) and represent three potential branches of Palaeo-Tethys from west to east respectively. Here are found the presumed northerly extensions of Sibumasu and the Indochina terrane.…”

Age and origin of the Bulangshan and Mengsong granitoids and their significance for post-collisional tectonics in the Changning–Menglian Paleo-Tethys Orogen

“…Dong et al (2013) suggest that the Lincang granite was most likely formed in a transition tectonic setting from syn-to post-collision. In spite of the controversy, most workers consider that the generation of the Middle-Late Triassic magmatism was likely controlled by orogenic process following closure of thePaleo-Tethys (Peng et al, 2006; Hennig et al, 2009; Fan et al, 2009 Fan et al, , 2010Zi et al, 2012bZi et al, , 2013 based on the following lines of evidence. (1) Recent field investigation has identified the presence of Middle Triassic to pre-Triassic angular unconformity in the Baoshan, Simao, and Yunxian-Jinggu Arc terranes, with the Middle Triassic Shanglan Formation overlying pre-Triassic by an angular unconformity (Fig.3), which in turn is overlain by the Late Triassic to Early Jurassic red foreland molasse.…”