Structural style and metamorphic conditions of the Jinshajiang metamorphic belt: Nature of the Paleo-Jinshajiang orogenic belt in the eastern Tibetan Plateau

Provenance and tectonic-paleogeographic evolution: Constraints from detrital zircon U–Pb ages of Late Triassic-Early Jurassic deposits in the northern Sichuan basin, central China

“…The Sichuan basin began to take shape during the Early Mesozoic Indosinian orogeny when the northwestern margin of the SCB collided with the SGT (Hsü et al, 1988;Wan, 2010). Subsequent Indosinian collisions of the SCB with NCB on the north, with Qiangtang block on the west and with Indochina block on the southwest (e.g., Cao et al, 2015;Qiu et al, 2016) firmly amalgamated the SCB to the Eurasian plate (Dong et al, 2015). Finally, compressional tectonism during the Late Mesozoic Yanshanian orogeny and the Cenozoic Himalayan orogeny terminated the conversion of the stable marine carbonate platform to a continental basin.…”

“…The closure of the eastern branches of the Paleo-Tethys Ocean in the Late Triassic, by convergence of the SCB to the south, the NCB to the north, the Qiadam block to the northwest, and the Qiangtang block to the southwest, formed the main part of present-day central China (Cao et al, 2015;Ding et al, 2013). Herein, the Sichuan basin, which occupies the western portion of the SCB (Fig.…”

Geochronology of early Mesozoic diabase units in southwestern China: metallogenic and tectonic implications

“…The Triassic Indosinian orogeny is a key part of the tectonic history of the eastern Palaeo-Tethys and resulted from the amalgamation of the South China and Indochina blocks (e.g. Lepvrier et al 2011;Faure et al 2014Faure et al , 2016aCao et al 2015;Halpin et al 2016). This orogeny was originally identified from Late Triassic angular unconformities in Vietnam (e.g.…”

Mineral phase equilibria and zircon geochronology constrain multiple metamorphic events of high‐pressure pelitic granulites in south‐easternTibetan Plateau

“…SHRIMP U–Pb analyses of zircons from these rocks yielded a metamorphic age of 230.5 ± 8.2 Ma (Zhang et al, ). To the north of ALS complex, W. T. Cao, Yan, Qiu, Zhang, and Qiu () reported the Triassic 40 Ar/ 39 Ar age of white mica from a garnet schist in the Barrovian sequence of Jinshajiang metamorphic belt. In the Day Nui Con Voi Complex, Nakano, Osanai, Nam, and Tri () reported Permian–Triassic metamorphic ages (265 ± 11 to 243 ± 8 Ma) in aluminous granulites that contain high‐pressure mineral inclusions of kyanite, staurolite, and rutile.…”