The high K2O volcanism of northwestern Tibet: Geochemistry and tectonic implications

Erosion in northwest Tibet from in‐situ‐produced cosmogenic 10Be and 26Al in bedrock

“…Samples 02KE08-02KE12 are from the surface of a lava mesa, 220 km 2 in size (Figure 2c). The K-Ar ages we obtained for the lava mesa range between 4·9 and 5·5 Ma, consistent with those reported in the literature (Arnaud et al, 1992). Quartz exists as xenocrysts in the lava.…”

Cenozoic Mg-rich potassic rocks in the Tibetan Plateau: Geochemical variations, heterogeneity of subcontinental lithospheric mantle and tectonic implications

“…This suggests a crustal component was responsible for metasomatism of the SCLM source region (Arnaud et al, 1992;Turner et al, 1993Turner et al, , 1996Deng, 1998;Miller et al, 1999;Williams et al, 2001Williams et al, , 2004Ding et al, , 2006Ding et al, , 2007Guo et al, 2006;Gao et al, 2007aGao et al, , 2007b. How and when the enriched crustal component became important in the source of Tibetan MPR is a hotly debated topic (Turner et al, 1996;Miller et al, 1999;Williams et al, 2001Williams et al, , 2004Ding et al, , 2007Guo et al, 2006;Gao et al, 2007aGao et al, , 2007bZhao et al, 2009a).…”

Shoshonites in Southern Tibet Record Late Jurassic Rifting of a Tethyan Intraoceanic Island Arc

“…They have been reported from numerous locations across the Tibetan Plateau (Arnaud et al 1992;Turner et al 1993Turner et al , 1996Miller et al 1999;Williams et al 2001Williams et al , 2004Nomade et al 2004;Chung et al 2005). Previously reported rocks are all of continental affinity, and most are Late Cenozoic.…”