Late-Miocene palaeoecological evolution of the Tianshui Basin, NE Tibetan Plateau: Evidence from stable organic carbon isotope record

Phylogeography of Schizopygopsis stoliczkai (Cyprinidae) in Northwest Tibetan Plateau area

“…The age of the most recent ancestor of clade S and clade N was estimated at about 4.27 Mya, following by the divergence between the Lake Pangong group and the Shiquan River group as well as between the Karakash River group and the Shiquan River group. The molecular date estimates obtained in the present study corresponded well with the hypothesis that the formation of the QTP underwent the upheaval, flaunting, and the recent uplift (Hou et al, 2015;Li et al, 2014). Meanwhile, both in mtDNA ( Figure 4) and nuclear sequences (Appendix S2), seven populations within clade S shared the common haplotypes and lacked the population structures, which were probably results from the repeated separation and the connection of drainages in the South Basin due to the glacial-interglacial cycles and/or tectonic movement during the Quaternary period (Bingyuan, Fubao, Yichou, & Qingsong, 1982;Yang & Scuderi, 2010;Zou & Dong, 1992).…”

“…Harrison & Copeland (1992) and Lippert et al (2014) suggest that the rapid uplifting of TP begin at about 20 Mya and the present elevation of the TP be reached by about 8 Mya. Alternatively, Cui et al (1998) and Li et al (2014;Hou, Li, Song, Meng, & Zhang, 2015) state that the TP reaches its maximum height before 8 Mya followed by the extensively faulting and a recent rapid uplift occurring at about 3.6 Mya which is accompanied by the formation of the largest glacier in the Northern Hemisphere. Both hypotheses admit the formation of the TP is probably a long-standing topographic process, and the latter emphasizes its recent uplift step in Quaternary (Peng, Ho, Zhang, & He, 2006).…”

An integrated biomarker perspective on Neogene–Quaternary climatic evolution in NE Tibetan Plateau: Implications for the Asian aridification

“…If ACL values mainly reflected temperature, they should have decreased instead of increased since 22 Ma, considering the integrated oxygen isotope data (Zachos et al, 2001). In addition, the organic carbon isotope data from the Maogou (Fang and Ma, 2010) and Yanwan sections (Hou et al, 2015) indicate that C 3 vegetation dominated the major ecosystem and the C 4 percentage may be ignored in the Miocene. ACL variation may be caused by aridity, but not vegetation change.…”