Comment on “Mudflat/distal fan and shallow lake sedimentation (upper Vallesian–Turolian) in the Tianshui Basin, Central China: Evidence against the late Miocene eolian loess” by A.M. Alonso-Zarza, Z. Zhao, C.H. Song, J.J. Li, J. Zhang

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• 作者：Z.T. Guo ; J.Y Ge ; G.Q. Xiao ; Q.Z. Hao ; H.B. Wu ; T. Zhan ; L. Liu ; L. Qin ; F.M. Zeng ; B.Y. Yuan
• 关键词：Miocene and Pliocene eolian deposits ; Fan and distal fan sediments ; Asian drying
• 刊名：Sedimentary Geology
• 出版年：2010
• 出版时间：1 October 2010
• 年：2010
• 卷：230
• 期：1-2
• 页码：86-89
• 全文大小：349 K

文摘

Alonso-Zarza et al. (2009) argued that the Miocene sedimentary sequence near Qinan (QA-I) (Guo et al., 2002), north to Tianshui in Central China, represents mudflat/distal fan and shallow lake sediments. Here we show that they (1) did not take into account extensive observational evidence supporting an eolian origin; (2) erroneously correlated deposits of different origins and small lateral extent occurring in different geomorphic units; (3) inferred a common origin for distal fans in the Tianshui and Qinan regions despite contrasting tectonic and geomorphic conditions; and (4) in some cases misinterpreted features typical of eolian deposits. Accordingly, their study is not a sufficient basis for challenging earlier interpretations of Asian paleoclimates.