%0 Journal Article
%T Eolian origin of the Miocene loess-soil sequence at Qin’an, China: Evidence of quartz morphology and quartz grain-size
%A Jinfeng Liu
%A Zhengtang Guo
%A Yansong Qiao
%A Qingzheng Hao
%A Baoyin Yuan
%A <br>LIU
%A Jinfeng
%A GUO
%A Zhengtang
%A QIAO
%A Yansong
%A HAO
%A Qingzheng
%A YUAN
%A Baoyin
%J 科学通报(英文版)
%D 2006
%I 
%X Recent study revealed that the so-called Neogene Gansu System in the western Loess Plateau contains loess-soil sequences of Miocene age. A most complete sequence （QA-I） covers a time interval from ～22 to ～.6.2 Ma BP, consisting of more than 230 visually definable paleosols interbedded with loess layers. A loess-soil sequence of late Miocene-Pliocene age, synchronous with the Hipparian Red Clay in the eastern Loess Plateau, was also recognized, and extends the Miocene sequences into the Pliocene, ～3.5 Ma BP. Recently, Miocene eolian deposits were also reported from the high terraces near Xining.
%K 石英
%K 形态
%K 尺寸
%K 中新世
%K 黄土
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=F7061717115161571B712E1EAD7AF4B3&yid=37904DC365DD7266&vid=987EDA49D8A7A635&iid=CA4FD0336C81A37A&sid=7555FB9CC973F695&eid=2B5DE8A23DCEED39&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=16