cm 0cm 0pt" class=MsoNormal><FONT face="Times New Roman">ck; FONT-SIZE: 14pt; mso-font-kerning: 18.0pt; mso-bidi-font-weight: bold" lang=EN-US>Sedimentological and Climatic Significances of Yuxi Profile in Fengdu, ce prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />Chongqing, ce w:st="on">ceName w:st="on">SichuanceName> ceType w:st="on">ProvinceceType>ce>ce prefix = o ns = "urn:schemas-microsoft-com:office:office" />

• 责任者：Shi Wei (Nanjing Institute of Geography and Limnology ; Chinese Academy of Sciences ; Nanjing 210008 ; China) ; Zhu Cheng
• 刊名：Acta Sedimentologica Sinica
• 出版年：2010
• 卷期：28(1)
• 关键词：全新世 ; Holocene ; 古气候 ; paleoclimate ; 重庆 ; Chongqing
• 页码：p.176-182
• 图表：2 illus., 2 tables, 46 refs.
• 分类号：1400
• issnNo：ISSN1000-0550
• isbnNo：CN62-1038/P

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cm 0cm 0pt" class=MsoNormal>FONT-SIZE: 14pt" lang=EN-US>ce="Times New Roman">Based upon AMSce prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />chmetcnv w:st="on" TCSC="0" NumberType="1" Negative="False" HasSpace="False" SourceValue="14" UnitName="C">¹⁴Cchmetcnv> dating (calibrated CY) and inferred dating by archaeological relics, the layers of Yuxi profile in Fengdu, Chongqing can be confirmed a basically sequential deposition during approximately 8 500cii-font-family: ’Times New Roman’; mso-hansi-font-family: Arial">～ce="Times New Roman">4 800 aBP. There is a sharp contrast between the under-part alternating layers consisting of silt-sand and deluvium (31cii-font-family: ’Times New Roman’; mso-hansi-font-family: Arial">～ce="Times New Roman">10 layers) and the upper deluvium (9cii-font-family: ’Times New Roman’; mso-hansi-font-family: Arial">～ce="Times New Roman">3 layers), which reflects that the sediment sources and environment changed in the past. The research suggests that, the consistency of sedimental structure and curvilinear characteristics of proxy Rb and Sr indicators reveals that the difference of sediment structure of Yuxi profile is mainly related to the different climate backgrounds; the under-part alternating layers which the accumulation is thicker, the persistent period is shorter and the sedimentary rate is higher are the result of abnormal changes of hydrologic phenomena under the background of unstable climate.ce prefix = o ns = "urn:schemas-microsoft-com:office:office" />