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Evidence of Middle Pleistocene hominin migration in the Qinling Mountains(central China)from the Miaokou Paleolithic site

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Journal of Geographical Sciences 2022年第2期32卷 358-374页

作者： LIU Dengke SUN Xuefeng HU Xuzhi YI Liang GUO Xiaoqi WANG Yichao WANG Shejiang LU Huayu School of Geography and Ocean Science Nanjing UniversityNanjing 210023China School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023China State Key Laboratory of Marine Geology Tongji UniversityShanghai 200092China Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyCASBeijing 100044China CAS Center for Excellence in Life and Paleoenvironment Beijing 100044China

The Qinling Mountain Range(QMR)spans a large region in China and is an important area of hominin *** Paleolithic sites are found in Bahe,South Luohe,and Hanjiang river valleys in the northern,eastern,and southern part of the range,*** Danjiang River valley acts as a channel connecting these valleys and stretches from the north to the south of the *** previous dating of the Paleolithic sites in the Danjiang valley mainly relied on geomorphologic comparison,stratigraphic correlation,fossil characteristics,and Paleolithic artifacts,indicating a lack of absolute *** this study,we conducted a detailed geochronological investigation of the entire valley,and selected an ideal site—the Miaokou *** on the identification of the loess-paleosol sequences,optically stimulated luminescence,and magnetostratigraphy,the Paleolithic artifacts of the Miaokou site located within the S5 and S6 layers of the profile belong to~0.6-0.7 *** suggests that the Paleolithic site is an old site in the Danjiang River valley,and this period also witnessed a rapid increase in the number of hominin sites during the Middle *** our results with previous reports across the QMR,we propose that the Danjiang River valley might have been a corridor for hominin migration,and is worthy of further investigation.

关键词： Danjiang River valley Miaokou site loess-paleosol sequence magnetostratigraphy hominin routeway

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Eolian origin of the Miocene loess-soil sequence at Qin'an,China:evidence of quartz morphology and quartz grain-size

Eolian origin of the Miocene loess-soil sequence at Qin'an,C...

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中国科学院地质与地球物理研究所2006学术年会

作者： LIU Jinfeng~1,GUO Zhengtang~(2,1),QIAO Yansong~(3,1),HAO Qingzheng~1 & YUAN Baoyin~1 Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China 2.SKLLQG,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710075,China 3.Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China

Grain-morphology and grain-size distributions of the quartz fraction from the QA-I loess-soil sequence are examined,and compared with those of the typical eolian deposits of Quaternary age from the Xifeng *** of the quartz grains from QA-I section have irregular and angular shapes which are highly similar to those of the Xifeng Quaternary eolian samples,and also to those of the Quaternary and Pliocene eolian deposits ***-size analyses show that the quartz fraction is dominated by the silt fractionloess and finer grain-size in soils,also similar to that of the Quaternary loess-soil *** suggest that the Miocene paleosols are accretionary soils formed in monsoon *** quartz morphological features and grain-size distributions therefore provide new evidence of an eolian origin of the Qin’an Miocene sequences.

关键词： Miocene loess-paleosol sequence quartz grain scanning electron microscopy grain size

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