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Dating the Hemudu Neolithic rice cultivation site, East China, by paleomagnetic chronostratigraphy
Zheng, Yan1,5; Zheng, Hongbo2,6; Guo, Qianying1; Yang, Qing2; Hu, Zhujun4; Yao, Xinya4; Zhou, Xinying1,5; Zhao, Keliang1,5; Li, Xiaoqiang1,5; Deng, Chenglong3
2021-05-01
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号569期号:0页码:12
摘要Hemudu is a famous archaeological site with the earliest rice remains unearthed in East China and represents a classic example of how Neolithic people managed coastal farmland. However, appreciation of human adaptation to Holocene sea-level changes has been hampered by low-resolution chronology due to lack of datable materials in coastal sediments. Correlation of paleomagnetic directions and intensity on a regional scale provides independent relative dating of such sediments. We did high-resolution paleomagnetic chronology work on core HMD13 (27 m in length) from Hemudu Neolithic site and discussed relevant early Holocene paleoclimate change of Southern China. Magnetic minerals identified by scanning electron microscopy are magnetite, iron-bearing silicates, and iron sulfide (pyrite or greigite). Rock magnetic measurements indicate that the primary remanence carrier is single-domain magnetite. Stepwise alternating field (AF) demagnetization experiments at 1 cm intervals on U-channel samples show that paleomagnetic inclinations fluctuate around 60 degrees, with five major peaks and four troughs. A relative paleointensity (RPI) was estimated using normalizing natural remanent magnetization intensity to anhysteretic remanent magnetization over 20-40 mT AF range, which has four major peaks. Variations of inclination and RPI in core HMD13 resemble the data from the East China Sea and allowed the development of a refined age-depth model. The new adjusted age-depth model minimized dating errors of C-14 ages among different datable materials. From the new age model, inclination and RPI of HMD13 are comparable to paleosecular variation (PSV) stack from East Asia and predicted results from geomagnetic models. Four cold events in the early Holocene recorded by geochemical proxies imply that sedimentary sequence of core HMD13 was influenced by global paleoclimate variation, while its long-term trend points to local paleoenvironmental change. Increases in sedimentation rates and the marine-derived sediment fractions suggest a massive transgression in the early Holocene (9-7.5 ka). Subsequently, ancient people developed and built pile dwellings since similar to 7 ka and cultivated wild rice from similar to 6.3 ka. Our study demonstrates that regional stratigraphic correlation with well-dated PSV and RPI records is a practical approach to establishing reliable age-depth models. A high-resolution chronology on continuous sedimentary sequence has excellent potential to elucidate prehistoric human-environment co-evolution.
关键词Holocene Hemudu Neolithic East Asia Paleomagnetic secular variation Relative paleointensity
DOI10.1016/j.palaeo.2021.110297
收录类别SCI
语种英语
资助项目National Natural Science Foundation of China (NSFC)[41472146] ; National Basic Research Program of China[2015CB953800] ; National Natural Science Foundation of China (NSFC)[41974079] ; National Natural Science Foundation of China (NSFC)[41772369] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26030401] ; Natural Science Foundation of Jiangsu Province[BK20150065]
WOS研究方向Physical Geography ; Geology ; Paleontology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号WOS:000636767300003
出版者ELSEVIER
引用统计
文献类型期刊论文
条目标识符http://119.78.100.205/handle/311034/18508
专题中科院古脊椎所(2000年以后)
通讯作者Zheng, Yan
作者单位1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
2.Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Nanjing Normal Univ, Sch Geog, Nanjing, Peoples R China
5.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
6.Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia
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Zheng, Yan,Zheng, Hongbo,Guo, Qianying,et al. Dating the Hemudu Neolithic rice cultivation site, East China, by paleomagnetic chronostratigraphy[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2021,569(0):12.
APA Zheng, Yan.,Zheng, Hongbo.,Guo, Qianying.,Yang, Qing.,Hu, Zhujun.,...&Deng, Chenglong.(2021).Dating the Hemudu Neolithic rice cultivation site, East China, by paleomagnetic chronostratigraphy.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,569(0),12.
MLA Zheng, Yan,et al."Dating the Hemudu Neolithic rice cultivation site, East China, by paleomagnetic chronostratigraphy".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 569.0(2021):12.
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