Plio-Pleisatocene environmental changes in Java and hominind evolution and dispersion

爪哇岛的上更新世环境变化以及原始人类的进化和扩散

• 批准号: 15403015
• 负责人: HYODO Masayuki
• 金额: $ 9.02万
• 依托单位: Kobe University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15403015/
• 关键词: Paleoenvironment; Plio-Pleistocene; Java; Homo erectus; Environmental magnetism; Paleomagnetism; Quaternary; 松山-ブリュンヌ地磁気逆転; 天体衝突イベント; 磁気層序; 地磁気逆転

Javan hominid fossils are important to study hominid dispersion, namely "Out-of-Africa" problem. However, their ages have not been established, and still disputed. In this study, we reconstructed paleoenvironmental changes from the Sangiran hominid fossil-bearing formation, central Java, and discuss the relationship between hominid dispersion and environment changes. In addition, a new paleomagnetic dating technique was studied, and tried to apply to the Javan paleomagnetic stratigraphy data. The following results were obtained:(1) A technique of environmental magnetism was first applied to the black clay of the Pucangan (Sangiran) Formation in Sangiran, central Java. As a result, we found a large environmental change that occurred just above the T11 tuff horizon, coincided with the occurrence of the earliest Homo erectus fossil in Sangiran. We confirmed the method was valid to the sediments with less content of biological fossils like pollen or diatom, often used for paleoenvironmental study.(2) Detailed paleoenvironmental study with pollen and diatom fossils is difficult because of poor content, except some parts of the Pucangan (Sangiran) Formation.(3) The magnetostratrigraphy data in Sangiran show that the Upper Olduvai transition represents a number of geomagnetic fluctuations. The same field behavior was observed in the Chinese loess in Baoji, south-central China. Thus we confirmed that it is a real geomagnetic feature, and that the magnetostratigraphic correlation by Hyodo et al. (1992; 1993; 2002) is reasonable.(4) We revealed millennial to submillennial-scale features for the Matuyama-Brunhes polarity transition using a 1700-m core from Osaka Bay. The features are utilized to confirm the magnetostratigraphic correlation in Sangiran.

爪哇人科化石是研究人科分布的重要材料，即“出非洲”问题。然而，他们的年龄尚未确定，仍然存在争议。在这项研究中，我们重建了古环境变化的Sangiran人科化石轴承形成，中爪哇，并讨论人科分散和环境变化之间的关系。此外，还研究了一种新的古地磁测年技术，并尝试应用于爪哇古地磁地层学数据。（1）首次将环境磁学技术应用于中爪哇Sangiran地区Pucangan组黑色粘土中。结果，我们发现了一个大的环境变化，发生在T11凝灰岩层之上，与桑吉兰最早的直立人化石的出现相吻合。证实了该方法对孢粉、硅藻等生物化石含量较少的沉积物是有效的。(2)除了Pucangan组（Sangiran组）的某些部分外，由于花粉和硅藻化石含量少，很难进行详细的古环境研究。(3)Sangiran的磁层测量数据表明，上奥杜威过渡代表了一些地磁波动。在中国中南部宝鸡的黄土中也观察到了同样的田间行为。从而证实了这是一个真实的地磁特征，证明了兵户等（1992; 1993; 2002）的磁性地层对比是合理的。(4)我们揭示了千年到千年尺度的功能Matuyama-Brunhes极性转换使用1700米的核心从大坂湾。这些特征被用来确定Sangiran的磁性地层对比。

项目成果

Millennial‐ to submillennial‐scale features of the Matuyama‐Brunhes geomagnetic polarity transition from Osaka Bay, southwestern Japan

• DOI: 10.1029/2004jb003584
• 发表时间: 2006-02
• 期刊: Journal of Geophysical Research
• 作者: M. Hyodo;Dipzli K. Biswas;Takako Noda;N. Tomioka;T. Mishima;C. Itota;Hiroshi P. Sato

古地磁気層序、デジタルブック最新第四紀学

古地磁地层学，最新第四纪研究数字书籍

• 发表时间: 2007
• 作者: Yang;T.S.;加藤茂弘;松浦秀治;松浦秀治;兵頭政幸
• 通讯作者: 兵頭政幸

Early and middle Matuyama geomagnetic excursions recorded in the Chinese loess-paleosol sediments

中国黄土-古土壤沉积物记录的早、中期松山地磁偏移

• DOI: 10.1186/bf03352745
• 发表时间: 2007-07
• 期刊: Earth Planets and Space
• 影响因子: 3
• 作者: Mishima, Toshiaki;Yang, Tianshui;Yang, Zhenyu;Hyodo, Masayuki;Fu, Jianli;Ding, Lin
• 通讯作者: Ding, Lin

火山灰のフィツション・トラック年代と古地磁気層序に基づく淡路島中部の鮮新-更新統境界の再検計

基于火山灰裂变径迹年龄和古地磁地层学重新审视淡路岛中部上里奥-更新世边界

• 发表时间: 2004
• 期刊: 第四紀研究 43巻・3号
• 作者: Yang;T.S.;加藤茂弘
• 通讯作者: 加藤茂弘

人類の進化と拡散-古地磁気学的検証

人类的进化与传播——古地磁验证

• 发表时间: 2005
• 期刊: 地学雑誌 114
• 作者: S.EINO;J.TAKASHIMA;Masahide MORI;the others;兵頭政幸
• 通讯作者: 兵頭政幸