The Neogene history of environmental change in the Kenya Rift : Contribution to deciphering of evolution from ape to early hominid
肯尼亚裂谷的新近纪环境变化史:对破译从猿到早期原始人类进化的贡献
基本信息
- 批准号:14253006
- 负责人:
- 金额:$ 20.97万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (A)
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2005
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The research results of the project are summarized as follows ;(1)On the basis of K-Ar ages and magnetostratigraphy, the Lukeino Formation (Fm) which yielded the earliest hominid Orrorin tugenensis accumulated between 6.0Ma and 5.7Ma.(2)The anorthoclase K-Ar ages from tuff layer yielding Nacholapithecus are 16.36±0.37Ma to 15.27±0.47Ma. Combined K-Ar ages and magnetostratigraphy of the Aka Aiteputh and Namurungule Fms in Samburu Hills, indicates that the hominoid fossil Sambrupithecus kiptalami occurs in the normal polarity zone, which is correlated with C4Ar.2n (ca.9.6Ma).Drastic environmental change occurred around 10Ma between the Aka Aiteputh Fm phase and subsequent Namurungure Fm phase which is sharply recorded in the sediment succession.(3)The age of lahar deposit layer yielding Kenyapithecus in the Fort Ternan area was dated 13.7 Ma based on the anorthoclase K-Ar and ^<40>Ar-^<39>Ar ages from phonolite lavas which sandwiched the fossil layer.(4)Earliest Late Miocene hominoid, which is very important for understanding on the evolution from great ape to human, and mammalian fossils were discovered from the lahar deposits of the Nakali Fm. The Nakali Fm consists mainly of lake and fluvial deposits with tuff and lapilli tuff beds including volcanic mud flow and pyroclastic flow deposits. Combined with the ^<40>Ar-^<39>Ar ages and magnetostratigrapy, the age of the Nakali Fm ranges from 10.1Ma to 9.8Ma (within Chron C5n.2n to C5n.1n).(5)Research of middle Miocene trachyte-phonolite flood volcanism in the whole Kenya rift ; geology, K-Ar age determination with magnetostratigraphy, petrography and geochemical characteristics.(6)Comparative geochemical studies on modern lacustrine sediments from the five lakes in the Kenya rift, and sedimentary rocks 16 to 5Ma.(7)Publications to journals and book (20 papers). The symposium was held at the annual meeting of Geological Society of Japan.
本项目的研究成果总结如下:(1)根据K-Ar年龄和磁地层特征,最早的古人类Orrorin tugenensis出现在Lukeino组(Fm)的沉积时间为6.0Ma ~ 5.7Ma。(2)产Nacholapithecus凝灰岩层斜长石K-Ar年龄为16.36±0.37Ma ~ 15.27±0.47Ma。结合Samburu Hills Aka Aiteputh组和Namurungule组的K-Ar年龄和磁地层学,表明Sambrupithecus kiptalami类人化石出现在正极性带,与C4Ar相关。2 n (ca.9.6Ma)。在10Ma前后,阿卡Aiteputh Fm期与随后的namurunure Fm期之间发生了剧烈的环境变化,这在沉积物演替中有明显的记录。(3)根据夹在化石层上的斜长岩K-Ar和^<40>Ar-^<39>Ar年龄,确定了Fort Ternan地区产Kenyapithecus火山泥流沉积层的年龄为13.7 Ma。(4)在Nakali组火山泥流沉积物中发现了最早的晚中新世古人类化石和哺乳动物化石,这些化石对认识类人猿到人类的演化具有重要意义。Nakali组主要由湖泊和河流沉积组成,其中包括凝灰岩和珍珠状凝灰岩床,包括火山泥流和火山碎屑流沉积。结合^<40>Ar-^<39>Ar年龄和磁地层特征,推测Nakali Fm的年龄范围为10.1 ~ 9.8Ma(在Chron C5n)。2n到5n, 1n)。(5)整个肯尼亚裂谷中新世中粗面岩-phonolite洪水火山作用研究;用磁地层学、岩石学和地球化学特征测定钾氩年龄。(6)肯尼亚裂谷五湖现代湖相沉积与16 ~ 5Ma沉积岩地球化学对比研究。(7)发表期刊、书籍(论文20篇)。研讨会在日本地质学会年会上举行。
项目成果
期刊论文数量(126)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Depositional environment change of the lake Naivasha and Bogoria distributed in the Kenya Rift.
肯尼亚裂谷内分布的奈瓦沙湖和博戈里亚湖的沉积环境变化.
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Tanaka;S.;Seto;K.;Mathai;S.;Nakamura;K.;Sawada;Y.
- 通讯作者:Y.
Refinement of the age of the Middle Miocene Fort Teman Beds, western Kenya, and its implications for Old World biochronology.
肯尼亚西部中中新世特曼堡床层年龄的细化及其对旧世界生物年代学的影响。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:Pickford;M.;Sawada;Y.;Tayama;R.;Matsuda;Y;Itaya;T.;Hyodo;H.;Senut;B.
- 通讯作者:B.
Late Cenozoic mammalian biostratigraphy and faunal change : Paleoenvironments of hominoid evolution and dispersal.in"Human Origins and Environmental Backgrounds(eds.Ishida,H.etal.)"
晚新生代哺乳动物生物地层学和动物区系变化:人科动物进化和扩散的古环境。在“人类起源和环境背景(编辑石田,H.等人)”
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Nakaya;H.;Tsujikawa;H.
- 通讯作者:H.
The age and geological background of Nacholapithecus, Samburupithecus and Orrorin tugenensis, Kenya.
肯尼亚 Nacholapithecus、Samburupithecus 和 Orrorin tugenensis 的年龄和地质背景。
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Sawada;Y;Sakai;T.;Itaya;T.;Hyodo;M.et al.
- 通讯作者:M.et al.
Half graben filling processes in the early phase of continental rifting : The Miocene Namurungule Formation of the Kenya Rift
大陆裂谷早期的半地堑充填过程:肯尼亚裂谷的中新世 Namurungule 地层
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Saneyoshi;M.;Nakayama;K.;Sakai;T.;Sawada;Y.;Ishida;H.
- 通讯作者:H.
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
SAWADA Yoshihiro其他文献
SAWADA Yoshihiro的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('SAWADA Yoshihiro', 18)}}的其他基金
A vegetation ecological study for conservation/restoration of semi natural grassland on ski slope
滑雪场半天然草地保护/恢复植被生态学研究
- 批准号:
21510244 - 财政年份:2009
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Reexamination of ages and geological backgrounds of Paleogene and Miocene in Chugoku District
中国地区古近纪和中新世年龄和地质背景的重新审视
- 批准号:
21540472 - 财政年份:2009
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Simple estimation method of response characteristics in surface layer based on microtremor H/V spectral ratios
基于微动H/V谱比的地表响应特性简易估计方法
- 批准号:
17560423 - 财政年份:2005
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Studies on budget of organic matter in mantle and crust of arc during subduction and magmatism
俯冲和岩浆作用期间弧地幔和地壳有机质收支研究
- 批准号:
13440148 - 财政年份:2001
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on applicability and its limit of microtremor H/V method
微动H/V法的适用性及其局限性研究
- 批准号:
13450185 - 财政年份:2001
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Study on basement of earthquake input motion under the Nobi plain based on earthquake observation
基于地震观测的浓尾平原地震输入运动基底研究
- 批准号:
11555123 - 财政年份:1999
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Spectral characteristics of earthquake input motion on the base rock
基岩地震输入运动的频谱特征
- 批准号:
10650460 - 财政年份:1998
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Comparative study of felsic magmas with explosive or not explosive eruption
爆炸性喷发与非爆炸性喷发的长英质岩浆对比研究
- 批准号:
10440141 - 财政年份:1998
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B).
Geology and petrology of volcanic conduits and lava domes
火山管道和熔岩穹顶的地质学和岩石学
- 批准号:
08640569 - 财政年份:1996
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Temporal and spatial variations of lower crustal material in an island arc --an approach from Mesozoic and Cenozoic igneous rocks and xenoliths in the Inner Zone of Southwest Japan--
岛弧下地壳物质的时空变化——来自日本西南内区中生代和新生代火成岩和捕虏体的研究——
- 批准号:
05402020 - 财政年份:1993
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for General Scientific Research (A)
相似海外基金
Exploring "Actionable Information" for Learning Improvement in Rural East Africa: A Positive Deviance Approach
探索东非农村地区学习改进的“可行信息”:积极偏差方法
- 批准号:
24K00390 - 财政年份:2024
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Leveraging 'Positive Deviance' to improve learning under COVID-19 pandemic. A randomized intervention in rural East Africa
利用“正偏差”改善 COVID-19 大流行期间的学习。
- 批准号:
23K20687 - 财政年份:2024
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Stories from the Substrate: A 20th Century History of East Africa from the Soil
来自底层的故事:从土壤看东非的20世纪历史
- 批准号:
AH/W007568/1 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Fellowship
Practical research on creating a market-oriented agricultural support method that utilizes the potential of indigenous agriculture in East Africa
发挥东非本土农业潜力,创建市场化农业支持方式的实践研究
- 批准号:
23H03618 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Drivers of sub-seasonal and seasonal climate variability over East Africa and Applications to forecasting
东非次季节和季节性气候变化的驱动因素及其预测应用
- 批准号:
2897388 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Studentship
Global Centers Track 2: A multi-disciplinary framework to combat climate-induced desert locust upsurges, outbreaks, and plagues in East Africa
全球中心轨道 2:应对东非气候引起的沙漠蝗虫激增、爆发和瘟疫的多学科框架
- 批准号:
2330452 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Standard Grant
Support for Vector Biology Training for Sustainable Control of Vector Borne diseases in East Africa
支持媒介生物学培训以可持续控制东非媒介传播疾病
- 批准号:
10675897 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Eneza Data Science: Enhancing Data Science Capability and Tools for Health in East Africa
Eneza 数据科学:增强东非健康领域的数据科学能力和工具
- 批准号:
10713044 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Mentorship in patient-oriented research to optimize community-based HIV prevention for adults at high-risk of HIV at alcohol drinking venues in East Africa
指导以患者为导向的研究,以优化东非饮酒场所艾滋病毒高危成年人的社区艾滋病毒预防
- 批准号:
10762303 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Developing capacity for youth disability advocacy through networking in East Africa
通过东非网络发展青年残疾宣传能力
- 批准号:
AH/X009769/1 - 财政年份:2023
- 资助金额:
$ 20.97万 - 项目类别:
Research Grant