The Chew Bahir Drilling Project: A Half-Million Year Climate Record from the Southern Ethiopian Rift, Crucible of Human Evolution

周巴赫钻探项目：埃塞俄比亚南部裂谷五十万年的气候记录，人类进化的熔炉

• 批准号: 235790747
• 负责人: Professor Dr. Frank Schäbitz
• 金额: --
• 依托单位: Institut für Geographiedidaktik
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/235790747?language=en
• 关键词: Chew; Bahir; Drilling; Project; Half

This proposal seeks continued funding toward partial costs for the analysis and interpretation of Pleistocene lacustrine sediments in East Africa, as part of the ICDP - approved Hominid Sites and Paleolakes Drilling Project (HSPDP). The aim of the project is to retrieve and interpret long continuous sediment cores spanning critical intervals of human evolutionary history and environmental change, close to globally-significant hominin sites. This proposal focuses on one of the five chosen sites for HSPDP: Chew Bahir, a deep sedimentary basin in southern Ethiopia, where the deep drilling has been successfully completed in Nov-Dec 2014. Two overlapping sediment cores with a >85% recovery rate could be retrieved from the western part of the Chew Bahir basin and first results suggest that this covers the last 650-950 ka of climatic history. The subsequent first laboratory campaign in April 2015, showed that the sedimentary deposits seems to have sensitively recorded both changes in precipitation and evaporation, as well as provenance, transport mechanisms and diagenetic processes. In the next two years of the project, we propose a comprehensive geochemical and mineralogical analysis of the cored material paired with the interpretation of satellite borne remote sensing data. This will allow a reliable interpretation of the high-resolution geochemical scan and logg data on the one hand and the deciphering of the proxy formation processes on the other hand. On the basis of these standardized studies of the core, we will be able to reconstruct climatic transitions on orbital to decadal time scales, which allows us to test climate-evolution hypotheses relevant to human origins. The main objectives of the Chew Bahir deep drilling project are: To illuminate the role of climate change (timing, nature, abruptness, magnitude, and synchronicity of these shifts especially the transitions between Glacial and Interglacial) in the evolution of mammalian (including hominin taxa) during the Pleistocene.

该提案寻求继续为部分成本提供资金，以分析和解释东非的更新世湖泊沉积物，这是ICDP批准的HOMINID站点和古湖钻探项目（HSPDP）的一部分。该项目的目的是检索和解释跨越人类进化史和环境变化的关键间隔的较长的连续沉积物核心，接近全球的人类位点。该提案重点介绍了HSPDP的五个选择的网站之一：Chew Bahir是埃塞俄比亚南部的深层沉积盆地，在2014年11月至12月，深层钻探已成功完成。两个重叠的沉积物核心，具有> 85％的恢复速率，可以从Chew Bahir Basin的西部地区检索到Chew Bahir Basin和First First compers comply sumpots的范围内的650年。随后在2015年4月进行的首次实验室运动表明，沉积沉积物似乎敏感地记录了降水和蒸发的变化，以及出处，运输机制和成岩过程。在该项目的接下来的两年中，我们提出了对核心材料的全面地球化学和矿物学分析，并与卫星传播遥感数据的解释配对。这将允许一方面对高分辨率地球化学扫描和登录数据的可靠解释，另一方面是对代理形成过程的解释。根据对核心的这些标准化研究，我们将能够在轨道上重建气候过渡到十年时间尺度，这使我们能够测试与人类起源相关的气候进化假设。 Chew Bahir深钻探项目的主要目标是：阐明这些转变的气候变化（时间，自然，突然，突然，突然，突然，大小和同步性）在哺乳动物（包括人类分类）在Pleistococene期间的演变中的过渡。

项目成果

Abrupt or gradual? Change point analysis of the late Pleistocene–Holocene climate record from Chew Bahir, southern Ethiopia

突然的还是渐进的？

• DOI: 10.1017/qua.2018.30
• 发表时间: 2018
• 期刊: Quaternary Research
• 影响因子: 2.3
• 作者: Trauth;Foerster;Junginger;Schaebitz
• 通讯作者: Schaebitz

Classifying past climate change in the Chew Bahir basin, southern Ethiopia, using recurrence quantification analysis

使用递归量化分析对埃塞俄比亚南部丘巴赫盆地过去的气候变化进行分类

• DOI: 10.1007/s00382-019-04641-3
• 发表时间: 2019
• 期刊: Climate Dynamics
• 影响因子: 4.6
• 作者: Trauth;Duesing;Foerster;Kraemer;Marwan;Maslin;Schaebitz
• 通讯作者: Schaebitz

Recurring types of variability and transitions in the ∼620 kyr record of climate change from the Chew Bahir basin, southern Ethiopia

埃塞俄比亚南部 Chew Bahir 盆地 ∼620 kyr 气候变化记录中反复出现的变率和转变类型

• DOI: 10.1016/j.quascirev.2020.106777
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: Trauth;Duesing;Foerster;Kaboth-Bahr;Kraemer;Marwan;Maslin;Schaebitz
• 通讯作者: Schaebitz

THE HOMININ SITES AND PALEOLAKES DRILLING PROJECT (HSPDP): PROGRESS TOWARDS UNDERSTANDING THE PALEOENVIRONMENTAL CONTEXT OF HUMAN EVOLUTION IN EASTERN AFRICA

古人类遗址和古湖钻探项目 (HSPDP)：了解东部非洲人类进化的古环境背景的进展

• DOI: 10.1130/abs/2017am-295426
• 发表时间: 2017
• 作者: Campisano;Arrowsmith;Behrensmeyer;A.K. Brown;A.L. Deocampo;Feibel;Kingston;Lowenstein;Pelletier
• 通讯作者: Pelletier

Multiband Wavelet Age Modeling for a ∼293 m (∼600 kyr) Sediment Core From Chew Bahir Basin, Southern Ethiopian Rift

• DOI: 10.3389/feart.2021.594047
• 发表时间: 2021-03-04
• 期刊: FRONTIERS IN EARTH SCIENCE
• 影响因子: 2.9
• 作者: Duesing, Walter;Berner, Nadine;Trauth, Martin H.
• 通讯作者: Trauth, Martin H.