Tectonics and climate in a low-latitude rift: rift-shoulder denudation and sedimentation processes in northern Lake Malawi
低纬裂谷的构造和气候:马拉维湖北部裂谷肩剥蚀和沉积过程
基本信息
- 批准号:5423602
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Infrastructure Priority Programmes
- 财政年份:2004
- 资助国家:德国
- 起止时间:2003-12-31 至 2006-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Lake Malawi is an integral part of the East African Rift and contains an important low-latitude paleoclimate record reflecting the influence of climatic changes on erosion and rift sedimentation. An available network of high resolution seismic reflection profiles (3000 km length) provides an outstanding opportunity to characterize and quantify mass flux and sediment volumes in the northern Malawi Rift. Previous work has identified 100 kyr sedimentary cycles in the imaged seismic packages. A basin-wide analysis of this dataset with correlated seismic packages, and comparison with long-term denudation rates derived from thermochronology (U-Th/He; apatite fission track) will help assess the influence of multiple climate changes on erosion and sedimentation processes. In conjunction with geochronologic work on existing drill cores, and information to be obtained from future ICDP drilling in northern Lake Malawi the proposed analysis of seismic stratigraphic packages and low temperature thermochronology of rift-shoulder rocks will result in an improved model of sedimentation in an active rift. In addition, the expected results will determine the importance of climate vs. tectonic processes in rift sedimentation.
马拉维湖是东非裂谷的组成部分,包含反映气候变化对侵蚀和裂谷沉积影响的重要低纬古气候记录。现有的高分辨率地震反射剖面网络(3000公里长)为描述和量化马拉维裂谷北部的质量通量和沉积量提供了一个绝佳的机会。以前的工作已经在成像的地震包中识别出100个KYR沉积旋回。用相关的地震资料包对这一数据集进行全盆地分析,并与热年代学(U-Th/He;磷灰石裂变径迹)得出的长期剥蚀率进行比较,将有助于评估多重气候变化对侵蚀和沉积过程的影响。结合对现有钻探岩芯的地质年代学工作,以及今后在马拉维湖北部ICDP钻探中将获得的信息,拟议的对裂谷-肩部岩石的地震地层学资料包和低温热年代学的分析将改进活动裂谷中的沉积模式。此外,预期的结果将决定气候和构造过程在裂谷沉积中的重要性。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Professor Dr. Manfred Strecker, Ph.D.其他文献
Professor Dr. Manfred Strecker, Ph.D.的其他文献
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{{ truncateString('Professor Dr. Manfred Strecker, Ph.D.', 18)}}的其他基金
Deformation patterns associated with the seismic cycle of the 27 February Maule earthquake segment at various spatiotemporal scales
与 2 月 27 日马乌莱地震段不同时空尺度的地震周期相关的变形模式
- 批准号:
197097170 - 财政年份:2011
- 资助金额:
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Research Grants
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159234416 - 财政年份:2010
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Research Units
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48637226 - 财政年份:2007
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Research Grants
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16338038 - 财政年份:2006
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5455050 - 财政年份:2005
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Research Grants
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- 批准号:
5277442 - 财政年份:2000
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Bestimmung der quartären Deformationsraten und des Deformationsregimes im orogenen Vorland des Qilian-Shan, NW-China
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5197136 - 财政年份:1999
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