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Collaborative Research: Reconstructing ancient passive margin dynamics by relating geomorphic and stratigraphic surfaces: a combined laboratory and field study

合作研究：通过关联地貌和地层表面重建古代被动边缘动力学：实验室和实地研究相结合

基本信息

批准号：
1049387
负责人：
Kyle Straub
金额：
$ 19.27万
依托单位：
Tulane University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2011
资助国家：
美国
起止时间：
2011-04-01 至 2016-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1049387&HistoricalAwards=false
关键词：
Collaborative Research Reconstructing ancient passive

项目摘要

Funds are provided to carry out a lab and field investigation of statistics describing the stratigraphic architecture of passive continental margins and their relationship to geomorphic surfaces. The overall objective of the project is to improve our ability to invert the stratigraphic record for paleo surfaces dynamics and topography. The continental margin record contains features such as bars, channels and channel networks, yet we cannot precisely reconstruct the relationship between these preserved deposits and geomorphic processes that produce them. Thus, the research plan is to use flume models to measure and identify scaling relationships in channelized, distributive systems with a focus on deltaic and deep water systems. The goal is determine how stratigraphic discontinuities are formed and to see if the mechanism of formation can be deduced from statistical descriptions of surface morphology. The ultimate objective is be able to infer the dynamic origin of fossilized erosional surfaces, using relationships derived from the experimental flume models.The stated broader impacts include student training. The work also has practical value in understanding how coastal systems grow, as well as in resource extraction from the deltaic and deep-water systems. The results could have important implications in how we interpret stratigraphic surfaces in the field.

提供资金进行实验室和实地调查，统计描述被动大陆边缘的地层结构及其与地貌表面的关系。该项目的总体目标是提高我们对古地表动力学和地形的地层记录进行反演的能力。大陆边缘记录包含沙洲、河道和河道网络等特征，但我们无法精确地重建这些保存下来的沉积物与产生它们的地貌过程之间的关系。因此，研究计划是使用水槽模型来测量和识别水道化分布系统中的结垢关系，重点是三角洲和深水系统。目的是确定地层不连续是如何形成的，并看看是否可以从地表形态的统计描述中推断出形成的机制。最终的目标是能够推断出化石侵蚀表面的动力起源，利用从实验水槽模型中得出的关系。所述的更广泛的影响包括学生培训。这项工作在理解沿海系统如何生长，以及从三角洲和深水系统中提取资源方面也具有实用价值。这些结果可能对我们如何在野外解释地层表面具有重要意义。