Integrated stratigraphic, geomorphic, sedimentologic, numeric, and experimental study of hangingwall ramp architecture in continental half grabens

大陆半地堑上盘斜坡结构的综合地层学、地貌、沉积学、数值和实验研究

• 批准号: 0344146
• 负责人: Gary Smith
• 金额: --
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-03-15 至 2009-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0344146&HistoricalAwards=false
• 关键词: Integrated; stratigraphic; geomorphic; sedimentologic; numeric

Integrated stratigraphic, geomorphic, sedimentologic, numeric, and experimental study of hangingwall ramp architecture in continental half grabens.ByGary A. Smith and John W. GeissmanEAR-0344146This project integrates geomorphic and sedimentologic field studies with experimental and computational approaches to elucidate tectonic and climatic controls on the development of stratigraphic sequences within differentially subsiding and tilting, nonmarine extensional basins. The research is motivated by the hypothesis that differential subsidence across the hangingwall ramp, or sediment flux from large drainage basins on the hangingwall ramp, or both, controls the accumulation, stratigraphic architecture, sediment preservation, and caliber of sediment throughout much of the basin, as well as the development of unconformities and sedimentary bypass surfaces. Numerical simulations predicting specific facies patterns will be tested using experimental methods and field data collected in a well-mapped, well-dated extensional basin in the Rio Grande rift of New Mexico. New magnetostratigraphic data will enhance the chronological database required for the project. PIs research approach differs from traditional stratigraphic methods primarily through integration of geomorphic and stratigraphic methods for modeling aggrading continental successions to predict patterns of sediment dispersal in half graben settings. The resulting insights into the origin of basin-fill architecture will have immediate implications for conceptualizing aquifer structure in the arid western United States.

综合地层，地层，沉积学，数字和实验研究大陆半抓地力的悬挂式坡道体系结构。BygaryA. Smith和John W. Geissmanear-0344146，该项目将地貌和沉积物研究与实验和计算方法进行了整合，以实验和计算的方式进行了模特和沉积物的序列，以实验和序列的序列进行了序列，并逐步进行了序列的发展，并开发了综合的分层和序列，并在整合地介绍了整理的发展，构成了综合的开发方法倾斜，非海洋延伸盆地。 这项研究是由以下假设的动机：悬挂墙坡道上的差异沉降或悬挂墙坡道上大型排水盆地的沉积物通量，或两者都控制着整个盆地的积累，地层建筑，沉积物保存和沉积物的过滤量，以及在整个盆地的大部分沉积物，以及无概念和沉积物的发展。 预测特定相模式的数值模拟将使用实验方法和现场数据进行测试，该方法在新墨西哥州的里奥格兰德裂谷中收集的实验方法和现场数据。 新的磁层学数据将增强该项目所需的时间顺序数据库。 PIS研究方法与传统的地层方法不同，主要是通过整合地形和地层方法的整合来建模大陆演讲，以预测一半抓地环境中沉积物分散的模式。 对盆地填充建筑的起源的最终见解将对美国干旱西部的含水层结构的概念化产生直接影响。