Collaborative Research: Quantifying temporal relationships between tectonic forcing and landscape responses in the central Andean Precordillera, Argentina

合作研究：量化阿根廷安第斯山脉中部的构造强迫和景观响应之间的时间关系

• 批准号: 1842496
• 负责人: Darryl Granger
• 金额: $ 22.41万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-07-01 至 2024-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1842496&HistoricalAwards=false
• 关键词: Collaborative; Research; Quantifying; temporal; relationships

This project will focus on understanding landscape changes, such as mountain building and erosion, caused by the collision of tectonic plates. By using a new method of combining two different types of analyses (thermochronology and cosmogenic radio nuclide dating) the research team will be able to determine patterns in how faults grow and how fast a landscape can change in a collisional system. The two different dating techniques are complementary as they record information about geologic changes on different but overlapping timescales, and thus combining them will fill an important gap between shorter- and longer-term geologic changes. This project will facilitate the professional development of a postdoctoral fellow by providing professional training in both research and teaching, and by establishing connections with international colleagues. The postdoctoral fellow will receive instruction on new methods of teaching and education and apply these approaches through participation in established programs for K-12 outreach and by leading Earth Science seminars and field trips.The project will develop and use a novel combination of low-temperature thermochronometry and cosmogenic radionuclide techniques to quantify changes in recent and paleo erosion rates related to faulting and sedimentation driven by compressional tectonics. This study will develop and refine the combination of two geochronological methods that span different spatiotemporal scales to understand links between rock uplift, faulting, basin subsidence, and lag times between erosion and sediment deposition. The central Andean Precordillera is ideal for this study as there has been active faulting and deformation from the early Miocene to present in a region with relatively stable and arid climate conditions during that time. This suggests that landscape development has been driven primarily by tectonics rather than climate. Acquiring new data to address rates of deformation and landscape response times across several geologic structures will not only advance knowledge about the development of the central Andean Precordillera fold-thrust belt, but also contribute more generally to the growing body of research on landscape responses to tectonic perturbations.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该项目将着重于了解构成板碰撞引起的景观变化，例如山区建筑和侵蚀。通过使用一种结合两种不同类型的分析的新方法（热量照相和宇宙无线电核素约会），研究团队将能够确定断层的增长方式以及碰撞系统中景观的变化速度的模式。这两种不同的约会技术是互补的，因为它们记录了有关不同但重叠时间标准的地质变化的信息，因此将它们结合在一起将填补较短和长期地质变化之间的重要空白。该项目将通过在研究和教学方面提供专业培训，并与国际同事建立联系，从而促进博士后研究员的专业发展。博士后研究员将获得有关新的教学和教育方法的教学，并通过参与K-12外展和领先的地球科学研讨会和实地考察的既定计划来运用这些方法。该项目将开发和使用低温热等级工艺方法的新型组合，并通过对最近和古代构型的变化来量化与不适合的变化，并通过对不适合进行无事的变化。这项研究将开发和完善两种跨越时空尺度的年代学方法的组合，以了解岩石隆起，断层，盆地沉降以及侵蚀与沉积物沉积之间的滞后时间之间的联系。中央安第斯山脉中心precordilla是这项研究的理想选择，因为在此期间，中新世早期到具有相对稳定且干旱的气候条件的区域中存在主动的断层和变形。这表明景观发展主要是由构造而不是气候驱动的。获取新的数据以解决几个地质结构的变形和景观响应时间的问题，不仅会提高有关中央安第斯山脉中心precordilera折叠式腰带的发展的知识，而且更普遍地有助于构成构造对构造的响应的不断增长的研究，这些奖项反映了NSF的法规及其在范围内的范围，这反映了NSF的法定范围，并且在范围内构成了宽广的范围。 标准。