Assessing patterns of deformation across the Precordillera thrust belt of northwestern Argentina: A multiple thermochronometer study of foreland exhumation

评估阿根廷西北部 Precordillera 冲断带的变形模式：前陆折返的多重测温计研究

基本信息

批准号：
1049605
负责人：
Julie Fosdick
金额：
$ 8.5万
依托单位：
Fosdick Julie C
依托单位国家：
美国
项目类别：
Fellowship Award
财政年份：
2011
资助国家：
美国
起止时间：
2011-09-01 至 2014-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1049605&HistoricalAwards=false
关键词：
Assessing patterns deformation across Precordillera

项目摘要

Dr. Julie Fosdick has been awarded an NSF Earth Sciences Postdoctoral Fellowship to carry out a research and education plan at the University of Arizona, Tucson. This project aims to quantify temporal changes in crustal thickening and thrust belt exhumation along the central Andes of northwestern Argentina by employing bedrock and detrital geo-thermochronology of the Bermejo Basin and Precordillera fold-thrust belt. Results from this study will also characterize the source-sink thermal history of Tertiary foreland and intermontane basin strata. Findings will be evaluated in the larger regional context to elucidate the spatial pattern, timing, and rates of foreland exhumation and deformation in the central Precordillera of northwestern Argentina to investigate along-strike changes in structural style and basin evolution within the Central Andean orogen.Convergent plate tectonic systems are represented by impressive mountain belts throughout the world, forming significant topographic features that provide sediment to the world's basins. However, existing models for continental deformation along subduction zones do not sufficiently explain the diversity and magnitude of tectonic structures, motivating the need to better understand the geologic processes that modulate the development of orogenic belts. These are also important processes to understand because they are linked to seismic and volcanic hazards and the distribution of natural resources. The project includes a detailed education and outreach program at the University of Arizona and the University of Buenos Aires, Argentina. Two upper-division and graduate level seminars will be taught by the fellow: Exhumation and Controlling Mechanisms in Cordilleran Orogenic Systems (Year 1, UA), and Thermochronology Applied to Tectonic Problems (Year 2, UBA). Lastly, the postdoctoral fellow will mentor student research projects to broaden her teaching and mentorship experience in preparation for an academic career in the geosciences.

朱莉·福斯迪克（Julie Fosdick）博士被授予NSF地球科学博士后研究金，以在亚利桑那大学图森分校执行研究和教育计划。该项目旨在通过采用贝尔梅霍盆地和precordillera折叠式腰带的基岩和碎屑地球体学，沿阿根廷西北部安第斯山脉的中央安第斯山脉的中部安第斯山脉中心挖掘地壳增厚和推力带挖掘的时间变化。这项研究的结果还将表征第三纪和跨蒙托坦盆地阶层的源 - 链热史。调查结果将在更大的区域环境中进行评估，以阐明阿根廷西北部中部precordilla的空间模式，时间和洞穴挖掘和变形率，以调查中央造型造型的中央造型的结构风格的变化和盆地进化。在整个园林中，整个园林都在整个世界中均表现出了整个园林的园艺。但是，现有的沿俯冲区域大陆变形的模型不能充分解释构造结构的多样性和幅度，从而激发了更好地了解调节造山带发展的地质过程的需求。这些也是理解的重要过程，因为它们与地震和火山危害以及自然资源的分配有关。该项目包括亚利桑那大学和阿根廷布宜诺斯艾利斯大学的详细教育和外展计划。该研究员将教授两个上级和研究生水平的研讨会：培育和控制机制（第1年，UA）中的挖掘和控制机制，以及应用于构造问题的热量学（2年级，UBA）。最后，博士后研究员将指导学生研究项目，以扩大她为地球科学学术生涯做准备的教学和指导经验。