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Collaborative Research: Exhumation of the Colorado Plateau - Spatial and Temporal Distribution and Implications for Landscape Evolution

合作研究：科罗拉多高原的挖掘——时空分布及其对景观演化的影响

基本信息

批准号：
0409845
负责人：
Joel Pederson
金额：
$ 4.96万
依托单位：
Utah State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2004
资助国家：
美国
起止时间：
2004-07-15 至 2007-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0409845&HistoricalAwards=false
关键词：
Collaborative Research Exhumation Colorado Plateau

项目摘要

The investigators in multidisciplinary collaborative project are examining the Tertiary exhumation history of the Colorado Plateau and adjacent southern Rocky Mountains. The goals of this work are to understand the thermal history of rocks of the Colorado Plateau region, and how these rocks came to be at near-surface levels. Together with simple calculations of how the Colorado Plateau landscape has been eroded, the thermal history of the rocks is being used to constrain the surface uplift history of the Colorado Plateau. This project relies on rock exhumation recorded in the thermal and geologic history of the Colorado Plateau region. The thermal history is reconstructed from two techniques that record the low-temperature (less than 110 deg C) cooling of rocks, fission-track annealing and the relative abundance of uranium, thorium, and helium inside minerals such as apatite. The project involves creating a Geographic Information Systems database (to be shared with the scientific community) of the rock exhumation and erosion data. These data are used in a preliminary modeling effort to study the implications of our data for the uplift history of the Colorado Plateau and southern Rocky Mountains. This research is providing new products that may be used in educational displays at National Parks across the Colorado Plateau.

多学科合作项目的研究人员正在研究科罗拉多高原和邻近的落基山脉南部的第三纪挖掘历史。这项工作的目标是了解科罗拉多高原地区岩石的热历史，以及这些岩石是如何形成在近地表水平的。结合对科罗拉多高原地貌如何被侵蚀的简单计算，这些岩石的热史被用来约束科罗拉多高原的地表抬升历史。该项目依赖于科罗拉多高原地区热史和地质史中记录的岩石挖掘。热历史是通过两种技术重建的，这两种技术记录了岩石的低温(低于110摄氏度)冷却、裂变径迹退火以及磷灰石等矿物中铀、钍和氦的相对丰度。该项目涉及创建一个地理信息系统数据库(将与科学界共享)，其中包括岩石挖掘和侵蚀数据。这些数据被用于初步建模工作，以研究我们的数据对科罗拉多高原和落基山脉南部隆起历史的影响。这项研究正在提供新的产品，可以用于科罗拉多高原国家公园的教育展示。