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

• 批准号: 0408513
• 负责人: Mousumi Roy
• 金额: $ 4.7万
• 依托单位: University of New Mexico
• 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=0408513&HistoricalAwards=false
• 关键词: Collaborative; Research; Exhumation; Colorado; Plateau

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南部落基山脉的三级挖掘历史。这项工作的目标是了解科罗拉多高原地区岩石的热历史，以及这些岩石如何处于接近地面的水平。再加上科罗拉多高原景观如何侵蚀的简单计算，岩石的热历史也被用来限制科罗拉多高原的表面上升历史。该项目依赖于科罗拉多高原地区的热和地质历史记录的岩石发掘。 热史是从两种记录低温（小于110°C）冷却岩石，裂变轨道退火以及铀，thor和氦气（如磷灰石）内部的相对丰度的技术重建的。该项目涉及创建岩石挖掘和侵蚀数据的地理信息系统数据库（要与科学界共享）。这些数据用于初步建模工作，以研究我们数据对科罗拉多高原和南部落基山脉的隆升历史的含义。这项研究正在提供科罗拉多高原国家公园的教育展览中使用的新产品。