Accretion Events in the Northern Andes

安第斯山脉北部的吸积事件

• 批准号: 9119523
• 负责人: William MacDonald
• 金额: $ 1.65万
• 依托单位: SUNY at Binghamton
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-03-01 至 1994-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9119523&HistoricalAwards=false
• 关键词: Accretion; Events; Northern; Andes

This Science in Developing Countries award will support the dissertation research of Juan Jose Estrada, A Colombian graduate student in geology at the State University of New York, Binghamton, under the supervision of Professor William MacDonald. The project aims to evaluate hypotheses of major accretionary events in the Colombian Andes Mountains. The researchers will collect paleomagnetic evidence from three major suspect terranes; make structural measurements on sense of shear on intervening suture zones; and integrate the results into computer models of tectonic trajectories and plate motions. Field emphasis will be on three main geographic regions of suspect terranes in the Colombian Andes. The investigators will identify latitudes of origin of these terranes. Outcrops in a mapped region will receive primary focus. Sense of shear and sequential changes will be sought along several fault zones. A major goal will be to verify ages of these zones' initial appearance. These new data will permit new computer-generated maps of collision events in relation to plate motions. With this award, the Colombian collaborator will acquire training in modern techniques of paleomagnetic field-oriented research, which will help train the next generation of Colombian geologists. The U.S. side will gain from the opportunity to obtain new insights into plate processes.

发展中国家科学奖将支持胡安·何塞·埃斯特拉达的论文研究，他是纽约州立大学宾厄姆顿分校的哥伦比亚地质学研究生，由威廉·麦克唐纳教授指导。该项目旨在评估哥伦比亚安第斯山脉主要吸积事件的假设。研究人员将从三个主要可疑地体收集古地磁证据；对中间缝合带的剪切感进行构造测量；并将结果整合到构造轨迹和板块运动的计算机模型中。实地重点将放在哥伦比亚安第斯山脉可疑地体的三个主要地理区域。调查人员将确定这些地体的起源纬度。测绘区域的露头将受到主要关注。沿几个断裂带将寻找剪切感和序列变化。一个主要目标将是核实这些区域最初出现的年龄。这些新数据将使计算机生成与板块运动有关的碰撞事件的新地图成为可能。有了这一奖项，哥伦比亚的合作者将获得以古地磁为导向的研究的现代技术方面的培训，这将有助于培训下一代哥伦比亚地质学家。美方将从获得对板材工艺的新见解的机会中受益。