U.S.-France Cooperative Research: Formation of a Modern Super Bounding Surface with Erg Migration: Archar Erg, Mauritania

美法合作研究：通过 Erg 迁移形成现代超级边界表面：Archar Erg，毛里塔尼亚

• 批准号: 8715034
• 负责人: Gary Kocurek
• 金额: $ 1.02万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-03-01 至 1989-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8715034&HistoricalAwards=false
• 关键词: U.S.; France; Cooperative; Research; Formation

This award will support collaborative geological field research in Mauritania between Dr. Gary Kocurek, University of Texas in Austin and Dr. Max Deynoux of the Laboratoire de Petrologie, University of Poitiers, France. The investigators plan to study a Saharan sand sea (the Archar Erg in northwestern Mauritania) that, from all evidence, is actively migrating with the formation of a super bounding surface in its wake. It has been recently recognized that regional unconformities (termed super bounding surfaces) occur within ancient eolian (wind) sequences of the western U.S. These surfaces potentially allow local and regional correlation and the recognition of distinct genetic sand-sea migration. Super surfaces formed by sand-sea migration are the least understood, largely because the modern small dune fields in the temperate climate of North America are not viable analogues for large-scale, trade-wind-belt sand seas that are migrating. In this joint project Dr. Kocurek will benefit from French expertise, logistical support and access to an unusual geological site. The study will address processes of surface development with sand-sea migration, including controls on sand deflation, preservation potential of sand-sea deposits, and formation of features characteristic of this type of terrestrial unconformity.

该奖项将支持合作地质领域的研究， 毛里塔尼亚之间的加里Kocurek博士，得克萨斯大学奥斯汀分校 和墨西哥大学石油学院的马克斯·德努博士 法国普瓦捷。 调查人员计划研究撒哈拉沙漠 海（毛里塔尼亚西北部的阿尔查尔尔格），从所有 证据，正在积极迁移，形成一个超级 在它的尾流中环绕着水面 最近人们认识到， 区域不整合面（称为超边界面） 在美国西部的古代风成（风）序列中。这些 表面可能允许局部和区域相关性， 识别出独特的成因沙海迁移。 超曲面 是由沙海迁移形成的， 因为现代的小沙丘在温带气候下， 北美不是大规模的可行的类似物， 信风带的沙海正在迁移 在这个联合项目中，Kocurek博士将受益于法语 专业知识，后勤支持和获得不寻常的地质 绝佳的价钱 这项研究将解决表面发展的过程， 沙海迁移，包括对沙沉降的控制， 沙海沉积的保存潜力， 具有这种陆地不整合的特征。