Paleozoic Tectonics and Sediment Sources of the Ouachita Orogen through Isotopic and Geochemical Studies

通过同位素和地球化学研究沃希托造山带的古生代构造和沉积物来源

• 批准号: 9105479
• 负责人: William Dickinson
• 金额: $ 10万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-06-01 至 1993-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9105479&HistoricalAwards=false
• 关键词: Paleozoic; Tectonics; Sediment; Sources; Ouachita

Detritus shed from a collisional orogen potentially originates from both continental blocks involved and materials formed during the collision. This project will apply that concept to the Ouachita-Marathon system that formed during Paleozoic time and will attempt to characterize the sources for the thick sedimentary units present. The sediments will be assigned to North American sources or an inferred tectonic land (Llanoria) lying south of the north American continent, based on chemical (REE, Cr, Ni, Hf, Ta, Zr) and isotopic (Nd-Sr) data. Results should help understand sediment sources and dispersal patterns as well as help define and characterized the southern inferred continental block of this origin.

碰撞造山带的碎屑可能来源于所涉及的大陆地块和碰撞过程中形成的物质。该项目将把这一概念应用于古生代形成的瓦奇塔-马拉松系统，并试图描述目前厚重沉积单元的来源。根据化学元素(REE、Cr、Ni、Hf、Ta、Zr)和同位素(Ndsr)数据，这些沉积物将被归类为北美来源或北美大陆南部的构造大陆(Llanoria)。结果应有助于了解沉积物来源和扩散模式，并有助于确定和表征这一起源的南部推断大陆块。