Petrology of Kahoolawe Island, Hawaii: Tholeiitic, Alkalic, and REE, Y-Enriched Basalts and Xenoliths as Insight to Hawaiian Magmatism and Petrogenesis

夏威夷卡胡拉维岛的岩石学：拉斑岩、碱性岩、稀土元素、富 Y 玄武岩和捕虏体作为夏威夷岩浆作用和岩石成因的见解

• 批准号: 8903704
• 负责人: Ronald Fodor
• 金额: $ 4.85万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-01 至 1992-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8903704&HistoricalAwards=false
• 关键词: Petrology; Kahoolawe; Island; Hawaii; Tholeiitic

This project represents a comprehensive petrologic study of more than two hundred samples of basaltic rock collected from Kahoolawe Island, Hawaii. Examination of geochemically anomalous samples along with those representing the full stratigraphy and structure of Kahoolawe will provide a new perspective on Hawaiian petrology and rare-earth element transport , in than no such features have yet been examined within the context of Hawaiian volcanic stratigraphy. These basalts will be analyzed for major- and trace-elements including REE. Phase compositions will be determined and K-Ar ages obtained. The plan is to characterize the island, interpret and establish the origins of its varied petrologic features, and use the anomalous characteristics to model new aspects of Hawaiian magmatism and igneous processes. These data will then be used to modify and more fully develop existing petrogenetic models for basaltic magmatism.

该项目对从夏威夷卡胡拉维岛采集的两百多个玄武岩样本进行了全面的岩石学研究。 对地球化学异常样本以及代表 Kahoolawe 完整地层和结构的样本的检查将为夏威夷岩石学和稀土元素运移提供新的视角，因为在夏威夷火山地层学的背景下尚未检查过此类特征。 将分析这些玄武岩的主量元素和微量元素，包括稀土元素。将确定相组成并获得 K-Ar 年龄。 该计划旨在描述该岛的特征，解释和确定其各种岩石学特征的起源，并利用异常特征来模拟夏威夷岩浆作用和火成岩过程的新方面。然后，这些数据将用于修改和更全面地开发现有的玄武岩岩浆作用岩石成因模型。