Layering of the Oceanic Lithosphere: Petrologic Study of Hawaiian Xenoliths and Abyssal Peridotites

大洋岩石圈的分层：夏威夷捕虏体和深渊橄榄岩的岩石学研究

• 批准号: 9520409
• 负责人: Gautam Sen
• 金额: --
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-15 至 1998-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9520409&HistoricalAwards=false
• 关键词: Layering; Oceanic; Lithosphere; Petrologic; Study

9520409 Sen This project will involve petrographic, electron probe, and ion probe work an a suite of spinal Iherzolite and plagioclase Iherzolite xenoliths from the Pali vent on Oahu, Hawaii. These rocks represent a wider depth range of the lithosphere that lost its mid-ocean ridge basalt melts some 90 million years ago. Thus a 90 million year old residual melting column will be reconstructed. The goals of this research are to (a) decipher vertical elemental variations in the oceanic lighosphere beneath Oahu, (b) compare this information with those obtained from abyssal peridotites, (c) test existing melting models of lithosphere information and (d) obtain new insights on mid-ocean ridge basalt melting. ***

9520409 Sen该项目将涉及对来自夏威夷奥陶洛斯的帕利火山口的一套脊状二辉橄榄岩和斜长石二辉橄榄岩捕虏体的岩相学、电子探针和离子探针工作。这些岩石代表了大约9000万年前失去洋中脊玄武岩熔体的岩石圈更广泛的深度范围。因此，一个9000万年前的残留熔融柱将被重建。这项研究的目的是：（a）破译大洋中脊下面的海洋光圈中的垂直元素变化;（B）将这一信息与从深海橄榄岩中获得的信息进行比较;（c）测试现有的岩石圈信息熔融模型;（d）获得关于大洋中脊玄武岩熔融的新见解。***