Small Grants for Exploratory Research (SGER): In-situ PB Analysis of MORB Melt Inclusions

探索性研究小额资助 (SGER)：MORB 熔体夹杂物的原位 PB 分析

• 批准号: 9811534
• 负责人: Nobumichi Shimizu
• 金额: $ 6.75万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-06-01 至 2000-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9811534&HistoricalAwards=false
• 关键词: Small; Grants; Exploratory; Research; SGER

9811534 Shimizu This is an exploratory work for determining Pb isotopic compositions in situ in primitive MORB melt inclusions using a Cameca IMS 1270 ion microprobe. In order to address the question of the origin of the garnet signature in MORB, emphasis will be placed on whether there is a systematic shift of Pb isotopic compositions on melts with geochemical garnet signatures toward the HIMU mantle component. Melt inclusion suites in which garnet signatures have been recognized by trace element patterns and by 230Th excess will be examined.

小行星9811534 本文是利用Cameca IMS 1270离子探针原位测定原始MORB熔体包裹体中Pb同位素组成的探索性工作。 为了解决问题的起源的石榴石签名在MORB，重点将放在是否有一个系统的移动铅同位素组成的熔体地球化学石榴石签名对HIMU地幔成分。 熔体包裹体套件中石榴石签名已被确认的微量元素模式和230 Th过剩将进行检查。