Collaborative Research: China-United States Scientific Cooperative Project: Academia Sinica (China) Stanford - Geophysical Lab; Petrogeochemical Study...

合作研究：中美科学合作项目：中央研究院（中国）斯坦福大学地球物理实验室；

• 批准号: 9526700
• 负责人: Douglas Rumble
• 金额: $ 3.79万
• 依托单位: Carnegie Institution of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-07-15 至 1999-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9526700&HistoricalAwards=false
• 关键词: Collaborative; Research; China; United; States

9526700 Rumble This research involves a study of rocks from the Dabie-Sulu ultrahigh-pressure (UHP) terrane of eastcentral China. Topics to be studied include: (1) the areal extent of the extreme geochemical anomalies in negative delta 18-oxygen values and high epsilon Nd bulk-roak values, (2) the breadth of UHP metamorphism in the Dabie-Sulu collision zone, (3) the source and composition of volatiles during UHP metamorphism, and (4) the petrochemical differences between the UHP garnet-bearing ultramafics derived from cumulate intrusive and those from mantle wedges. These UHP metamorphic rocks are under intense investigation because they have been subjected to P-T conditions involving low temperatures and high pressures up to 45 kbars, in a tectonic setting responsible for arc-magma genesis and for intermediate-depth earthquakes.

9526700隆隆声这项研究涉及对中国中东部大别-苏鲁超高压（UHP）火山岩的研究。 将研究的主题包括：大别-苏鲁碰撞带超高压变质作用的范围，超高压变质作用中挥发分的来源和组成，堆晶侵入岩中超高压石榴子石超镁铁岩与地幔楔中超高压石榴子石超镁铁岩的岩石化学差异。 这些超高压变质岩正在进行深入的研究，因为它们已经受到P-T条件，涉及低温和高达45千巴的高压，在负责弧岩浆成因和中深地震的构造环境。