U.S.-India Cooperative Research: Earliest Phase of Deccan Trap Activity--An Investigation Into the Igneous Rocks and Mantle Xenoliths From Kutch

美印合作研究：德干圈闭活动的早期阶段——卡奇火成岩和地幔捕虏体的调查

• 批准号: 0352948
• 负责人: Gautam Sen
• 金额: $ 1.9万
• 依托单位: Florida International University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0352948&HistoricalAwards=false
• 关键词: U.S.; India; Cooperative; Research; Earliest

0352948SenThis award will enable US PI Gautam Sen, Florida International University to collaborate with Arijit Ray and Dalim K. Paul of Presidency College in studying the earliest phase of Deccan Trap activity. One of the most spectacular episodes of volcanism ever to have occurred took place on the Indian subcontinent. The Deccan Trap activity, the eruption of about 3 million cubic kilometers of basalt lave, started in the northwestern Kutch area and progressed to southwestern India near Mumbai. The researchers will document the beginning of this activity using a combined field, petrologic, and geochemical study of the lavas, intrusives, and the deep-seated mantle rock fragments (xenoliths) from Kutch. The petrologic and geochemical portion of the study will involve electron microprobe analysis of the minerals and some Sr-isotope analysis of the plagioclase phenocrysts using a mass spectrometer. The Division of Earth Sciences, Petrology and Geochemistry Program is jointly funding this research.

该奖项将使美国佛罗里达国际大学的Pi Gautam Sen能够与总统学院的Arijit Ray和Dalim K.Paul合作，研究德干陷阱活动的最早阶段。有史以来最壮观的火山喷发之一发生在印度次大陆。德干陷阱活动是大约300万立方公里玄武岩熔岩的喷发，开始于库奇地区的西北部，并向靠近孟买的印度西南部蔓延。研究人员将对库奇的熔岩、侵入岩和深部地幔岩石碎片(捕虏体)进行现场、岩石学和地球化学综合研究，以证明这一活动的开始。这项研究的岩石学和地球化学部分将包括对矿物的电子显微探针分析，以及使用质谱仪对斜长石斑晶进行一些锶同位素分析。地球科学、岩石学和地球化学系共同资助这项研究。