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Collaborative Research: Magmatism of the Baikal Rift, USSR:Asthenospheric Upwelling Along a Lithospheric Boundary

合作研究：苏联贝加尔湖裂谷的岩浆作用：沿着岩石圈边界的软流圈上升流

基本信息

批准号：
9004812
负责人：
Michael Dungan
金额：
$ 3万
依托单位：
Southern Methodist University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1990
资助国家：
美国
起止时间：
1990-08-15 至 1992-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004812&HistoricalAwards=false
关键词：
Collaborative Research Magmatism Baikal Rift

项目摘要

We propose to advance the Baikal project by concentrating on characterization of the 150 samples currently in hand. No travel to the USSR is planned under the aegis of 1990-91 funding. If results of our analytical work warrant additional field studies and collecting, we will formulate a new proposal based on these results. The SMU portion of the project will focus on obtaining K-Ar dates, and on mineral chemistry. The new dates are essential, because we intend to evaluate the geochemical variations among lavas in a temporal-spatial framework. We have found the Soviet dates to be completely unreliable. I will contract for approximately 20 dates on whole-rock basalt samples. As the whole-rock geochemistry and isotopic analyses will be done at Washington University, it is appropriate that the mineral chemistry work be done at SMU. I will perform microprobe analyses of phenocrysts, xenocrysts, and xenoliths. The budget includes funds for travel to St. Louis in order to allow us to get together after the sample characterization phase, integrate our data, and arrive at interpretations of the results. Dr. Sergey Rasskazov, with whom we are collaborating, has been invited to spend a month in the laboratories of Luhr and Bowring during late 1990 in order to maintain project momentum and facilitate cooperation.

我们建议通过集中力量推进贝加尔湖项目，目前正在进行的150个样品的鉴定。没有旅行计划在1990- 1991年拨款的赞助下向苏联提供援助。如果我们的分析工作结果保证了进一步的实地研究我们将在此基础上制定一项新的建议，结果该项目的SMU部分将集中于获得K-Ar 日期和矿物化学。新的日期是必不可少的，因为我们打算评估地球化学的变化，时空框架中的熔岩我们找到了苏联人日期完全不可靠。我将承包全岩玄武岩样品的大约20个日期。为全岩地球化学和同位素分析将在华盛顿大学，它是适当的，矿物在SMU完成化学工作。我会用微探针斑晶、捕虏晶和捕虏体的分析。预算包括前往圣路易斯的资金，让我们在样品表征阶段之后聚在一起，整合我们的数据，并得出对结果的解释。谢尔盖·拉斯卡佐夫博士，我们正在与之合作，邀请他们在鲁尔和鲍林的实验室里呆了一个月 1990年底，为了保持项目的势头，促进合作。