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.

我们建议通过专注于当前手头的150个样品的表征来推进贝加尔项目。根据1990 - 91年资金的宙斯盾，没有计划前往苏联。如果我们的分析工作结果值得进行其他现场研究和收集，我们将根据这些结果制定新的建议。该项目的SMU部分将集中于获得K-AR日期和矿物化学。新日期至关重要，因为我们打算在时间空间框架中评估熔岩之间的地球化学变化。我们发现苏联的日期是完全不可靠的。我将在全岩玄武岩样品上收缩约20个日期。由于将在华盛顿大学进行整个岩石地球化学和同位素分析，因此在SMU上进行矿物化学工作是适当的。我将对表晶，异种晶体和异晶进行微探针分析。预算包括前往圣路易斯旅行的资金，以使我们能够在样本表征阶段聚会，整合我们的数据并对结果进行解释。我们正在与我们合作的Sergey Rasskazov博士应邀在1990年末在Luhr和Bowring的实验室度过一个月，以维持项目动力并促进合作。