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

我们建议通过集中对目前手头的150个样品进行表征来推进贝加尔项目。在1990-91年的资金支持下，没有计划前往苏联。如果我们的分析工作结果需要进行更多的实地研究和收集，我们将根据这些结果制定新的建议。该项目的SMU部分将侧重于获取K-Ar日期和矿物化学。新的日期是必不可少的，因为我们打算在时空框架内评估熔岩之间的地球化学变化。我们发现苏联的日期完全不可靠。我将与全岩玄武岩样品签订大约20个日期的合同。由于全岩地球化学和同位素分析将在华盛顿大学进行，矿物化学工作在SMU进行是合适的。我将对斑晶、包裹体和包裹体进行微探针分析。预算包括前往圣路易斯的旅费，以便使我们能够在样本描述阶段之后聚在一起，整合我们的数据，并对结果进行解释。谢尔盖·拉斯卡佐夫博士是我们的合作伙伴，他应邀在1990年底期间在卢尔和鲍林的实验室呆了一个月，以保持项目势头并促进合作。

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.