Study of Included Fluids, Fluid-Rock Interactions, and Fluid Evolution in the Continental Deep-Drilling Project (KTB), Bavarian Oberpfalz

这是一个为期三年的项目，旨在研究与巴伐利亚奥伯普法兹地区大陆深钻井计划(KTB)的岩石相关的流体、流体-岩石相互作用和流体-运移过程。钻井项目的三个具体方面是：1)含挥发分流体包裹体的表征(通过定量激光拉曼显微光谱和常规显微测温)；2)石墨的结构表征和岩石学解释(通过激光拉曼显微光谱和岩相学分析)；3)研究了C-0-H-N流体的化学演化，在某些情况下最终以石墨析出为终点。首席研究员的研究小组特别适合这个项目，因为有许多以前和正在进行的研究，包括开发以下方法：C-O-H-N体系中流体包裹体的定量拉曼分析；根据多组分C-O-H-N气液混合物中的拉曼峰参数量化内部挥发压力；以及从拉曼光谱参数表征石墨结构及其相关的变质等级。此外，对流体演化的评估将有助于对C-O-H系统合成流体中稳定和亚稳定平衡的持续研究，以及对德卢斯镁铁质侵入杂岩部分地区流体-岩石相互作用的研究，其中流体和岩性与KTB的流体和岩性具有很强的相似性。

This is a three-year project to study included fluids, fluid- rock interactions, and fluid-transport processes associated with rocks of the Continental Deep-Drilling Program (KTB) in the Bavarian Oberpfalz region. The three specific aspects of the drilling project to be addressed are: 1) Characterization of volatile-bearing fluid inclusions (by quantitative laser Raman microspectroscopy and conventional microthermometry); 2) structural characterization and petrologic interpretation of graphite (by laser Raman microspectroscopy and petrographic analysis); and 3) investigation of the chemical evolution of the C-0-H-N fluids, which in come cases culminated in graphite precipitation. The principal investigator's research group is particularly suited to this project because of many previous and ongoing studies, including developing methodologies for: the quantitative Raman analysis of fluid inclusions in the C-O-H-N system; quantifying internal volatile pressures from Raman peak parameters in multi- component C-O-H-N gas/fluid mixtures; and characterizing graphite structures and their associated metamorphic grades from Raman spectral parameters. In addition, evaluations of fluid evolution will be aided by ongoing studies of stable and metastable equilibria in synthetic fluids in the C-O-H system, and by studies of fluid-rock interactions in parts of the Duluth mafic intrusive complex wherein both fluids and lithologies bear strong compositional similarities to those of the KTB.