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，研究包括流体、流体-岩石相互作用以及与巴伐利亚奥伯法尔茨地区大陆深层钻探计划（KTB）岩石相关的流体运输过程。钻井项目需要解决的三个具体方面是：1)含挥发物包裹体的表征（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（激光拉曼显微光谱和岩石学分析）；3)研究C-0-H-N流体的化学演化，在某些情况下最终导致石墨沉淀。首席研究员的研究小组特别适合这个项目，因为许多以前和正在进行的研究，包括开发方法：C-O-H-N系统中流体包裹体的定量拉曼分析；利用拉曼峰参数量化多组分C-O-H-N气/液混合物的内部挥发压力；并通过拉曼光谱参数表征石墨结构及其相关的变质等级。此外，对C-O-H体系中合成流体的稳定和亚稳平衡的持续研究，以及对德卢斯基性侵入杂岩部分流体和岩石相互作用的研究，将有助于对流体演化的评价，这些杂岩的流体和岩性都与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.