An Actualistic Model of Cementation Patterns in a Modern Regional Carbonate Aquifer

这是一个系统而完整的岩相学， 碳酸盐胶结作用水文、水化学研究 上弗洛里丹蓄水层的奥卡拉和萨旺尼石灰岩 位于佛罗里达西南部。 目标是确定（1）如果 （2）什么是“三个代表”？ （3）这些岩石的胶结历史 与含水层的水文地球化学历史有关。 工作 包括分布、性质和地球化学评价 含水层胶结物的特征以及它们之间的关系 这取决于含水层的水文学和水化学性质。 成岩产物将用标准的 岩相学技术、微探针和同位素分析。 水文学和水化学将采用 现有数据。 地下水流路径、流量和 将计算化学质量通量。 化学演化 将沿着流动路径与穿越的地质进行比较， 水泥地球化学 这项研究的结果将是一个现实的，预测性的 现代区域碳酸盐岩中的碳酸盐胶结作用模式 含水层 结果将告诉我们成岩过程中发生了什么， 地点和原因 这将是第一个全面的 现代区域承压含水层调查， 关于水泥。 因此，它将作为一个测试， 从碳酸盐岩的许多例子中得出的想法和模型 古区域含水层中的胶结作用。

This is a systematic and integrated petrographic, hydrologic, and hydrochemical study of carbonate cementation in the Ocala and Suwannee Limestones of the upper Floridan aquifer in southwestern Florida. The objectives are to determine (1) if cements are forming and if so, why, (2) what is the source of the cements, and (3) how the cementation history of these rocks relates to hydrogeochemical history of the aquifer. Work includes evaluation of the distribution, nature, and geochemical signatures of the aquifer cements and the relationship of these attributes to the hydrology and hydrochemistry of the aquifer. The diagenetic products will be characterized by standard petrographic techniques, and microprobe and isotopic analyses. The hydrology and hydrochemistry will be investigated using existing data. Groundwater flow paths, flow volumes, and chemical mass fluxes will be calculated. Chemical evolution along flow paths will be compared to the traversed geology and cement geochemistry. The result of this study will be an actualistic, predictive model of carbonate cementation in a modern, regional carbonate aquifer. The results will tell what happens diagenetically, where, and why. This will be the first comprehensive investigation of a modern, regional, confined aquifer with respect to cementation. As such, it will serve as a test of the ideas and models derived from the many examples of carbonate cementation in ancient regional aquifers.