Early Diagenetic Effects of Phases and Abundances of Water in Skeletal Carbonates in Coral Reef and Associated Sediments on San Salvador Island, Bahamas

植物和动物的碳酸盐骨骼是海相碳酸盐沉积物的主要成分。这些骨骼的化学和矿物学成分既控制着骨骼材料对成岩过程的反应，也充当着监测成岩过程的示踪剂。尽管水(液体和结合的无机H2O和OH-)是碳酸盐骨架中第二或第三丰富的成分，但人们对不同相的存在、它们的丰度或这些不同相如何影响成岩作用或受成岩作用影响知之甚少，即使在最重要的沉积类群的骨架中也是如此。这项研究的目的是研究碳酸盐骨架中的固有水与早期成岩作用之间的相互作用。这项工作的第一个目标将是对主要骨架和产生沉积物的类群的活体代表骨骼的水分含量进行定量表征。水的存在数量、存在的阶段以及这些阶段的丰度将与骨骼矿物学、化学和显微结构以及分类学相关。第二阶段的工作将研究早期成岩过程与这些相同类群化石骨架中水的形式和丰度的相互作用，以及水的丰度和形式的早期变化如何影响这些骨骼随后的成岩变化。

Carbonate skeletons of plants and animals are the major components of marine carbonate sediments. The chemical and mineralogical compositions of these skeletons both control responses of skeletal material to and act as tracers for monitoring diagenetic processes. Although water (liquid and bound inorganic H2O and OH-) is the second or third most abundant component of carbonate skeletons, little is known about the different phases present, their abundances, or how these different phases affect or are affected by diagenetic alteration, even in skeletons of the most important sediment-producing taxa. The goals of this research are to study the interactions between intrinsic water in carbonate skeletons and early diagenetic processes. The first object of the work will be to quantitatively characterize the water content of skeletons of living representatives of major framework and sediment producing taxa. Amount of water present, the phases in which it occurs, and the abundances of these phases will be related to skeletal mineralogy, chemistry, and microstructure, and to taxonomy. The second phase of the work will examine interactions of early diagenetic processes with the forms and abundance of water in fossil skeletons of these same taxa, and the ways in which early changes in abundance and form of water affect the subsequent diagenetic alteration of these skeletons.