Diagenesis of Sandstones and Limestones in the Foreland Shelf of Kansas

热卤水进入前陆陆架沉积物 美国中部大陆伴随着沃希托奥连斯在 宾夕法尼亚和二叠纪。 水带来了热量， 同时促进成岩作用， 前陆地区，并有助于形成石油和矿产 存款 一种涉及热流体横向运动的成岩情景 浅水与大多数模型不同。 这项研究将试图建立的重要性， 这种对宾夕法尼亚中晚期砂岩的区域加热 以及堪萨斯东南部的石灰岩 早期的研究表明， 石灰岩和砂岩在晚白垩世 成岩作用，形成了巴洛克式的方解石状胶结物， 成分来自不同的来源。 拟议 研究工作将为一个小型试验区建立成岩模型。 该模型将评估区域事件的重要性， 控制着本区的成岩作用， 砂岩和石灰岩 研究将包括光学，阴极发光，和回- 散射电子显微镜研究的关系 胶结物的成岩相和地层学。 流体 包裹体、同位素和痕量元素数据将建立 成岩作用条件和组分来源。

Entry of heated brines into foreland shelf sediments of the US Midcontinent accompanied the Ouachita orogeny during the Pennsylvanian and Permian. The water brought heat and possibly other constituents at the same time to promote diagenesis in foreland areas and contributed to formation of oil and mineral deposits. A diagenetic scenario involving lateral motion of hot water at shallow depths differs from most models. This research will attempt to establish the importance of this regional heating for Middle and Late Pennsylvanian sandstones and limestones in southeastern Kansas. Earlier work has shown that limestones and sandstones there acted separately during late diagenesis, forming baroque dolomite-like cements from constituents derived from different sources. The proposed research will develop a diagenetic model for a small pilot area. The model will assess the importance of regional events and local controls in diagenesis of the area and will integrate diagenesis and sandstones and limestones. Research will include optical, cathodoluminescence, and back- scattered electron microscopy to investigate relations of diagenetic phases and stratigraphy of the cements. Fluid inclusion, isotope, and trace-element data will establish conditions of diagenesis and sources of constituents.