Abstract
The Pennsylvanian (Virgilian) Holder Formation, New Mexico, consists of shales and sandstones interbedded with paleosol-capped limestones. Approximately 10 of these cycles were described in 13 stratigraphic sections. Analyses of paleosols on limestone surfaces and sedimentary structures in overlying sandstones indicate an upward transition from nonmarine to marine conditions. Diagenesis of sandstones was compared to diagenesis of previously studied limestones using transmitted-light, cathodoluminescence, and back-scattered electron microscopy, energy dispersive analysis, and electron microproble analysis for Ca, Mg, Fe, Mn, and Sr. Results suggest that sandstones underwent three temporally distinct stages of diagenesis.
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