Stratigraphic architecture within delta plain deposits in the Upper Cretaceous Neslen and Farrer Formations, Book Cliffs, Utah

Fluvial and Marine Depositional Environments Determined From Groundwater Chemistry and Calculated Clay‐Cation Compositions

“…In addition, the type and amount of organic matter present in fluvial versus marine sediments is vastly different and an important consideration in petroleum exploration (e.g., Hunt, 1996). Traditional differentiation of fluvial and marine environments requires acquisition, interpretation, and integration of extensive amounts of outcrop data, tens to hundreds of well core and logs, seismic and paleontologic data (e.g., Brekke & Roenitz, 2021; Casson et al., 2021; Greb et al., 2021; Kjaerefjod et al., 2022; Knox et al., 2006; Zhang et al., 2020). Often there is inadequate availability or access to these data, in which case much of the evaluation is based on outcrop or examination of well cuttings or core for clay mineral percent assemblages, distribution, and depositional patterns to give information on the environment of deposition of the sediments (e.g., Al‐Mojel et al., 2020; Chamley, 2001; Freed, 1980; Ingles & Anadon, 1991; Ingles & Ramos‐Guerrero, 1995; Waters et al., 2020; Xu et al., 2017).…”