General Contents – Field Book No. 3 [Survey for geologic structure - Caldwell, Ray counties]: Stratigraphy – Bethany Falls, Cherryvale, Galesburg, Hertha, Ladore, Pleasanton, Winterset: Minerals – calcite, clay, limonite, marcasite, pyrite, siderite: Lithologies – chert, limestone, sandstone, shale: Mines/quarries – coal mines/shaft, limestone quarry; Breckenridge Quarry, Major Grimes Coal Mine, Prairie Block Coal Co. Mine: Paleontology – Brachiopods, bryozoans, crinoids, cup corals, Fenestella, fusulinids, gastropods, pelecypods, fossils; some noted by species.: Hydrology – Springs. Streams.: Structure – Joints. Cross beds. Dips, strikes. Fault; dip, strike. Synclines; Jamesport syncline.: Oil/gas – [none noted]: Karst – [none noted]: [...]
