Early Pennsylvanian paleotopography and depositional environments, Rock Island County, Illinois earlypennsylvani18lear Year: 1985 1979 Leary: Pennsylvanian Flora, Rock Island County, Illinois 21 Loess and very thin glacial drift. Shale, black to dark gray, fissile to blocky with interbedded thin sandstones. Grades down to greenish gray sandy shales and light colored pyritic sandstones. Limestone, buff, fine to medium grained, numerous brachiopods. Limestone, very light gray, sublithographic to lithographic, very brecciated, green clay and shale streaks, graded downward to greenish gray an
Early Pennsylvanian paleotopography and depositional environments, Rock Island County, Illinois earlypennsylvani18lear Year: 1985 1979 Leary: Pennsylvanian Flora, Rock Island County, Illinois 21 Loess and very thin glacial drift. Shale, black to dark gray, fissile to blocky with interbedded thin sandstones. Grades down to greenish gray sandy shales and light colored pyritic sandstones. Limestone, buff, fine to medium grained, numerous brachiopods. Limestone, very light gray, sublithographic to lithographic, very brecciated, green clay and shale streaks, graded downward to greenish gray and light brownish gray limestone, hard and brittle, numerous wavy bands and irregular thin beds. Cave fillings common with fine to medium angular sand interbedded with greenish clay and shale. Fragments of plants and much pyrite is common. Limestone, very light gray to very light buff, dolomitic, lithographic to sublithographic, styolitic, weathers to thin slabs, some brecciation Limestone, brownish to bluish gray and dark colored, fine to coarsely crystalline with thin dark shale laminae, brecciated with shale and limestone matrix. LTJ\ Dolomite, brownish-gray, fine grained Figure 14. Stop 4. Allied Stone Company quarry, stratigraphic section. SE'/4, Sec. 14, T. 17 N., R. 2 W, Rock Island County, Illinois.
Size: 786px × 2544px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
