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Batesville Formation
Moorefield Formation and Ruddell Shale, Batesville District, Arkansas
Moorefield–Batesville Stratigraphy and Sedimentation in Arkansas
Stratigraphic column showing the conformable relationships between the Faye...
Stratigraphy of Upper Mississippian Rocks of Northern Arkansas
Upper Devonian–Mississippian stratigraphic framework of the Arkoma Basin and distribution of potential source-rock facies in the Woodford–Chattanooga and Fayetteville–Caney shale-gas systems
Mechum River Formation; Late Precambrian (?) alluvium in the Blue Ridge Province of Virginia
Present Activity and Petroleum Possibilities in the Arkansas Valley: ABSTRACT
Osage Formations of Southern Ozark Region, Missouri, Arkansas, and Oklahoma
Age of Penters Chert, Batesville District, Arkansas : GEOLOGICAL NOTES
Abstract From Batesville, Arkansas, in Independence County, follow Arkansas 69 north to Cushman (Fig. 1). Turn left (west) on the county road (paved) just beyond the Cushman General Store. If you consider this intersection the zero point of a road log, the pavement ends at about mile 3.5 (5.6 km). At mi 5.1 (8.2 km) you will drive past a good outcrop of Ordovician age limestones of the Plattin, Kimmswick, and Fernvale formations. Of particular interest here is the Plattin-Kimmswick contact, which is sharp and “welded” as well as angular. The Plattin occurs in a small synclinal fold that is truncated by the basal sandy Kimmswick. An orange-colored zone several yards up the road marks a fault that lowers the Fernvale to a position adjacent to the Kimmswick at road level. (See W. W. Craig’s discussion of the lithologies of these units elsewhere in this volume.) At mi 7.0 (11.3 km) is the entrance to Love Hollow Quarry (Fig. 2). The outcrop described below can be found approximately 0.2 mi (0.3 km) north of Love Hollow. The exposure consists of approximately 60 ft (18 m) of Brassfield, St. Clair, and Lafferty limestones. The shale on which the Brassfield rests at this locality is probably Ordovician age. The lithologic sequence consists of 4 ft (1.2 m) of spar-cemented, coarse fossil debris, overlain by 4 ft ( 1.2 m) of St. Clair, which in this locality is represented by a biomicrite. The contact at this point is slightly angular. The St. Clair is
Activities in South Texas, 1937–1938
Pre-Cambrian Rhyolite Discovered in Well in Northwestern Arkansas: GEOLOGICAL NOTES
Oil and Gas Possibilities in the Arkansas Ozarks
Age of Jackfork and Stanley Formations of Ouachita Geosyncline, Arkansas and Oklahoma, as Indicated by Plants
Geology of the Ouachita Mountains and linkages to North American late Paleozoic orogenesis
ABSTRACT Correlations of Paleozoic strata from the southern Appalachian, Black Warrior, and Ouachita-Arkoma forelands show varying lithofacies and stratigraphic thicknesses for coeval deposits, as well as differences in the location of disconformities. This field trip will visit stops throughout the Ouachita Mountains and Arkoma basin to observe clastic strata variability in the Cambrian, Ordovician–Silurian, Mississippian, and Pennsylvanian periods. The spatial-temporal relationship between these units provides a first-order understanding of orogenic processes along the southeastern and southern Laurentian margin during the amalgamation of the supercontinent Pangea. We present a summary of detrital zircon geochronology from the three foreland systems and correlative stops in the Ouachita Mountains to discuss sediment provenance, paleo-reconstructions, and to identify needed geochronology information for future studies. Cambrian through Devonian units in the southern Appalachian foreland of Alabama and Ouachita thrust belt are dominated by Proterozoic Grenville (1250–900 Ma) and Granite-Rhyolite (1550–1300 Ma) province grains, with minor Archean grains. Mississippian and Pennsylvanian units in the southern Appalachian and Ouachita-Arkoma forelands exhibit similar age spectra and are primarily characterized by a dominant Grenville peak, alongside smaller Appalachian (490–270 Ma), Granite-Rhyolite, Yavapai-Mazatzal (1800–1600 Ma), and Wyoming (>2400 Ma) peaks. Proportional differences in the age spectra can be identified when comparing individual stratigraphic intervals in the forelands, and have been interpreted to represent influxes of different drainage systems associated with along strike versus perpendicular sediment routing. Mississippian strata in the Ouachita Mountains, Arkoma basin, and Black Warrior basin exhibit unique age spectra in comparison to other Ouachita and southern Appalachian signatures. A dominant Appalachian peak (<480 Ma), alongside smaller Grenville, Granite-Rhyolite, Yavapai-Mazatzal, and Wyoming peaks identified in the Batesville Sandstone of the Ouachita-Arkoma foreland, suggests a possible connection to barrier island depositional systems to the east. Pennsylvanian strata in the Black Warrior basin exhibit similar age spectra to those of samples from the southern Appalachian and Ouachita-Arkoma forelands.