Publications
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Biostratigraphy and paleoecology of lower Paleozoic, upper Cretaceous, and lower Tertiary rocks in U.S. Geological Survey New Madrid test wells, Southeastern Missouri
The paleontology and biostratigraphy of Tertiary, Cretaceous, and Paleozoic rocks in the upper Mississippi embayment are incompletely known because marine fossils are only locally present in these rocks. This study concerns material from two U.S. Geological Survey test wells drilled in New Madrid County, southeastern Missouri, as part of earthquake hazard studies in the northern Mississippi Embaym
Authors
N. O. Frederiksen, Laurel M. Bybell, R. A. Christopher, A. J. Crone, L. E. Edwards, T. G. Gibson, J. E. Hazel, J. E. Repetski, D. P. Russ, C. C. Smith, L. W. Ward
Paleocene-Eocene boundary in the eastern Gulf Coast
No abstract avaiable.
Authors
N. O. Frederiksen, T. G. Gibson, Laurel M. Bybell
Paleocene to middle Eocene stratigraphy of Alabama
No abstract available.
Authors
T. G. Gibson, E. A. Mancini, Laurel M. Bybell
Facies changes in the Hatchetigbee Formation in Alabama-Georgia and the Wilcox-Claiborne Group unconformity
No abstract available.
Authors
T. G. Gibson, Laurel M. Bybell
Shear zone between the Inner Piedmont and Kings Mountain belts in the Carolinas
The Kings Mountain shear zone, which marks the boundary between the Inner Piedmont and Kings Mountain belts near the NC-SC state line, is a northeast-striking, steeply to moderately dipping zone of ductile mylonitic deformation and late-stage semibrittle deformation. The zone is at least 60 km long and is no more than a few hundred metres wide. It truncates rock units of both belts. The juxtaposit
Authors
J. Wright Horton,
Permian and Triassic rocks near Quinn River Crossing, Humboldt County, Nevada
Permian and Triassic rocks near Quinn River Crossing, Humboldt County, Nevada, consist of four structural blocks: (1) a Lower Permian volcanic block; (2) a Permian(?) chert-arenite block; (3) a Lower Permian limestone block; and (4) a Permian and Triassic block. The contacts between the Permian volcanic block and the others are interpreted as thrust faults or glide surfaces. None of these rocks ar
Authors
Keith B. Ketner, Bruce R. Wardlaw
Geology of the Ridge and Valley Province, northwestern New Jersey and eastern Pennsylvania
The rocks seen in this segment of the field trip range in age from Middle Ordovician to Middle Devonian and constitute a deep basin-continental-shallow shelf succession. Within this succession, three lithotectonic units, or sequences of rock that were deformed semi-independently of each other, have somewhat different structural characteristics. Both the Alleghenian and Taconic orogenies have left
Authors
Jack B. Epstein
Aeromagnetic map of northwest South Carolina
No abstract available.
Authors
Frederic E. Riggle, Isidore Zietz, David L. Daniels
A late Wisconsinan ice readvance near Manchester, New Hampshire
No abstract available.
Authors
Byron D. Stone, Carl Koteff
The use of a paired comparison model in ordering stratigraphic events
Data from lowest and highest occurrence events in several stratigraphic sections are analyzed by means of a paired comparison model with ties. The model produces an estimated relative geochronological ordering of these events. This ordering must be compared with actual observations for revision and interpretation.
Authors
Lucy E. Edwards, R.J. Beaver