Florence Bascom Geoscience Center
Publications
Insights on why graphic correlation (Shaw's method) works
In 1964 A.B.Shaw presented a method of correlating fossilferous sedimentary rocks based on interpretation of graphic plots of first- and last-occurrences of taxa. Because there is no way to determine the true total ranges of fossil taxa, it is instructive to test the accuracy of the method using hypothetical datasets. The dataset used here...
Edwards, Lucy E.
The Fishburne Formation (lower Eocene), a newly defined subsurface unit in the South Carolina coastal plain
No abstract available.
Gohn, Gregory; Hazel, J. E.; Bybell, Laurel M.; Edwards, Lucy E. Topographic control of the deglaciation of eastern Massachusetts: Ice lobation and marine incursion
No abstract available.
Stone, Byron D.; Peper, John D. Late Wisconsinan glaciation of New England: A proceeding volume of the symposium: Late Wisconsinan glaciation of New England held at Philadelphia, Pennsylvania March 13, 1980
No abstract available.
Larson, Grahame J.; Stone, Byron D. 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...
Horton, J. Wright 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...
Ketner, Keith B.; Wardlaw, Bruce R. A late Wisconsinan ice readvance near Manchester, New Hampshire
No abstract available.
Stone, Byron D.; Koteff, Carl Range charts and no-space graphs
No-space graphs present one solution to the familiar problem: given data on the occurrence of fossil taxa in separate, well-sampled sections, determine a range chart; that is, a reasonable working hypothesis of the total range in the area in question of each taxon studied. The solution presented here treats only the relative sequence of...
Edwards, Lucy E. 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.
Edwards, Lucy E.; Beaver, R.J. Analysis of slump slip lines and deformation fabric in slumped Pleistocene lake beds
Slumped glacial delta sands and silts exhibit flexural slip folds and low-angle thrust faults where the beds remained coherent during slump deformation. Alternating cross-cutting relationships between f (sub l ) and f (sub r ) fold axial planes indicate that these fold groups are conjugate sets, related to the same slump movement. Analysis of...
Stone, Byron D. Origin and emplacement of the ultramafic rocks of the Emigrant Gap area, California
The ultramafic bodies of the Emigrant Gap area are part of a mafic complex within a large composite pluton of the northern Sierra Nevada. The pluton was magmatically emplaced and is surrounded by an aureole of hornblende-hornfels facies rocks. Inclusions of country rock in ultramafic rock are of pyroxene-hornfels facies and appear to have been...
James, O.B.