Bone Beds and Crinoidal Sands of the Delaware Limestone of Central Ohio

Westgate, Lewis G.; Fischer, Richard Philip

doi:10.1130/gsab-44-1161

Cited by 5 publications

(12 citation statements)

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“…Within the formation, single species of several invertebrate groups, particularly pelecypods, brachiopods and tentaculitoids, may be common (Wells, 1947). The occurrence of bone beds, crinoidal sands, and shaly partings was thought to indicate a shallow-water deposition (Westgate and Fischer, 1933), though, as of this study, it is now known that the deposits are transgressional lags. Sparling (1988) thought that the Columbus might have been deposited in conditions similar to that of the Onondaga, cooler waters of a broad, subtropical shelf.…”

Section: Depositional Historymentioning

confidence: 64%

“…The Columbus depositional environment began as a clear, open sea, but the presence of ripples toward the top (Sparling, 1988) indicates that the sea was shallowing through time. It was long thought that during Delaware time, the seas of Ohio were very shallow, though no ripple marks had been reported (Westgate and Fischer, 1933). Recent studies from other regions, however, indicate that the environment of deposition was deepening.…”

Section: Depositional Historymentioning

confidence: 99%

“…Recent studies from other regions, however, indicate that the environment of deposition was deepening. Westgate and Fischer (1933) chose to ignore evidence for a deep-water origin of the Delaware Limestone. In addition to the lack of ripple marks, they reported bone beds devoid of anything but phosphatic material and eolian minerals, high concentrations of mud, pyrite, faunas dominated by a few species, and shaly partings.…”

Section: Depositional Historymentioning

confidence: 99%

“…These deposits were interpreted as current lag deposits, the result of shallow wave reworking. At the unconformity atop the Columbus, the fragments are found only in erosional depressions (Westgate and Fischer, 1933). Bentley (1988) reported no large fossil remains from the bed at the Columbus-Delaware contact.…”

Section: Faunal Studiesmentioning

confidence: 99%

“…Nearly all of the fish fragments collected by Westgate and Fischer (1933) were broken, worn and abraded, probably due to wave action. Brachiopods and corals also showed signs of rounding, and ripple marks were visible in the units just below the bone bed.…”

Section: Faunal Studiesmentioning

confidence: 99%

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Taxonomic revision and paleoecology of Middle Devonian (Eifelian) fishes of the Onondaga, Columbus and Delaware limestones of the eastern United States

Martin¹

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to determine the units from which the fish specimens originally came. This method allowed reasonable inference into the provenance of the museum specimens. The stratigraphy indicates that the seas of New York and Ohio were deepening throughout the Eifelian, terminating in the dark shale beds of the Givetian stage. The rock units of both areas are characterized by a series of aggradations and inundation events. Of the 41 taxa of fish originally found in the two museums, only nine are considered valid as a result of this study. Macropetalichthys sullivanti was a benthic dweller found in the deeper units of the upper Moorehouse and Seneca members of the Onondaga Formation and the Delaware Limestone as well as the shallower units of the upper Columbus. M. rapheidolabis is considered a junior synonym of M. sullivanti. Palaeomylus and Ptyctodus were both durophagous fishes that probably stayed near the bottom of the sea. Ptyctodus was found only in the upper Moorehouse, but Palaeomylus was found in the upper Columbus, Delaware and the upper Moorehouse. Rhynchodus was found in the same units, but was a predator with shearing dentition. Deinodus bennetti was a common element of the upper Moorehouse and was a ptyctodont. It is likely, based on dental elements in the Buffalo Museum of Science, that D. bennetti was durophagous. Deinodus ohioensis, n. sp., a shallow water fish very similar to D. bennetti is formally described. Little can be theorized about its feeding strategy because most of the dental elements studied were imbedded in matrix. Onychodus and Machaeracanthus were large, mobile predators that moved in and out of deeper waters, perhaps into shallow waters to feed. Both possess large tooth whorls and elongate jaws. Machaeracanthus is formally placed in the family, Ischnacanthidae, based on these whorls and Machaeracanthus major is considered a junior synonym of M. peracutus.

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Section: Depositional Historymentioning

confidence: 64%

Section: Depositional Historymentioning

confidence: 99%

Section: Depositional Historymentioning

confidence: 99%

Section: Faunal Studiesmentioning

confidence: 99%

Section: Faunal Studiesmentioning

confidence: 99%

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Taxonomic revision and paleoecology of Middle Devonian (Eifelian) fishes of the Onondaga, Columbus and Delaware limestones of the eastern United States

Martin¹

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Trace Metal and Major Ion Inputs into the Olentangy River from an Urban Storm Sewer

Gardner

Carey

2004

Environ. Sci. Technol.

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Trace metal clean techniques were used to sample and analyze the input of dissolved trace metals, major ions, and dissolved organic carbon (DOC) from a storm sewer along an urban highway in Columbus, OH. The outfall, draining a 3.6 ha sewershed with 100% impermeable surface area, discharges into the Olentangy River. Dissolved Pb (average concentration of 3 nM) and dissolved Zn (average concentration of 127 nM) were found to be much lower in concentration than reported in previous investigations of dissolved metals in urban stormwater runoff. Average concentrations of dissolved Cr (1 microM), Ni (0.087 microM), and Cu (0.33 microM) were similar to those reported in previous studies. The storm sewer is shown to be a significant source of V, Ni, and Zn to the river. The outfall is also a significant source of Na, NH4, Cl, and DOC. The storm sewer input is depleted in NO2 and NO3 as compared to the river, reflecting the highly agricultural land use of the watershed upstream of the sewershed. Input from the storm sewer is also depleted, as compared to the river, with respect to dissolved Mg, Sr, and U with probable sources in the limestone/shale bedrock and glacial till-derived soils in the watershed.

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Basinwide stratigraphic synthesis and sequence stratigraphy, upper Pragian, Emsian and Eifelian stages (Lower to Middle Devonian), Appalachian Basin

Straeten

2007

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A new synthesis of the Lower to Middle Devonian (upper Pragian, Emsian and Eifelian) succession across the Appalachian Basin has been developed by high resolution event and sequence stratigraphic analysis. The correlation of numerous marker beds and a hierarchy of cycles in the interval of the Oriskany Sandstone to lower Hamilton Group provide a refined picture of the depositional patterns, faunal changes, formation to member-level (and finer) relationships, and sea-level trends. The succession begins above the Wallbridge Unconformity, or its correlative conformity, which lies beneath the Oriskany Sandstone, not above it as previously thought. The new sequence-stratigraphic framework of Oriskany to lower Hamilton strata comprises nine ‘third order’ stratigraphic sequences (cycles), though an interval of some 25 million years. At a coarse scale, the eustatic Pragian to Eifelian sea-level curve for Euramerica of Johnson et al. (1985) shows broad variance with the Appalachian curve, reflecting the regional influence of the Acadian orogeny. However at the finer sequence-scale, the Euramerican sea-level trends are recognizable in the Appalachian Basin succession.

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Bone Beds and Crinoidal Sands of the Delaware Limestone of Central Ohio

Cited by 5 publications

References 0 publications

Taxonomic revision and paleoecology of Middle Devonian (Eifelian) fishes of the Onondaga, Columbus and Delaware limestones of the eastern United States

Taxonomic revision and paleoecology of Middle Devonian (Eifelian) fishes of the Onondaga, Columbus and Delaware limestones of the eastern United States

Trace Metal and Major Ion Inputs into the Olentangy River from an Urban Storm Sewer

Basinwide stratigraphic synthesis and sequence stratigraphy, upper Pragian, Emsian and Eifelian stages (Lower to Middle Devonian), Appalachian Basin

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