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Miamitown Shale
A PALEOECOLOGIC COMPARISON OF TWO EDRIOASTEROID (ECHINODERMATA) ENCRUSTED PAVEMENTS FROM THE UPPER ORDOVICIAN CORRYVILLE FORMATION OF FLORENCE, KENTUCKY AND THE MIAMITOWN SHALE OF SHARONVILLE, OHIO, U.S.A
—Isopach map of Fairview Formation and Miamitown Shale.
American Upper Ordovician Standard. IX. Bedrock Geology of Eastern Hamilton County, Ohio
JAWED POLYCHAETES FROM THE UPPER SYLVAN SHALE (UPPER ORDOVICIAN), OKLAHOMA, USA
FIGURE 1 —Location of type Cincinnatian samples. Abbreviations used in the ...
Stratigraphic column showing the traditional stratigraphic subdivisions of ...
Cincinnatian Geology in Southwest Hamilton County, Ohio
Fig. 16. Partially Winnowed packstones. Like unwinnowed packstones above,...
LATE ORDOVICIAN JAWED POLYCHAETE FAUNAS OF THE TYPE CINCINNATIAN REGION, U.S.A
Fig. 8. Barren mudrock illustrating banding indicative of event depositio...
Comparative Taxonomic Richness and Abundance of Late Ordovician Gastropods and Bivalves in Mollusc-rich Strata of the Cincinnati Arch
Fig. 15. Unwinnowed packstones. The matrix and pore fillings of these pac...
High-Resolution Faunal Gradient Analysis and an Assessment of the Causes of Meter-Scale Cyclicity in the Type Cincinnatian Series (Upper Ordovician)
Golden olden days of the Ordovician, Silurian Seas, and Pleistocene Ice: An introduction to the geology of the Dayton, Ohio, area
Abstract This article is aimed at providing an overview of the geology of the Dayton region to those who seek an introduction to Dayton’s geological story. The oldest rocks exposed in the area are Ordovician (Katian Stage, Cincinnatian Series in local North American usage) in age, and are world famous for the quantity and quality of their fossils. Unconformably overlying the Ordovician strata are Silurian (Llandovery–Wenlock Series) dolomites, limestones, and shales, which represent tropical seas that were at times rich in crinoids, corals, brachiopods, and other invertebrates. A large time gap (unconformity) in the rock record of some 420+ million years occurs between the Silurian and the Pleistocene “Ice Age” deposits of the area. Significant changes to the natural environment in the Dayton area have occurred during the Anthropocene. A number of localities that can be reached within about 30–40 minutes from downtown Dayton are described. This is effectively Montgomery County and adjacent counties. As such this treatment is brief and not meant as a compendium but as an introduction and outline of Dayton’s geology and geological history. The localities selected illustrate Dayton’s geological heritage, from the Ordovician to the Pleistocene, while several of the area’s distinctive natural landmarks are discussed. A number of the landforms are expressions of the Niagara Escarpment, where resistant Silurian limestones and dolomites overlie less resistant older rocks.