Figure 4 - uploaded by James Craft
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Late Devonian paleogeographic map-study area highlighted (modified from Blakey, 2017 and Zambito, 2011; shoreline extended into western NY; all boundaries approximate)

Late Devonian paleogeographic map-study area highlighted (modified from Blakey, 2017 and Zambito, 2011; shoreline extended into western NY; all boundaries approximate)

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The orthoquartzitic Salamanca conglomerate records a high-energy Upper Devonian seacoast, with at least meso-tidal range, as indicated by a pebbly shoreface and beach, a tide-dominated delta prograding over marine wave-rippled fine sands, and a sub-aqueous large-scale (4m-6m foresets) dune field formed by strong flood tides. Most of the sequence re...

Contexts in source publication

Context 1
... paleolatitude of 25-30 degrees south (Fig.4 ) and a warm, seasonally wet-dry climate has been posited for the Upper Devonian of New York (e.g., Woodrow et al., 1973;Scotese, 2000). ...
Context 2
... m over the ~ 14 million year duration of the Upper Devonian. In western New York, Faill (1985; Fig. 7) showed an estimated subsidence/deposition rate of ~ 100 m/million years (or roughly 2 million years to deposit the ~200 m Cattaraugus Formation). Coupling that rate with an average shoreline advance of ~ 30 km/million years (Dennison, 1985; Fig. 4), gives a rough volumetric deposition rate of three million cubic meters per million years per linear meter of prograding shoreline (or 3 cubic meters of sediment/meter of prograding shore/year). Very approximately then, for a 4 km swath of paleo-coast (such as at LRC), an average of 12000 cubic meters of sediment might be deposited ...

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