Geoloaic District. Subsequent Stratigraphic Studies in This Area
DEVONIAN STRATA AND PALEOENVIRONMENTS: CHAUTAUQUA COUNTY REGION: NEW YORK STATE GORDON C. BAIRD and GARY G. LASH Department of Geosciences State University of New York College at Fredonia Fredonia, New York 14063 INTRODUCTION The history of the study of the Paleozoic stratigraphic divisions in New York State spans, at least, two centuries, and it records the early development of important concepts centrally germane to the study of sedimentary basins worldwide (see Tesmer, 1989). The works of James Hall, John Clarke, HenryS. Williams, Joseph Barrell, and George Chadwick are well known to most sedimentary workers, as are those of numerous subsequent workers. In particular, the sedimentary sequences of the Allegheny Plateau Region (••southern Tier" region) served as important sources of information for refinement of the fac ies concept ar.d for the widespread recognition of the westwardly prograding Catskill Delta Complex which is the primary Paleozoic story recorded in Southern Tier bedrock deposits (see Chadwick, 1924, 1933; Cooper, et al., 1942; Caster, 1934; Woodrow, 1985). ---- The first significant geologic work relating to the Chautauqua County region was presented in James Hall's (1843) Survey of the Fourth Geoloaic District. Subsequent stratigraphic studies in this area inclu e Clarke (1903), Chadwick (1923, 1924), Caster (1934), Pepper and de Witt (1950, 1951) and de Witt and Colton (1953). In northwest Pennsylvania, significant synthetic contributions include I.C. White (1881), Butts (1906-1908), Chadwick (1925), Caster ·(1934), Pepper et al. (1954). In Ohio, deposits equivalent to parts of the New York and - Pennsylvania Upper Devonian section (Chagrin Shale) have been the subject of recent paleoenvironmental studies (see Weidner and Feldmann, 1983; Schwimmer and Feldmann, 1990).
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