Physical stratigraphy of the Genesee Formation (Devonian) in western and central New York

Witt, Wallace De; Colton, George Willis

doi:10.3133/pp1032a

Cited by 11 publications

(9 citation statements)

References 5 publications

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“…In fact, the dominantly dysaerobic, open-shelf facies contains many thin layers of black, fissile, organic-rich shale (e.g., Pepper and deWitt, 1950;Colton and deWitt 1958;deWitt and Colton 1978) that indicate that the boundary between the anaerobic and dysaerobic layers was always close to the sediment-water interface in central and western parts of the basin. However, the dominance of dark gray to gray, bioturbated shales throughout the open-shelf facies implies that most of the time this boundary was below the sediment-water interface.…”

Section: Phasementioning

confidence: 97%

Controls on development of Catskill Delta complex basin-facies

Ettensohn¹

1985

Geological Society of America Special Papers

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Dark, commonly black, fìssile shales represent the basinal facies of the Catskill Delta complex. This dark-shale facies originated in the Appalachian Basin during the Emsian (late Early Devonian) and subsequently spread beyond the Appalachian Basin thus suggesting the importance of regional controls such as paleogeography, paleoclimate, and tectonic regime.The Catskill delta debouched into a subsiding peripheral basin on the eastern margin of a nearly enclosed, equatorial sea. Enclosure prevented deep-water incursions from other water bodies and enhanced the production and concentration of organic matter. Existence in a warm, rainy equatorial belt increased organic productivity and probably formed a nearly permanent thermohaline water stratification that prevented vertical circulation and resulted in anaerobic bottom conditions.Episodes of uplift and deformational loading in the rising Acadian Mountains resulted in closely following or concomitant periods of subsidence through isostatic adjustment in the adjacent peripheral basin. Hence, episodic Acadian uplift not only formed the source of the Catskill clastic wedge, but was also responsible for forming the peripheral basin that received the wedge. Basin subsidence isolated deltaic sediments from other parts of the sea, enhanced water stratification, and augmented net transgression. Rapid aggradation of sediments in nearshore areas due to transgression and the formation of a rainshadow due to uplift in the mountains caused decreased sedimentation on the delta, while concomitant basin subsidence produced abrupt deepening, strong water stratification (bottom anoxia), and migration of clastic-deficient (darkshale) basinal environments shoreward. During intervening periods of tectonic quiescence, subsidence eventually halted, and erosion outstripped the effects of uplift in the mountains, so that the rainshadow was destroyed and abundant clastic influx resumed. As a result, the delta prograded rapidly across former basinal environments. Decreasing subsidence, shallower water, and abundant clastic influx destroyed basinal, bottom anoxia, so that marginally-to highly-oxygenated bottom conditions resumed throughout all delta environments. Five such major cycles of dark, basinal shales alternating with coarser clastics occur in the Catskill Delta complex of the Appalachian Basin. The progressive westward migration of successive cycles reflects the westward migration of Acadian deformation and accompanying basin infilling. 65

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Section: Phasementioning

confidence: 97%

Controls on development of Catskill Delta complex basin-facies

Ettensohn¹

1985

Geological Society of America Special Papers

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“…Fock considers second order Dirac equation in the four dimensional space Fock proper time formalism was developed by J.Schwinger [8] in 1951 and by B.S.De Witt [9] in 1965. It is usually referred to as Schwinger-De Witt proper time method, although it was formulated by Fock.…”

Section: Proper Time Formalism and Fock Gauge Condition (1937)mentioning

confidence: 99%

The Klein–Fock equation, proper-time formalism and symmetry of the hydrogen atom

Novozhilov

2001

Chaos, Solitons & Fractals

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We present main points of some of Fock papers in Quantum Theory, which were not properly followed when published. IntroductionFock papers on Quantum Theory have quite different lifes in Physics. Some of them were immediately recognized with Fock name attached to them. Hartree-Fock approach, Fock space and Fock representation are very well known examples. Another ones were not properly used when published. To this class belong papers where Fock was ahead of time, and his comptemporaries were not able to really understand their importance. Klein-Fock equation, proper-time formalism and symmetry of Hydrogen atom are best examples of Fock papers within such a class.In this lecture we explain main points of these Fock papers and remind Fock interpretation of energy-time uncertainty relation, as well as his ideas on generalization of the concept of physical space published in his last paper.

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“…Localities New York localities and sampled beds listed in approximate stratigraphic order. Sample numbers in the Genesee Group with SD notation (Silurian-Devonian) refer to United States Geological Survey (U. S. G. S.) samples in deWitt and Colton (1978) and Huddle (1981). U. S. G. S. SD samples in the Sonyea and West Falls groups were collected in 1974 by John Huddle (JH) of the U. S. G. S. and U. S. National Museum and William Kirchgasser (WK).…”

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confidence: 99%

“…Type locality of Genundewa Limestone along east side of Canandaigua Lake (opposite Seneca Point on west side of lake), north of Genundewa Point [42°44’15.60”N, 77°19’31.11”W], 900, East Lake Road, 1.6 km north of Vine Valley. Genundewa Limestone at this locality is a 2.43 m interval of styliolinid lenses alternating with gray shales that overlie a 10 cm-thick black shale (House and Kirchgasser, 2008, p. 29); sample bed 6715 SD is the bed immediately above the 10 cm black shale in the section of deWitt and Colton (1978, pl. 4*).…”

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confidence: 99%

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Frasnian Late Devonian conodont biostratigraphy in New York: graphic correlation and taxonomy

Klapper¹,

Kirchgasser

2016

J. Paleontol.

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Two regional composite sections in the Frasnian, Upper Devonian, of New York State result from graphic correlation of conodont species. The first extends from Frasnian conodont zones 3 to 7, the second from Frasnian zones 11 to 13c (we prefer this terminology to “Montagne Noire” or “MN” zonation as the zone-defining species occur throughout the Devonian tropics). Key beds, widely traceable bases of prominent black shales, have been used with only a few exceptions to position the lines of correlation (LOC) in the graphs. Other key beds, not used for positioning, fall exactly on the LOC supporting the hypothesis of their synchrony. Fifty-five conodont species in the New York regional composites are compared with their ranges in the global Frasnian Composite Standard proving no major discrepancies. The taxonomy ofAncyrodella nodosaUlrich and Bassler, widely misidentified in the past, has been clarified through restudy of the type specimens, resulting in its distinction fromA.hamataUlrich and Bassler (=A.buckeyensisStauffer). A new species ofPolygnathellusBassler, which is restricted to Frasnian Zone 4, is kept in open nomenclature because the rarity of specimens is insufficient to determine the extent of intraspecifc variation and whether one or two species are represented in our New York and Western Australian collections.

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Physical stratigraphy of the Genesee Formation (Devonian) in western and central New York

Cited by 11 publications

References 5 publications

Controls on development of Catskill Delta complex basin-facies

Controls on development of Catskill Delta complex basin-facies

The Klein–Fock equation, proper-time formalism and symmetry of the hydrogen atom

Frasnian Late Devonian conodont biostratigraphy in New York: graphic correlation and taxonomy

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