Catskill facies of New York State

Mencher, Ely

doi:10.1130/gsab-50-1761

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The range is surrounded by the plateau except on the east side where the mountains drop abruptly ( 3,000 ft) into the Hudson Valley Lowlands. The Catskills are described as a dissected plateau (Mencher 1939) covered by a resistant conglomerate overlying shales and sandstones. The strata lie almost flat with a slight dip to the west, northwest, and southwest.…”

Section: Description Of the Regionmentioning

confidence: 99%

The Spruce-Fir Forests of the Catskill Mountains

McIntosh¹,

Hurley²

1964

Ecology

View full text Add to dashboard Cite

Twenty—two forest stands of the Catskill Mountains, New York, in which spruce (Picea rubens), balsam (Abies balsamea), or both were present in the tree canopy, were sampled by means of the quarter method. A matrix of index of similarity values was calculated on the basis of the relative frequency, density, and dominance (importance value) of the mature trees plus the relative density of the saplings. From the matrix a two—dimensional ordination was constructed. The stands were distributed on the first order primarily on the basis of the proportions of balsam and spruce, on the second order primarily on the proportions of hardwoods to spruce and balsam. An ordination based on ten selected species of understory plants was significantly correlated with the first order. The spruce—fir forest of the Catskills is compared with that of the northern and southern Appalachian Mountains as reported in other studies. Although certain northern species present in the Catskills are absent from the southern Appalachians and some species endemic to the southern Appalachians. Spruce is completely absent from several peaks of the Catskill Mountains; no stand was found in which balsam was completely absent. An explanation is advanced based on the ecological behavior of spruce and fir.

show abstract

Section: Description Of the Regionmentioning

confidence: 99%

The Spruce-Fir Forests of the Catskill Mountains

McIntosh¹,

Hurley²

1964

Ecology

View full text Add to dashboard Cite

show abstract

“…To the north, northeast, and east the mountains drop off in a series of precipitous step-like ledges to the level of the Allegheny Plateau to the north and northeast and to the Hudson River Lowlands to the east. To the south and west they descend gradually to the level of the surrounding plateau (Mencher 1939).…”

Section: Introductionmentioning

confidence: 99%

Forests of the Catskill Mountains, New York

McIntosh¹

1972

Ecological Monographs

View full text Add to dashboard Cite

The modern forest of the Catskill Mountain region, New York, particularly the area within the New York State Forest Preserve, was studied and compared with the presettlement forest as determined from surveyors' records. The most notable changes were a marked drop in the proportion of beech (Fagus grandiflora) and hemlock (Tsuga canadensis) and increases in sugar maple (Acer saccharum), red oak (Quercus borealis), and chestnut oak (Quercus prinus). Reproduction and size—class data suggest that in old—growth hemlock stands hemlock is replaced by hardwoods and is not a part of a homogeneous climax forest in spite of its prominence in the presettlement forest. Beech does not give evidence, in the dynamics of the modern forest, of returning to its presettlement dominance. Some pioneer stands are as rich in species and as diverse as are those usually thought of as climax. The comparison of presettlement and recent forests is related to recent discussion of climax concept.

show abstract

“…sopach Contours Sand-Shale Ratio Lines (Modified from Ayrton, 1963, p. 4) Sandstone 8 identification of coarse clasts (Barrell 1914;Mencher 1939;Sevon 1969;Perry and deWitt 1977;Sevon and others 1978;Seaman 1979;and Kirby 1981) and thin-section petrography (Mencher 1939;Lucier 1966;Sulenski 1969;Kramers and Friedman 1971;Humphreys and Friedman 1975; and Sevon and others in press) of Catskill rocks. These studies indicate a mixed terrane of low-grade metamorphic and sedimentary rocks and a variable occurrence of feldspar.…”

Section: Isopach and Lithofacies Mapmentioning

confidence: 99%

Nonmarine facies of the Middle and Late Devonian Catskill coastal alluvial plain

Sevon

1985

The Catskill Delta

View full text Add to dashboard Cite

Nonmarine Catskill facies were deposited by many rivers flowing northwestward from an eastern source area and comprise a suite of sedimentary rocks that (1) thin and decrease in average grain size from southeast to northwest, (2) increase in average grain size from base to top, (3) are dominantly red in color, (4) are variable both laterally and vertically, and (5) were deposited mainly by either meandering or braided streams. The marine to nonmarine transition is a complex interval composed of various facies that represent repeated alternations of marine and nonmarine depositional environments. It is frequently many tens of meters thick. Meandering-stream deposits comprise sandy to gravelly, crossbedded, channel facies and finer-grained, overbank facies arranged in fining-upward sequences. Delta-plain meandering-stream deposition was by streams of low gradient, high sinuosity, shallow water depth, and low erosional capability. The cycles generated are usually only a few meters thick and are dominated by finer-grained floodbasin sediments. Alluvial-plain meandering-stream deposition was by streams of moderate to high gradient, moderate sinuosity, moderate water depth, and moderate to large erosional capability. The generated cycles are frequently many meters thick, dominated by the coarse-grained, channel facies, and show evidence of considerable channel erosion. The braided-stream facies comprises trough-crossbedded sand deposited in shallow to moderate water depths on an alluvial plain. These deposits are almost exclusively gray in color and are sandwiched between the delta-plain and alluvial-plain meandering-stream sequences. The end of Catskill deposition was accompanied by local erosion of the alluvial plain, basin-wide transgression, and demise of the Acadian Mountains as a source area.

show abstract

Catskill facies of New York State

Cited by 5 publications

References 0 publications

The Spruce-Fir Forests of the Catskill Mountains

The Spruce-Fir Forests of the Catskill Mountains

Forests of the Catskill Mountains, New York

Nonmarine facies of the Middle and Late Devonian Catskill coastal alluvial plain

Contact Info

Product

Resources

About