973 resultados para Schenectady County (N.Y.)--Description and travel--Early works to 1800


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Among the groups of oceanic microfossils, only Radiolaria occur in abundances and preservation states sufficient to provide biostratigraphic control for restricted intervals within sediments recovered in Hole 1223A. The distribution of these microfossils has been divided into four major intervals, A-D. Radiolaria distribution Interval A occupies the depth range 0-3.0 meters below seafloor (mbsf), where the abundance of specimens is very low and preservation is poor. Radiolaria distribution Interval B occupies the depth range 3.02-7.1 mbsf. Radiolaria in Interval B are locally rare to abundant and well preserved, and assemblages range in age from pure early Eocene to early Eocene admixed with late Neogene taxa. Radiolaria distribution Interval C occupies the depth range 7.1-36.99 mbsf and is characterized by sediments either barren of microfossils or containing extremely rare early Eocene specimens. Radiolaria distribution Interval D occupies the depth range 36.99-38.7 mbsf (base of the recovered sedimentary section), where early Eocene Radiolaria are present in rare to common frequencies, but opal-A to opal-CT recrystallization has degraded the preservation state. The late Neogene assemblage of Radiolaria distribution Interval B is dated at 1.55-2.0 Ma, based on occurrences of Eucyrtidium matuyamai, Lamprocyclas heteroporos, and Theocorythium trachelium trachelium. The early Eocene assemblage of Radiolaria distribution Intervals B and D is somewhat problematically assigned to the Buryella clinata Zone.

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"Names of the mayors of the city of Schenectady, from the incorporation of said city to the present time, and the periods of their continuance in office respectively, with the name of the recorder appointed for said city, under the act of April 29, 1833": p. 2.

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Advertisement for "The 'Shaker and Shakeress' monthly" on verso of title page (p. [2]).

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Transportation Department, Office of University Research, Washington, D.C.

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"This edition is strictly limited to 200 copies, This copy is number 54."

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Reprinted in part from the Manchester guardian and the English review.

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Description based on: Dec. 1992; title from cover.

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