649 resultados para 1054
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The biogenic-related elements Ca, Sr, Ba, P, Cd, scavenged Al, and Ti were analyzed by inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) for Core NS93-5 from the west slope of the South China Sea. Terrestrial input as estimated from the accumulation of Ti was higher during glacials than during interglacials. Carbonate accumulation rates are inversely related to those of terrestrial input, suggesting higher production of calcareous phytoplankton during interglacials. The accumulation patterns of authigenic Sr, Ba, P, and Cd match that of carbonate, further indicating higher calcareous phytoplankton production during interglacials. Scavenged Al and excess SiO2, which is related to biogenic opal, exhibit higher accumulation rates during glacials and correspond with changes in terrestrial input. This indicates that terrestrial input driven is important to siliceous phytoplankton production but not for calcareous phytoplankton production. As calcareous phytoplankton is the dominant component of the biogenic sediments in the South China Sea, particularly during interglacials, previous inference of higher productivity in the South China Sea during glacials based on only the biogenic opal proxy needs to be reconsidered.
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Bibliographical foot-notes.
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Magis catalog 38, item 1054.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Wright III, 1054.
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Mode of access: Internet.
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Pars maxima.--Sex priores, and cum preafatione.-- Decas.
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Vol. 3: "Supplement to The adventures of Aboo Zyde of Surooj; comprising an Arabic and Persian dictionary of all the terms contained in that celebrated work.".
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"Observaciones criticas sobre el romance de Gil Blas de Santillana ... su autor Don Juan Antonio Llorente": p. [897]-1054.
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Incluye un cuadro estadístico administrativo.
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Includes index in v. 2.