Results 21 to 30 of about 2,615 (200)
The Calcium Isotope (δ44/40Ca) Record Through Environmental Changes: Insights From the Late Triassic
Geochemistry, Geophysics, Geosystems, 2022 Calcium isotopes (δ44/40Ca) are particularly useful in palaeo‐environmental studies due to the key role of carbonate minerals in continental weathering and their formation in seawater.
Zsófia Kovács +7 more
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Acta Societatis Botanicorum Poloniae, 2015 Species composition of phytoplankton, its biomass, share of nannoplankton, and concentration of chlorophyll and pheophytin in phytoplankton and nannoplankton were assessed basing on the materials collected from two pelagic stations of Lakę Żarnowieckie ...
Józefa Sosnowska
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The first evidence of marine Badenian transgression near Koceljeva (central Paratethys, Western Serbia) [PDF]
Geološki Anali Balkanskoga Poluostrva, 2019 This paper presents the first detailed biostratigraphic investigation of deposits cropping out in stream Sumijevac near Koceljeva (western Serbia). The most important fossil communities and their significance are presented.
Jovanović Gordana +2 more
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, 2013 At present about one third of the carbon dioxide (CO2) released in the atmosphere from fossil fuel burning is absorbed by the oceans. The invasion of anthropogenic CO2 into the oceans increases seawater acidity and decreases carbonate ion concentration ...
E. Erba, G. Faucher, C. Bottini
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Ciencias Marinas, 1993 An oceanographic cruise was performed in the central region of the Gulf of California from March 31 to April 9, 1985. Nineteen hydrographic casts to 0, 25, 50, 75 and 100 m were made in four transects to estimate the size-fractionated biomass of the ...
JR Lara-Lara +3 more
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Preliminary studies on nannoplankton productivity [PDF]
, 1974 The contribution of the nannoplankton to the total productivity was studied for nine months in coastal waters of Cochin. On an average, - nannoplankton accounted for 66.40% of the observed productivity.
Vijayaraghavan, Sumitra +2 more
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Quaternary nannoplankton in the Northeast Java Basin
Berita Sedimentologi, 2021 In Indonesia, nannofosils are commonly used for age estimation on Miocene marine sediment, but they are rarely performed on Quaternary sediment. This paper introduces two nannofossil biozones, Martini (1971) and Backman et al. (2012) and the comparison between the two biozones.
Rubiyanto Kapid +2 more
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Geologija, 2015 In this paper we report new specimens of an interesting Paratethyan decapod Styrioplax exiguus Glaessner, 1928, which extend the known palaeogeographic and stratigraphic distribution of the species.
Rok Gašparič, Eva Halásová
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Geologica Carpathica, 2019 Calcareous nannofossils found in the Cergowa beds of the Dukla and Fore-Dukla tectonic units in the Outer Carpathians indicate a time of deposition in the range of the NP23–NP24 nannoplankton zones of the Lower Oligocene.
Pszonka Joanna +2 more
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Spermatophyta Molecular Clock: Time Drift and Recent Acceleration. [PDF]
Plant Environ InteractExponential increase in the base substitution rate in recent geologic time. ABSTRACT Angiospermae radiation is widely recognized as a mid‐Cretaceous event, but the adaptive radiation of Asarum and Viola as spring ephemerals also occurred during the Quaternary. To better understand the evolution of Angiospermae through geological time, a robust and well‐
Osozawa S.
europepmc +2 more sources