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Showing 1 to 10 of 10 for “"coccoliths"”.
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Selective Dissolution of Recent Coccoliths in the Atlantic Ocean
Made available in DSpace on 2014-12-11T18:10:03Z (GMT). No. of bitstreams: 1 7317403.pdf: 6118427 bytes, checksum: eac83a492b5c5ede25a3d2e8d20fb914 (MD5) Previous issue date: 1972
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Coccoliths and oxygen isotope observations from the sediment surface of the southwest Indian Ocean
The interplay of three important parameters, dissolution, dilution and winnowing seem to be controlling the state in which sediment material is preserved in the study area though most samples examined under the SEM were generally well preserved. The distribution of forty-four coccolithophore …
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Assessing the suitability of Pleurochrysis and associated strains, for simultaneous biofuel production and carbon capture
… as well forming calcium carbonate coccoliths. They are the largest carbon sinks and<br/>one of the largest primary producers of biomass on the planet, with their ancestors being responsible for the deposition of large quantities of chalk. They can also produce high amounts of …
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Tracing hydrological millennial-scale cycles in the late Quaternary of the Cariaco Basin and the southern Gulf of Cádiz using coccoliths and dinoflagellate cysts
… study. The present study demonstrates that coccoliths and dinoflagellate cysts are very useful as paleoclimatological indicators for the elucidation or a better understanding of the late Quaternary regional and global palaeoclimate. This study also reveals new insights in coccolithophore and …
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Particle flux in the Western Black Sea in the present and over the last 5,000 years : temporal variability, sources, transport mechanisms
… Phase II (November-January) - resuspension of coccoliths and terrigenous matter, and Phase III (February-May) river input of terrigenous matter and production of diatoms and silicoflagellates. Once removed from the surface water, particles settle rapidly at a rate of 115 ±70 m/day. Regionally, …
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The chemistry, biology, and vertical flux of oceanic particulate matter
… carbonate and opal in the near surface waters, coccoliths and diatom fragments, deeper. Features of the distributions of particulate matter attributed to the feeding activities of zooplankton were: strong concentration gradients in organisms, mass, and organic matter; enrichment of the >53 μm …
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PCO2 EFFECTS ON THE PRODUCTION OF PELAGIC BIOGENIC CARBONATE AND OCEAN CHEMISTRY: A CASE HISTORY FROM THE CRETACEOUS.
… and D.rotatorius, represented by dwarf coccoliths, and (d) a large number of W.barnesiae deformed specimens affected by reduced size and marked ellipticity. Coccolith dwarfism and “deformation/malformation” are interpreted as the coccolithophorid species-specific response to …
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Petrographic and petrophysical characterization of the Eagle Ford Shale in La Salle and Gonzales counties, Gulf Coast Region, Texas
… echinoderms, bivalves, fish bones, radiolaria, coccoliths and calcispheres are also present. This diversity in microfossils reinforces the cyclic character of the Eagle Ford. Contrary to the commonly believed idea that marine transgression implies deep marine anoxic conditions, this study …
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Composition and characteristics of particles in the ocean : evidence for present day resuspension
… the nepheloid layer include a decrease in small coccoliths and an increase in clays and mineral matter. These compositional variations are more dramatic in the western North Atlantic region, due to dissolution of carbonate at the seafloor, later resuspended into the nepheloid layer. …