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Showing 1 to 11 of 11 for “"radiolarian"”.
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Pliocene-Pleistocene Radiolarian Investigations of the Equatorial Oceans
… and develops the application of Polycystine radiolarian microfossils to the investigation of Late Cenozoic deep-sea sediments recovered by the Deep Sea Drilling Program (DSDP) and Ocean Drilling Program (OOP), and utilizes these advances in undertaking a detailed palaeoenvironmental study of …
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RADIOLARIAN BIOSTRATIGRAPHIC AND PALEOCEANOGRAPHIC STUDIES OF MONTEREY-LIKE ROCKS OF THE HUMBOLDT BASIN, NORTHERN CALIFORNIA
… have been investigated for the presence of radiolarian fauna. The vast majority of the radiolaria found are cold water indicators, however there are four distinct periods of invasion of warm water fauna. Two minor ones occurring at 11.5ma and approximately 8.0ma and two major events at 5.0ma …
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Vertical flux, ecology and dissolution of radiolaria in tropical oceans : implications for the silica cycle
Radiolarians which settle through the oceanic water column were recovered from three stations (western Tropical Atlantic-Station E, central Tropical Pacific-Pi and Panama Basin-PB) using PARLUX sediment traps in moored arrays at several depths. The taxonomic diversities of the radiolarian …
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Vertical flux, ecology and dissolution of radiolaria in tropical oceans : implications for the silica cycle
Radiolarians which settle through the oceanic water column were recovered from three stations (western Tropical Atlantic-Station E, central Tropical Pacific-P1 and Panama Basin-PB) using PARFLUX sediment traps in moored arrays at several depths. The taxonomic diversities of the radiolarian …
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Middle and upper jurassic foraminifera and radiolaria of Scotland : an integrated biostratigraphical and palaeoenvironmental approach
… analysis of foraminiferal and radiolarian distribution from all the major Middle and Upper Jurassic marine deposits of Scotland. These sampled sites are divided between two basins with Staffin Bay and Bearreraig Bay within the Inner Hebrides Basin, North West Scotland; and …
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BIOSTRATIGRAPHIC AND PALEOCEANOGRAPHIC RECONSTRUCTION OF THE LATE MIOCENE IN BAJA CALIFORNIA AND TRES MARIAS ISLANDS, MEXICO
A reconnaissance of sediments containing radiolarians was performed for localities along Baja California and Tres Marias Islands. Only seven land-base sections (El Cien, Tortugas, Arroyo Tiburon, Cabo San Lucas-La Paz, San Felipe, Arroyo Hondo and Maria Cleofas) together with Experimental Mohole …
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The ecology of colonial radiolarians : their colony morphology, trophic interactions and associations, behavior, distribution, and the photosynthesis of their symbionts
Colonial radiolarians (Spumellaria) are among the most common and abundant large zooplankton, but they have been little studied by modern biologists. Colonies were found on 98% of epipelagic diving stations in the period from 1977 to 1979. Measured abundances ranged from .04 to 540 colonies per m3. …
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Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil
… and biostratigraphy of foraminiferal, radiolarian and diatom assemblages have been studied through the upper Aptian to Maastrichtian sedimentary succession of the Sergipe Basin, northeastern Brazil. The systematic taxonomy of the microfauna studied is documented and completely revised. …
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Triassic-Jurassic biochronology of the eastern Iskut River map area, northwestern British Columbia
… corals, and gastropods; a planktonic fauna of radiolarians; and a nektonic fauna of coleoids and ammonoids. The ammonoids (27 genera, 47 species) and radiolarians (14 genera, 18 species) are described. Other taxa are identified and listed in Appendix III. Ammonoids, bivalves, and radiolarian of …
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Silica diagenesis and its pore-scale influence on the characteristics of the upper and lower Bakken shales, Williston Basin, North Dakota and Montana
… in the setting of the Bakken Formation’s radiolarian-rich lower and upper shale members. This study describes and characterizes silica in the lower and upper Bakken shales to estimate the extent to which its diagenesis has altered pore networks within the shales. This study incorporates …
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Pilot Study using Elemental Geochemistry as a Means of Discriminating Chert Stratigraphy in the Roberts Mountains Allochthon, Nevada
… in 5 ranges, all with known ages based on radiolarian biostratigraphy. These samples are assigned to either the Slaven, Cherry Spring, or upper Vinini chert, or equivalent units. Several analytical methods were employed to test their effectiveness in discriminating the cherts. The methods …