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Showing 1 to 20 of 166 for “"Foraminifera"”.
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Recent foraminifera of Trinity Bay, Texas
… morphologic variation, and distribution of the Foraminifera. Two foraminiferal assemblages are recognized: 1) a bay assemblage characterized by low taxonomic diversity and the dominance of Ammotium and Ammonia; and 2) a deltaic marsh assemblage characterized by wholly agglutinated species. An …
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The shallow-water foraminifera of Bermuda
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology, 1933.
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The evolution and palaeobiogeography of mesozoic planktonic foraminifera
… that were thought to be the earliest planktonic foraminifera. The first reactions of the palaeontological community were negative but in the subsequent forty years our knowledge of Jurassic planktonic foraminifera has expanded considerably. A thorough re-evaluation of the Oberhauser and Fuchs …
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Cenozoic deep-water agglutinated foraminifera in the North Atlantic
… Paleogene) "flysch-type" agglutinated foraminiferal assemblages and their modern analogs in the North Atlantic and adjacent areas have been studied to provide an overview of their spatial and temporal distribution and utility for paleoenvironmental analysis. Over 200 species of …
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Investigation into the post-mortem transport of benthic foraminifera
Palaeoenvironmental reconstruction using foraminifera relies on the assumption that assemblages reflect the ecological conditions at the time of deposition. However, the distribution of taxa can be greatly affected by transport and reworking of tests. This is particularly important in high energy …
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Mexican Tertiary Biostratigraphy and Paleontology--Larger Foraminifera and Corals
Made available in DSpace on 2014-12-09T20:34:23Z (GMT). No. of bitstreams: 1 6612329.pdf: 13314174 bytes, checksum: f4e863f6984829142e6f62f487505748 (MD5) Previous issue date: 1966
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Distribution of Foraminifera on the North Carolina Continental Shelf
Made available in DSpace on 2014-12-09T20:34:33Z (GMT). No. of bitstreams: 1 6808216.pdf: 5223209 bytes, checksum: 77d78f6d835884953cf3f3d62a486d48 (MD5) Previous issue date: 1967
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Climate proxies in planktic foraminifera: Environmental or biomineralisation controls?
The calcite shells (or ‘tests’) of foraminifera are among the best archives of Earth’s past climate. Numerous trace elements and isotopes in foraminiferal fossils have been applied as proxies to reconstruct ocean environments over geological time. However, the proxy-environment correlations often …
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Cenozoic deep-water agglutinated foraminifera in the North Atlantic
Thesis (Ph. D.)--Joint Program in Oceanography (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), February 1988.
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Zinc and cadmium in benthic foraminifera as tracers of ocean paleochemistry
Benthic foraminiferal δ13C, Cd/Ca, and Ba/Ca are important tools for reconstructing nutrient distributions, and thus ocean circulation, on glacial-interglacial timescales. However, each tracer has its own "artifacts" that can complicate paleoceanographic interpretations. It is therefore …
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Albian microbiostratigraphy (foraminifera and Ostracoda) of S.E. England and adjacent areas
The microfauna (foraminifera and Ostracoda) of the Albian Stage has been thoroughly documented by previous authors and many zonal schemes have been proposed. While these schemes have been defined on very thorough research, the majority have been defined on one fossil group, and occasionally on one …
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Neogene to quaternary foraminifera from the western margin of southern Africa
… how the margin evolved. Fossil shells (tests) of foraminifera (singlecelled protists) from twenty cores from the Namibian shelf (199 to 309 m water depth) and three cores from the western slope (874 to 3631 m water depth) of South Africa were studied to determine the middle Miocene to Quaternary …
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Stratigraphy and Planktonic Foraminifera of the Upper Cretaceous Selma Group, Alabama
Made available in DSpace on 2015-05-12T22:33:41Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7105173.PDF: 11717544 bytes, checksum: 7747e5bbc77b7cbe83c79258898743a8 (MD5) Previous issue date: 1970
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Benthic foraminifera from the Orange-Luderitz shelf, southern African continental margin
An investigation of the benthic foraminifera in the surficial sediments of the continental shelf and upper slope off the Orange River mouth and the Namib Desert was undertaken as an adjunct to sedimentological and geophysical investigations being conducted by members of the Joint Geological …
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Zinc and cadmium in benthic foraminifera as tracers of ocean paleochemistry
Benthic foraminiferal δ13C, Cd/Ca, and Ba/Ca are important tools for reconstructing nutrient distributions, and thus ocean circulation, on glacial-interglacial timescales. However, each tracer has its own "artifacts" that can complicate paleoceanographic interpretations. It is therefore …
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Foraminifera from outcrops of the Pierre Shale (Upper Cretaceous) of North Dakota
… of microfossils, known to the writer, include Foraminifera, Radiolaria, sponge spicules and Ostracoda. It was hoped that a study of the Foraminifera would provide a basis and illustrate the affinity to the Pierre of calcareous, buff colored strata that crop out in the valley of the Sheyenne …
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Community and trophic responses of benthic Foraminifera to oxygen gradients and organic enrichment
… World Ocean. This will favour organisms, such as Foraminifera (testate protists), that tolerate low-oxygen conditions and may lead to an overall decline in marine biodiversity. With this in mind, community and trophic responses of benthic Foraminifera were investigated at two contrasting sites in …
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