Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"Paleoenvironment"”.
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Paleoenvironment reconstruction in extreme climates using organic geochemical investigations
Organic geochemistry provides researchers with an extensive suite of tools for reconstructing past environments. Using these tools, a set of unique locations situated in climatic extremes have been investigated. During the Early Cenozoic the planet was much warmer than today. In addition to this …
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Dental Ecometrics as a Proxy of Paleoenvironment Reconstruction in the Miocene of South America
… metrics as proxies for the reconstruction of paleoenvironments in the Miocene of South America.</p><p>In Chapter 2, I compile complete, non-volant mammalian species lists for 85 localities across South America as well as 17 localities across Australia and New Guinea. Climatic and habitat …
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Biogeochemistry and inorganic geochemistry as indicators of the paleoenvironment and paleohydrology of the Al-Azraq Basin, Jordan
This study investigates the biogeochemical and inorganic geochemical indicators for past environments and paleohydrology of a high resolution sediment record from the Al-Azraq Basin, Jordan. The second largest basin in Jordan, it is an important aquifer for a majority of the population in this arid …
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Chronology and paleoenvironment of Peoria Silt deposition and Jules Geosol development along the Illinois Valley, Illinois, USA
The chronology and processes that led to the formation of the Jules Geosol were previously not well understood. This last glacial paleosol developed in thick loess deposits (Peoria Silt) proximal to the Illinois River Valley around the time of the last glacial maximum. Two sites, New Cottonwood …
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Paleoenvironment and paleoclimate of NE Pangea in early Permian-linking chemo- and cyclo-stratigraphy, Bogda Mountains, NW China
… geochemical analyses have been used to interpret paleoenvironment and paleoclimate in cm-m-scale high-order cycles (HCs: 0.1-100 kyrs), low-order cycles (LCs: 1-10 Myr), and critical events of late Paleozoic ice age (LPIA: 320-260 Myr ago). Four organo-facies are one-to-one correlated with the …
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Geochemical investigations of Cenozoic cool-water carbonate sediments of South Australia : implications for diagenesis, paleoenvironment and paleoclimate / Hossain Rahimpour-Bonab.
Copies of authors previously published articles inserted.
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Paleogene-Early Neogene palynomorphs from the Eastern Equatorial Atlantic and Southeastern Florida, USA: Biostratigraphy and paleoenvironmental implications
… age refinement and to detect subtle changes in paleoenvironment and paleoclimate during the Paleocene-Early Eocene (ODP Hole 959D and Alo-1 Well) and Late Eocene-Early Miocene (ODP Hole 959A and W-17001). Palynofacies analysis and lithologic descriptions supplemented palynomorph data for …
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Unique Preservation of Fossil Ghost Fish in the Green River Formation
… and spatial maps to show trends, interpret the paleoenvironment, and examine the unique preservation. Interpretation of the results suggests freshwater entering the lake from the SW region of the study area during the UGF bed deposition. This research suggests that the unique style of …
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The Growth and Ecology of Upper Cambrian Microbialite Biostromes from the Notch Peak Formation in Utah
… both reefs shed light on the paleoecology and paleoenvironment of upper Cambrian microbialite reef-building communities.</p>
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U-Pb calcite dating of fossil eggshell and its impact on continental terrestrial sedimentology
… samples that reflected an aridifying continental paleoenvironment, the Tel Ulaan Chaltsai sediments align with the lower Baruungoyot Formation. This represents not only the first uppermost post-rift sequence to be radiometrically calibrated within the Eastern Gobi Basin, but also the first …
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Paleoenvironmental Reconstruction of the Late Cretaceous Eastern Gulf Coastal Plain in Georgia and Alabama
<p>The present study reconstructs the regional paleoenvironment (particularly paleoclimate) of the Late Cretaceous Eastern Gulf Coastal Plain of Georgia and Alabama using paleobotanical, paleoecological and geochemical methods in order to evaluate the Late Cretaceous climate of the Southeastern …
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Paleoclimate and mammal paleocology during the paleocene of North America: insights from stable isotopes.
… greenhouse warming and the relationship between paleoenvironment and taphonomy of fossil mammals. The combination of unique and unstable faunas and globally equable climate resulted in complex ecological and biogeographical patterns among Paleocene mammals that contrast from well-structured …
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Revisão sistemática dos Enchodontidae (Euteleostei: Aulopiformes) do Brasil
… are considered as inhabiting marine strict paleoenvironment, being commonly found in sedimentary deposits of the Upper Cretaceous from north Africa, south Europe, western Asia, southwestern North America, northeastern and south Brazil. In south Brazil, this family was recorded in the …
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Analysis of Fossil Pollen from a Pleistocene Cypress Forest Preserved on the Northern Gulf of Mexico Continental Shelf
… sections have recorded the same event in the paleoenvironment, making additional dates necessary to establish more reliable time control.</p>
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Geochemical Approaches to Paleobiology, Paleoclimatology, and Chronostratigraphy of the Cretaceous Cloverly Formation
… deposits. I examine the ecohydrology and paleoenvironment of a local Cloverly fossil assemblage by analyzing the 18O of biogenic phosphates from a large set of vertebrate fossils. This has resulted in the first quantitative surface-air temperature estimate (22.3 +/- ~ 5 °C) for the …
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Holocene Periods of Aggradation and Incision, Hanson Creek, Washington
… insight into changes in channel morphology and paleoenvironment within the region over the last 8000 years. Stratigraphically and spatially coincident archaeological evidence reveals information related to human occupation during the latter half of the epoch. Using LiDAR imagery and field …
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RELATING TAPHONOMIC ANALYSIS OF BISON REMAINS TO CULTURAL AND SPATIAL INFERENCE: A STUDY OF THE FAUNAL REMAINS FROM THE TONGUE RIVER BUFFALO JUMP SITE (24RB2135)
… of this site. Information on bison evolution, paleoenvironment, and bone size and weathering will be explored in order to refine the theory that the site contains multiple kill events over time and which time frames these events encompass.
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RELATING TAPHONOMIC ANALYSIS OF BISON REMAINS TO CULTURAL AND SPATIAL INFERENCE: A STUDY OF THE FAUNAL REMAINS FROM THE TONGUE RIVER BUFFALO JUMP SITE (24RB2135)
… of this site. Information on bison evolution, paleoenvironment, and bone size and weathering will be explored in order to refine the theory that the site contains multiple kill events over time and which time frames these events encompass.
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