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 133 for “"Late Quaternary"”.
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Late quaternary sedimentation in the Eastern Angola Basin
… near-bottom depositional environment during the late Quaternary. Sediments deposited during glacial intervals contain markedly lower carbonate, higher levels of organic carbon, and more abundant siliceous biogenic components, fecal pellets, and pyrite. Sedimentation rates during the past 200-300 …
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Late-quaternary environmental change at Eastbourne, East Sussex
This study is an examination of the late-Quaternary palaeoenvironments of the Eastbourne area, The principal techniques employed are pollen, Foraminifera, Ostracoda, Mollusca and sediment particle size analyses. The lithostratigraphic investigation, using hand auger and a commercial drilling rig, …
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The late quaternary vegetational history of Holderness, Yorkshire
… of plants into this country, particularly in Late-glacial and early Flandrian times, when the region was joined to the continent by dry land. As a distinct and somewhat isolated region of low-lying land which must have been rather waterlogged for much of Post-glacial time it would have …
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Late Quaternary vegetation history of Craven, Yorkshire Dales.
This thesis investigates new late Quaternary vegetation records from four sites in the Craven District of the Yorkshire Dales. The chosen sites fall along an east-west transect broadly following the line of the south Craven Fault. The rationale for site selection was not based on conventional …
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Late Quaternary ice-ocean interactions in central West Greenland
A greater knowledge of the interactions between the Greenland Ice Sheet and climate is critical to understanding the possible impacts of future global warming, including ice sheet contribution to global sea-level rise and perturbations to ocean circulation. Recent acceleration, thinning and retreat …
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Late quaternary palaeoenvironments at Vankervelsvlei, near Knysna, South Africa
This dissertation outlines the results of a study undertaken to describe the environmental history of Vankervelsvlei, a schwingmoor-type bog near Knysna on the south coast of South Africa. The study relies heavily on the use of fossil pollen as an indicator of vegetation change from which …
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Late Quaternary Mississippi River Incised Valley Fill: Transgressive Depositional Packages
… and paleogeographic reconstructions. Late Pleistocene glaciation and consequent lowered sea leve lresulted in reentrenchment of the Mississippi River incised valley. Meltwater floods from proglacial lakes incised into older deposits followed by braided fluvial (substratum) aggradation …
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THE LATE QUATERNARY HISTORY OF THE RIVER ERME, SOUTH DEVON
… between 1000 and 2000 years BP and has been correlated with a former area of marshland recorded in the tithe maps of the region. It is suggested that the Erme valley was previously more estuarine than today and that alluviation and infilling of the Erme's channel in the last 1000-2000 years has …
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The Late Quaternary palaeoecological history of the Great Wold Valley
… Valley, yielded fossil-rich deposits from the late-glacial and Flandrian periods. Although the sedimentary history of this site would appear to be incomplete, an exceptionally detailed image of the palaeoecological history of this valley emerges. The transition from the late-glacial fen and …
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Late Quaternary variability in coastal changes along the Texas Gulf coast
… the Texas coast became prominent in the mid-late Holocene when the rate of sea-level rise decreased. Man-made activities such as the construction of jetties and dams exacerbate the more recent changes. Transects of sediment cores that extend from back-barrier to beyond the toe of the …
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Late quaternary Alaskan paleoclimate : geoarchaeological insights into the Pleistocene-Holocene transition.
… moist, boreal forest conditions in the middle to late Holocene, though this transition was not a smooth one.
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Late quaternary palaeoenvironments of the Sandveld, Western Cape Province, South Africa
… prompts a fresh synthesis as to the nature of late Quaternary environmental changes in the southwestern Cape's fynbos biome. The study is centred on Verlorenvlei, a remote coastal lake and swamp system which is ideally situated to investigate the complex interactions between late Holocene …
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Speleothem-based hydroclimate proxies and Late-Quaternary paleoclimate in the Western Mediterranean
… controlled by orbital forcing and further modulated by AMOC-driven atmospheric reorganizations on multi-centennial to millennial timescales. Taken together, the speleothem records demonstrate a high sensitivity to hydroclimate changes in the Western Mediterranean and indicate that regional …
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Late Quaternary climate variability and terrestrial carbon cycling in tropical South America
… lacustrine and marine sediment cores to explore late Quaternary climate variability and connections between past climate change and terrestrial carbon cycling in tropical South America. I investigate temporal and spatial trends in South American Summer Monsoon precipitation by reconstructing …
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