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 13 of 13 for “"modern analogue"”.
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Ashes to Ashes: Identifying archaeological fuels
… hearth, and ash samples using comparison to modern analogues. Modern analogue fuels were ashed at 2000C, 4000C, and 9000C then analysed with a suite of methods, the results were then used to inform the development of an approach for the identification of archaeological fuels. These methods …
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Environmental Impacts on the Development and Dune Activity of Oxbow Lake along the Southwest Coast of Lake Michigan at Saugatuck, Michigan USA
… and storminess, and results can be used as a modern analogue for coastal dune activity during times of high lake level.
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Sediment Provenance of Tsunami Deposits: Implications for Assessing the Relative Intensity of Paleotsunamis from the Sendai Coastline of Japan
… it is important to document characteristics of modern analogues like the 2011 event. This study utilizes surface distributions of foraminifera from coastal and offshore locations within Sendai Bay to determine the provenance for 2011 Tohoku tsunami sediments preserved within rice fields on the …
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Past Environmental Change On The Eastern Andean Flank, Ecuador
… Tigre East [MTE]) obtained from the Ecuadorian modern lower montane forest. The sediments preserved were analysed using eight analytical techniques, allowing an insight into the ecosystem’s potential response to projected changes derived from their past responses. Palaeoecological studies on the …
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Carbon cycling: The role of Methane and Copper in an early ocean analogue Lake Matano
This dissertation examines the carbon cycle of a modern ferruginous environment (Lake Matano, Indonesia), with a primary focus on the critical role of methane in carbon redistribution in this system. In addition, the mobility and availability of copper (Cu) (an essential component of microbial …
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Human-rainforest interactions in Island Southeast Asia: Holocene vegetation history in Sarawak (Malaysian Borneo) and Palawan (western Philippines)
This research employs a modern analogue approach to examine relationships between pollen, vegetation change, and land use in the tropical environments of Island Southeast Asia over the past ~5000 years. Interpretation of fossil pollen data relies upon uniformitarian principles. Few modern pollen- …
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RECONSTRUCTING CLIMATE ON THE GREAT PLAINS FROM BURIED SOILS: A QUANTITATIVE APPROACH
… The model was developed based on a study of modern analogue soils and climate on the Great Plains. BuSCR reconstructs mean annual precipitation (MAP), moisture index (Im), and mean annual temperature (MAT) with statistically significant results (r2 = 0.4, p < .0001) and low mean average …
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Geology, Petrology, and Tectonic Setting of the Mafic Rocks of the 1480 MA Old Granite-Rhyolite Terrane of Missouri, USA
… western United States may be the most similar modern analogue. Between 1400 to 1200 Ma ago, an incipient continental rift may have formed along the axis of the 1500 to 1400 Ma old magmatic belt. Mafic magma emplaced during the rifting event possibly included the Skrainka Mafic Group of …
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The Use of Diatoms to Infer Environmental Change of the Lower White River, Southeastern Arkansas
… and diatom assemblages and used as an analogue for past floods. The 2008 spring flood inundated and homogenized the entire floodplain; also represented by the predominantly planktonic diatom assemblage suggesting riverine input. Indicator species for eutrophication were also recorded …
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The Fate and Mobility of Heavy Metals in East Anglian Salt Marsh Sediments
… Anglian salt marsh anoxic pond sediments as a modern analogue to test the effect of diagenesis on these paleoredox proxies. This site is particularly applicable because of an intriguing geochemical dichotomy that exists; the anoxic sedimentary porewater beneath ponds either contains high …
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The Late Quaternary palaeoecological history of the Great Wold Valley
… Wolds.This is complemented by a study of modern analogue sites where a vegetation survey had been undertaken. Plant propagules, molluscs and bryophytes from the surface soil and modern pollen rain (trapped over a one year period) were collected from each site. These data were incorporated …
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Droughts and flooding rains: a fine-resolution reconstruction of climatic variability in Western Victoria, Australia, over the last 1500 years.
… sites with a conductivity < 22,000 μS/cm in the modern calibration set (min: 81 μS/cm; max: 21,540 μS/cm; SD: 5592.7 μS/cm). The resulting model is robust, with a jack-knifed r² of 0.89 and an RMSEP of 0.238 log μS/cm (equating to 9.8% of gradient length), which compares favourably to other …
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Characterization of an Upper Permian tight aas reservoir : a multidisciplinary, multiscale analysis from the Rotliegend, Northern Germany
… and core data were compared to a reservoir analogue in the Panamint Valley, California, United States. Depositional environments of the Permian Upper Rotliegend II included perennial saline lakes, coastal parallel sand belts comprising wet, damp and dry sandflats and aeolian dunes with …