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.
Results
Showing 1 to 9 of 9 for “"weathering and erosion"”.
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Adsorption–Desorption Reactions in the Weathering Zone: Implications for Silicate Weathering & the Carbon Cycle
The carbonic acid-driven chemical weathering of silicate minerals removes carbon dioxide (CO2) from Earth's atmosphere. The tectonic processes of uplift, exhumation, and erosion modulate the negative feedback relationship between climate, silicate weathering rates, and atmospheric CO2 removal rates …
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The provenance of the norber erratics, and the formation of post-devensian-deglaciation pedestal rocks with carboniferous limestone pedestals in England, Ireland and Wales
… of the Norber erratics in North Yorkshire, and the origins of a post-Devensian-deglaciation landform, pedestal rocks with Carboniferous limestone pedestals in England, Ireland and Wales. Investigations to determine the provenance of the Norber erratics were undertaken in a study area of …
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The real thing: an investigation into authenticity and the substance of place
This PhD narrative provides a reflective and summary text on research produced over the period 2012-2022. This work comprises publications (peer reviewed papers, book chapters and commissioned reports), supported by artefacts such as film and digital models. This document provides a narrative …
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Natural processes in the degradation of open-air rock-art sites: an urgency intervention scale to inform conservation.
… culture with examples recognized across the Old and New Worlds. It is also one of the most threatened features of human heritage and is susceptible to accelerated decay as a result of anthropogenic and natural processes. Much attention has previously been given to the impact of identifiably human …
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Quantifying the Biogeochemical Impact of Land Plant Expansion in the Mid Devonian and Implications in Marine Anoxic Events
The evolution of land plant root systems occurred stepwise throughout the Devonian, with the first evidence of complex root systems appearing in the mid-Givetian. This biological innovation provided an enhanced pathway for the transfer of terrestrial phosphorus (P) to the marine system via …
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Deterioration of excavated rockslopes : mechanisms, morphology and assessment
Results are reported of laboratory simulated weathering processes on a range of sedimentary rocks and the investigation of the deterioration of rock masses as observed on engineered and quarried rockslopes. The simulated weathering processes include freeze-thaw, wetting and drying, salt weathering …
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The sedimentology, palaeoecology and stratigraphy of cretaceous rocks in N.W. Scotland
Sediments of Cretaceous age in N.W. Scotland outcrop in small, often isolated exposures throughout the Inner Hebrides and Morvern, and have been dealt with cursorily in most previous work on the Cretaceous rocks of Britain. The aims of this study were (i)to propose a formal integrated stratigraphic …
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Geology, mineralogy and geochemistry of the Cerro Matoso nickeliferous laterite, Córdoba, Colombia
… The peridotite body is flanked by ferruginous sandy sediments with interbedded coal beds of the Cienaga de Oro Formation (early Oligocene-early Miocene) and Recent alluvial gravels and sands. The harzburgite consists predominantly of olivine with lesser amounts of orthopyroxene and secondary …
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Echoed Sites and the Unknowable Object
<p>This thesis will discuss the expanded field of sculpture, simulacra, digital technology, and two terms I’ve devised: the <em>unknowable object,</em> and <em>echoed sites.</em> Within these two terms, I’m concerned with the complicated relationship between humans and geology and how we extract …