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 9 of 9 for “"mud volcanoes"”.
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Seepage of hydrocarbon bearing fluids at the Carlos Ribeiro and Darwin mud volcanoes (Gulf of Cadiz)
Submarine mud volcanism is an important pathway for transfer of deep-sourced fluids enriched in hydrocarbons and other elements into the ocean. Mud volcanoes (MVs) occur in abundance on all oceanic plate margins, so fluxes of methane (CH4) and other chemical constituents from mud volcanism are …
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Deep submarine volcanoes in two geodynamic settings (Canary Basin and Gulf of Cadiz): morphology and shallow structure
… between 4800 and 5200 m, nineteen newly inferred mud volcanoes (MV01 to MV19) as well as fifty-eight previously recorded mud volcanoes from various fluid expulsion fields in the Gulf of Cadiz (MV20 to MV77), with special focus on five mud volcanoes on the Moroccan Margin located at water depths of …
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Mud Volcano Systems: Structure, Evolution and Processes
Mud volcano systems erupt sediment and fluid onto the Earth’s surface producing edifices up to 25 km3 in volume however, little is known about how such volumes are transported through the Earth’s crust. This thesis investigates whether transport is through mud-dyke-sill complexes, or is diapiric. …
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The role of abiotic and biotic interactions in deep-sea benthic habitats of the northeastern Gulf of Cadiz
… geological (e.g., salt and shale diapirism, mud volcanism), and biogenic (e.g., methane derived authigenic carbonates formation, coral mound aggradation) processes drive the formation of a large variety of geoforms including, among others, contourite drifts, channels, diapiric ridges, mud …
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Liberation of low molecular weight organic acids from sedimentary organic matter and their role on microbial activity
… used for microbial metabolism. In terrestrial mud volcanoes (TMVs), sedimentary material is rapidly ascending from great depth to the surface. Therefore LMWOAs that were produced from buried macromolecular organic matter at depth are also brought up to the surface, and fuel heterotrophic …
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Seismic Attributes: Taxonomic Classification for Pragmatic Machine Learning Application
… and agile minds that can readily distinguish mud volcanoes from salt diapirs or multiples from reflectors. It is a difficult practice, and individuals spend their entire careers devoted to it. Seismic attributes have always been considered by many to be an art form — a “dark art” — practiced …
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Biodiversity, distribution patterns and trophic position of meiobenthos associated with reduced environments at continental margins
… cold seeps associated with pockmarks or mud volcanoes, and located in the North and South Atlantic Ocean. The following questions were assessed: (1) What factors have an important influence on the seep meiobenthos concerning structure, diversity and distribution at multiple scales? (2) To …
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An Investigation of the Geochemistry and Hydrogeology of the Queen Charlotte Fault
… numerous water column anomalies (i.e seeps), mud volcanoes, microbial mats, and indicators of seabed fluid flow along the QCF. Analyses of pore fluids recovered from the 2017 cruise revealed abundant overprinting signatures of carbonate precipitation, anaerobic oxidation of methane, and …
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Some geological implications of the flow of clay-water mixtures
… for understanding the mechanism of eruption in mud volcanoes. The third problem centres on the different problem of mixing in a turbulent buoyant plume. First, the injection of gas and water from a central source into a two-dimensional layer of clay confined between two circular horizontal …