The book provides a synthesis of the methods used in microfacies analysis, the potential of microfacies in evaluating depositional environments and diagenetic history, and the application of microfacies data in the study of carbonate hydrocarbon…
Sedimentology
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6,949 papers
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Sequence stratigraphy emphasizes facies relationships and stratal architecture within a chronological framework. Despite its wide use, sequence stratigraphy has yet to be included in any stratigraphic code or guide. This lack of standardization…
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Abstract: The complexity of flow and wide variety of depositional processes operating in subaqueous density flows, combined with post-depositional consolidation and soft-sediment deformation, often make it difficult to interpret the characteristics…
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Hyperpycnal flows form in the marine environment when river discharge enters the ocean with suspended concentrations in excess of 36 kg m(-3) due to buoyancy considerations, or as little as 1-5 kg m when convective instability is considered. They…
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Negative carbon isotope anomalies in carbonate rocks bracketing Neoproterozoic glacial deposits in Namibia, combined with estimates of thermal subsidence history, suggest that biological productivity in the surface ocean collapsed for millions of…
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During the past 50 years, the turbidite paradigm has promoted many myths related to deep-water turbidite deposition. John E. Sanders (1926-1999), a pioneering process sedimentologist, first uncovered many of these turbidite myths. This paper…
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Laser ranging is extremely accurate and efficient. Terrestrial scanning lidar (light detection and ranging) applied to outcrop stratigraphic mapping enables researchers to capture laser range data at a rate of thousands of individual X, Y, Z and…
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The deposits of subaqueous sediment gravity flows can show evidence for abrupt and/or progressive changes in flow behaviour making them hard to ascribe to a single flow type (e.g. turbidity currents, debris flows). Those showing evidence for…
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A new technique to estimate the grain-size distribution (GSD) from a digital image of sediment is proposed, advancing the applicability of a suite of sedimentary `look-up-catalogue' approaches originated by Rubin Rubin, D.M., 2004. A simple…
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The Lower Cretaceous Britannia Formation (North Sea) includes an assemblage of sandstone beds interpreted here to be the deposits of turbidity currents, debris flows and a spectrum of intermediate flow types termed slurry flows. The term 'slurry…
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Genetic facies analysis based on bed-by-bed correlations from sheet-like lobes to the basin plain in some Hecho turbidite systems demonstrates that at least 50% of the flows building the sheet-like lobes kept moving downcurrent to the closely…
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The possibility of a reduced Atlantic thermohaline circulation in response to increases in greenhouse-gas concentrations has been demonstrated in a number of simulations with general circulation models of the coupled ocean-atmosphere system. But it…
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We show that robust regressions can be established between relative sea-level (RSL) data and benthic foraminifera oxygen isotopic ratios from the North Atlantic and Equatorial Pacific Ocean over the last climatic cycle. We then apply these…
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Rivers are largely responsible for shaping the Earth's continental landscapes. River patterns, the spatial arrangements of channels in the landscape, are determined by slope and structure. At site and sector scale, channel morphology varies…
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Sequence stratigraphy is widely embraced as a new method of stratigraphic analysis by both academic and industry practitioners. This new method has considerably improved our insight into how sedimentary basins accumulate and preserve sediments, and…
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Existing methods of facies analysis for fluvial deposits rely extensively on vertical profile analysis and comparisons with a limited array of fixed end member facies models. However, vertical profiles are not sufficiently diagnostic for this…
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Floodplains are formed by a complex interaction of fluvial processes but their character and evolution is essentially the product of stream power and sediment character. The relation between a stream's ability to entrain and transport sediment and…
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The aim of this study was to review the patients with lumbar epidural abscess in terms of neurological morbidity, therapeutic outcome, and prognosis, while assessing the usefulness of a new MRI staging classification and specific imaging findings as…
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Transgressive deposits accumulate with rising relative sea level during the landward migration of a coastline. Particularly at short time scales (e.g., 4th- to 6th-order cycles), transgressive deposits can be recognised through the evidence of a…
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Analyses of 3-D seismic data in predominantly basin-floor settings offshore Indonesia, Nigeria, and the Gulf of Mexico, reveal the extensive presence of gravity-flow depositional elements. Five key elements were observed: (1) turbidity-flow leveed…
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Ph.D. StudentCouncil for Geoscience -
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Researcher (at a non-Academic Institution)Geological Survey of Canada