Download Free 3d Seismic Geomorphology And Seismic Stratigraphy Of Late Quaternary Shelf And Shelf Margin Depositional Systems Northern Gulf Of Mexico Book in PDF and EPUB Free Download. You can read online 3d Seismic Geomorphology And Seismic Stratigraphy Of Late Quaternary Shelf And Shelf Margin Depositional Systems Northern Gulf Of Mexico and write the review.

Optimal exploitation of deltaic reservoirs needs detailed facies and architectural element analysis as a base for a comprehensive geological model. To date, very few studies have evaluated regional shelf-margin deltaic systems using 3D seismic data and 3D seismic geomorphologic and seismic stratigraphic analysis. High-resolution 3D seismic data, covering an area of 8,000 km2 offshore Louisiana at the modern shelf edge of the central northern Gulf of Mexico, was used to reconstruct the distribution and evolution of the paleo-Mississippi shelf-margin deltaic system during the last full cycle of fall and rise in sea level, which spans the last 125,000 years. Three-dimensional seismic geomorphological analysis was complemented with computed seismic attributes, including coherence, curvature, spectral components, sweetness, and amplitude gradient, with the objective of identifying shelf-margin geological features not typically observed in seismic profiles. The results show that salt tectonism in the Gulf of Mexico controlled the morphology of the shelf and the slope, forcing the paleo-Mississippi deltaic system to split, and concentrate its progradation and deposition in four separate along-strike salt-withdrawal minibasins. Each minibasin shows different deltaic constructional patterns. Progradation and aggradation patterns vary from minibasin to minibasin due to the response of the sediment supplied by the paleo-Mississippi delta, variations on sea level, the morphology of the seafloor, the arrival angle when the delta reaches the upper slope minibasin, and the shape of the minibasin. The 3D reconstruction of the system shows lateral variation of the deltaic processes from wave- to fluvial-dominated; wave-dominated deltaic strandplains were identified in the western minibasins and fluvial distributary channels were recognized in the eastern minibasins. This research highlights the importance of lowstand wave-dominated deltaic strandplains as important elements for the transport of sediment from the shelf to the slope in a salt-controlled setting like the Gulf of Mexico. The fluvial dominated shelf-margin delta is also related to direct transfer of sediment from the shelf to the slope
This study aims to establish a depositional framework for an area of the Louisiana shelf, north-central Gulf of Mexico. The depositional history of the study area is poorly understood, especially within the last cycle of major eustatic fluctuation (18,000 yrs BP -- present). Data sets used in this study include pre-existing and previously unanalyzed two-dimensional, high-resolution seismic profile records (Acadiana 86 and Acadiana 89), geotechnical foundation boring data (Coleman and Roberts, 1988a), and an industry lease block survey report (Cole, 1983). Seismic sequence stratigraphic methods are employed in this study to analyze seismic profile data. Seismic sequence analysis results indicate the presence of five unconformable surfaces and five seismic facies units. Through correlation of seismic profile data with lithologic and chronologic data, it is possible to conclude that these seismic facies units represent shelf-margin deltaic deposition during the last lowstand of sea level (18,000 yrs BP), sourced by the Pearl River.
We are poised to embark on a new era of discovery in the study of geomorphology. The discipline has a long and illustrious history, but in recent years an entirely new way of studying landscapes and seascapes has been developed. It involves the use of 3D seismic data. Just as CAT scans allow medical staff to view our anatomy in 3D, seismic data now allows Earth scientists to do what the early geomorphologists could only dream of - view tens and hundreds of square kilometres of the Earth's subsurface in 3D and therefore see for the first time how landscapes have evolved through time. This volume demonstrates how Earth scientists are starting to use this relatively new tool to study the dynamic evolution of a range of sedimentary environments.
Regional Geology and Tectonics: Principles of Geologic Analysis, 2nd edition is the first in a three-volume series covering Phanerozoic regional geology and tectonics. The new edition provides updates to the first edition's detailed overview of geologic processes, and includes new sections on plate tectonics, petroleum systems, and new methods of geological analysis. This book provides both professionals and students with the basic principles necessary to grasp the conceptual approaches to hydrocarbon exploration in a wide variety of geological settings globally. - Discusses in detail the principles of regional geological analysis and the main geological and geophysical tools - Captures and identifies the tectonics of the world in detail, through a series of unique geographic maps, allowing quick access to exact tectonic locations - Serves as the ideal introductory overview and complementary reference to the core concepts of regional geology and tectonics offered in volumes 2 and 3 in the series
Thèse. Biologie. Médecine. 1994
Expert petroleum geologists David Roberts and Albert Bally bring you Regional Geology and Tectonics: Principles of Geologic Analysis, volume one in a three-volume series covering Phanerozoic regional geology and tectonics. It has been written to provide you with a detailed overview of geologic rift systems, passive margins, and cratonic basins, it features the basic principles necessary to grasping the conceptual approaches to hydrocarbon exploration in a broad range of geological settings globally. - Named a 2013 Outstanding Academic Title by the American Library Association's Choice publication - A "how-to" regional geology primer that provides a detailed overview of tectonics, rift systems, passive margins, and cratonic basins - The principles of regional geological analysis and the main geological and geophysical tools are discussed in detail. - The tectonics of the world are captured and identified in detail through a series of unique geographic maps, allowing quick access to exact tectonic locations. - Serves as the ideal introductory overview and complementary reference to the core concepts of regional geology and tectonics offered in volumes two and three in the series.
Historically, submarine-mass failures or mass-transport deposits have been a focus of increasingly intense investigation by academic institutions particularly during the last decade, though they received much less attention by geoscientists in the energy industry. With recent interest in expanding petroleum exploration and production into deeper water-depths globally and more widespread availability of high-quality data sets, mass-transport deposits are now recognized as a major component of most deep-water settings. This recognition has lead to the realization that many aspects of these deposits are still unknown or poorly understood. This volume contains twenty-three papers that address a number of topics critical to further understanding mass-transport deposits. These topics include general overviews of these deposits, depositional settings on the seafloor and in the near-subsurface interval, geohazard concerns, descriptive outcrops, integrated outcrop and seismic data/seismic forward modeling, petroleum reservoirs, and case studies on several associated topics. This volume will appeal to a broad cross section of geoscientists and geotechnical engineers, who are interested in this rapidly expanding field. The selection of papers in this volume reflects a growing trend towards a more diverse blend of disciplines and topics, covered in the study of mass-transport deposits.