Download or read book Delineating and Quantifying Depositional Facies Patterns of Modern Carbonate Sand Deposits on Great Bahama Bank written by Paul Mitchell Harris and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The last decade has witnessed significant advances in analytic techniques and methodologic approaches to understanding earth history. This publication is a well-constructed geochronologic framework that allows estimation of rates of geologic processes, correlation of stratigraphies, and placement of discrete events in temporal order. Resulting from a research symposium at the 67th Annual SEPM meeting in New Orleans, Louisiana, April 1993, the 16 papers of this volume represent a broad spectrum of approaches to understanding earth history and the passage of geologic time.
Download or read book Delineating and Quantifying Depositional Facies Patterns of Modern Carbonate Sand Deposits on Great Bahama Bank written by Paul Mitchell Harris and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Delineating and Quantifying Depositional Facies Patterns. Processed satellite images, derived bathymetry (Digital Elevation Models), and sand body interpretation maps of three key areas of modern carbonate sand deposition on Great Bahama Bank (GBB) are organized into a GIS to develop morphometric data. The results of the sand body and sandbar interrogation imply that certain architectural properties of high-energy sand deposits are generic. We think such results broaden our perspective of the types of information that can be derived from studies of the modern and hopefully will stimulate further studies. Collectively, the sand deposits show a range of depositional facies patterns. Rimming the southern end of Tongue of the Ocean (TOTO) is the broadest expanse of "high-energy" sands found in the Bahamas characterized by narrow sandbars separated by wide, deep channels and a lack of islands. A variation of the tidal bar motif with broader and more irregular sandbars, relatively narrow channels, and few small islands occurs at the northern end of Exuma Sound (Schooners). Sands associated with tidal channels and the numerous islands of the Exumas chain along the western edge of Exuma Sound occur primarily as flood tidal deltas.
Download or read book Satellite Imagery Visualization and Geological Interpretation of the Exumas Great Bahama Bank written by Paul Mitchell Harris and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Exuma Islands and surrounding carbonate sand bodies of Great Bahama Bank are an important training venue, an area of interest to researchers of modern carbonates, and a valuable modern analog for understanding carbonate sand bodies in the subsurface. We hope to promote this interest by making readily available a set of processed satellite images, offshore/onshore digital elevation model (DEM), and interpretation maps organized into a GIS, along with examples of how this data can be visualized and used for geological interpretation. The clearest satellite images of the Exumas 1972 to 2005 were acquired and processed. Image processing was undertaken to maximize apparent water penetration and delineate submerged features. The primary images are 28.5-m Landsat TM, 15-m ASTER, and 0.6 m Quickbird. The processed scenes were georeferenced to a base image in GIS, creating a stack of co-registered images that can be effectively used for change detection. Masks were created for water and land to enable integration of different images and maps. A digital bathymetric map was created from water depths estimated from the spectral characteristics of a Landsat TM image. This offshore depth map was integrated with an onshore DEM derived from NASA Space Shuttle elevation data (SRTM) for the islands. The overall distribution of carbonate sands, i.e., total sand body, was interpreted primarily with the offshore DEM and satellite imagery. By selecting different water depth intervals, different portions of the total sand body were highlighted for visual analysis and extracted for morphometric measurements. A water depth interval termed the "shallowest sands" (0-1.8 m water depth) revealed geologically reasonable patterns of deposition and accounted for 37% of the total sand body in the subarea studied. Forty-eight out of the 617 shallowest sand bodies have areas larger than 100,000 m2. An evaluation of the shape of these shallow sand bodies using the Form Factor shape parameter of Russ (1999) suggests larger sand bodies are relatively more irregular compared with smaller sand bodies. The total sand body was also divided into flood tidal delta lobes, ebb tidal delta lobes, and sand flats/island-attached sands - flood tidal delta lobes comprise 85% of the total sand body. The average distance from any portion of the flood tidal delta to the channel opening along an ebb-flood dividing line was 2.7 km ± 1.5 km (with a range from 0 to 7.3 km). Fifty-two active tidal channels, either terminating within the tidal delta lobes or open to the east toward the open ocean, were interpreted from the Landsat image and offshore DEM. Channel lengths average 2.9 km and range between ~ 0.5 and 8.2 km, whereas their depth averages 5.4 ± 2.7 m and ranges from 0 to 13 m. Sediment was deposited in the flood delta lobes up to ~ 4400 m from the tidal channels and averages 900 m ± 650 m from them. Interpreting Pleistocene and Holocene ridges from enhanced satellite imagery of one key island (Hawksbill Cay) indicated 38% of the island is Pleistocene at the surface, and the Holocene ridges were deposited around the Pleistocene topography in a complex fashion. Integrating elevations with the interpretation map indicated that Holocene ridges have elevations from near sea level to 12 m (mean elevation of 7.7 ± 2.5 m) while Pleistocene landforms have elevations from near sea level to 19 m (mean elevation of 9.3 ± 3 m). Spectral classification of a key island (Shroud Cay) dominated by tidal flats reveals a consistent pattern of depositional environments related to subtle elevation differences. Changes between 1967 and 2005 in channels and emergent sand bars/beaches between Shroud Cay and Hawksbill Cay show the area was relatively stable throughout the 40-year period, but one portion showed a significant increase of emergent sand bars/beaches. Our application of spatial analysis techniques to the Exumas and its carbonate sand bodies provides new insights into this modern carbonate setting and potentially provides data that can have value as an analog in reservoir characterization and modeling. To increase accessibility, improve learning, and promote spatially accurate feedback, the stack of images, color-coded DEM, and geologic maps were exported out of GIS into easier and more flexible viewing programs such as GeoPDFs, GoogleEarth, and Animations.
Download or read book Sedimentary Petrology written by Maurice E. Tucker and published by John Wiley & Sons. This book was released on 2023-03-07 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authoritative, accessible, and updated introduction to sedimentary rocks for undergraduate students Sedimentary Petrology provides readers with a concise account of sedimentary rock composition, mineralogy, texture, structure, diagenesis, and depositional environments. The new edition of this classic text incorporates the many technological and analytical advances of the last decade, revealing exciting details of processes such as microbial precipitation, how microporosity is created within mudrocks, and the chemical composition of foraminifera deposits, which can be a key indicator for changing seawater temperature. This fourth edition offers a comprehensive update and expansion of the previous editions with a new set of illustrations, new references, and further reading. The new co-author Stuart Jones has brought his considerable expertise in clastic sedimentology to the rewritten chapters on sandstones and mudrocks. The addition of color images throughout the text will aid students immensely in their studies and petrographic fieldwork. Sample topics covered in Sedimentary Petrology include: Advances in modeling and programming to simulate depositional-diagenetic conditions and controls which support field-lab descriptions and interpretations Ocean acidification and the demise of coral reefs, and the role of the oceans in carbon capture and storage Sedimentary ironstones and iron-formations, sedimentary phosphate deposits, coal, oil shale and petroleum, and cherts and siliceous sediments Limestones, evaporites, volcaniclastic sediments, sandstones, conglomerates, breccias, and the effects of microplastics on marine organisms Aimed at undergraduates in geology and earth science, Sedimentary Petrology is an excellent teaching and learning resource for introductory courses in sedimentary rocks.
Download or read book Evaluating Water Depth Variation and Mapping Depositional Facies on Great Bahama Bank written by Paul M. (Mitch) Harris and published by . This book was released on 2014-04-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Great Bahama Bank (GBB) has long served as a frequently visited and well-studied example of a flat-topped, isolated carbonate platform. As such, GBB stands behind much of our understanding of modern processes and products of carbonate sedimentation. The geological models derived from studies on GBB are commonly used to illustrate depositional facies variations and frequently serve as reservoir analogs.We have used Landsat TM and ETM+ imagery and an extensive set of water depth measurements to first critically evaluate the magnitude and patterns of bathymetry across GBB. We then integrated the seafloor sample data of Reijmer et al (2009) along with a small number of additional samples with the Landsat imagery compiled into ArcGIS and analyzed with eCognition to develop a depositional facies map that is more robust than previous versions. The new maps, in our opinion, can serve as a template for better characterizing GBB at all scales, highlight future research areas where "ground-truthing" is needed to further investigate facies patterns, and facilitate better use of this isolated carbonate platform as an analog for both exploration- and reservoir-scale facies analysis. As examples of information that can be extracted from the maps, we analyze the platform margins of GBB with respect to their orientation, examine the relationship between water depth and facies type, interrogate facies position and breadth across the platform top, and relook at the occurences of whitings relative to the distribution of mud on the platform.The geospatial data for GBB are compiled into a 3.9 GB GIS database which is included on the DVD of this digital publication. The GIS contains raw data, interpretive products, and visualization examples that were produced during the development of the water depth and facies maps of GBB, including the Landsat TM imagery, DEM, images developed by combining layers in the GIS, and facies and whitings maps. In addition, the Projects folder of the GIS contains files that automatically display images, maps, and DEMs with an appropriate symbology in ArcGIS version 10.1 (.mxd), ArcGIS Explorer version (Build) 1750 and 2500 (.nmf), and GlobalMapper version 14-1 (.wks).
Download or read book Evaluating Water depth Variation and Mapping Depositional Facies on Great Bahama Bank a flat topped Isolated Carbonate Platform written by Paul Mitchell Harris and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbonate Depositional Systems Assessing Dimensions and Controlling Parameters written by Hildegard Westphal and published by Springer Science & Business Media. This book was released on 2010-08-05 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbonate sediments are of increasing relevance for archives of past environmental conditions and for economical reasons in areas of geothermal energy and hydrocarbon reservoirs. Complex interaction of physical and chemical parameters with biological parameters determines the architecture and composition of carbonate sedimentary bodies. This book closes some of the still existing gaps in our understanding of the influence and interplay of physical, chemical, and biological parameters with carbonate sedimentation. An understanding of this interaction is not only required for reliable prediction of reservoir quality but also for a robust interpretation of environmental conditions in the past and the present. It is written by geologists for geologists in order to provide an easily accessible overview of the large amount of relevant information provided by the neighbouring sciences. The approach of the book is to document the modern depositional environments of three classical areas of carbonate deposition, each characteristic for a specific sedimentological setting (isolated platform, attached shelf, ramp) in order to assess both the range of physical, biological and chemical parameters and their sedimentary response. This book presents a comprehensive compilation based on data from published work and unpublished theses, and the integration of these data in order to extract previously undiscovered relationships between the discussed parameters and carbonate deposition.
Download or read book Subsurface Geology of a Prograding Carbonate Platform Margin Great Bahama Bank written by Robert N. Ginsburg and published by SEPM (Society for Sedimentary Geology). This book was released on 2001 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume will be of special interest to carbonate sedimentologists, geochemists, petroleum geologists, engineers, and seismologists. It addresses fundamental aspects of prograding carbonate platforms in a Neogene example from Great Bahama Bank. A remarkable seismic profile, which imaged the prograding margin, provided the seismic stratigraphic framework. Two continuouslycored and logged borings on the profile produced the ground truth for testing and characterizing processes: lithologies and ages of sequence boundaries; influence of sea level fluctuations on progradation, controls on impedance contrasts in carbonates; fluid flow through the submerged margin; log responses of different lithologies; and the origin, ages and depositional environments of the platform top and prograding clinothems. The new findings on diagenesis are of special interest, including complete mineral stabilization in seawater, early burial dolomitization related to sequence boundaries and how diagenesis controls sonic velocity and permeability.
Download or read book Carbonate depositional environments modern and ancient 1 Reefs zonation depositional facies and diagenesis written by John E. Warme and published by . This book was released on 1985 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sedimentation on the Modern Carbonate Tidal Flats of Northwest Andros Island Bahamas written by Lawrence A. Hardie and published by . This book was released on 1977 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Depositional and diagenetic history of pliocene pleistocene carbonates of northwestern Great Bahama Bank written by David Kent Beach and published by . This book was released on 1982 with total page 1202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbonate Depositional Systems Assessing Dimensions and Controlling Parameters written by Hildegard Westphal and published by Springer. This book was released on 2010-08-27 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbonate sediments are of increasing relevance for archives of past environmental conditions and for economical reasons in areas of geothermal energy and hydrocarbon reservoirs. Complex interaction of physical and chemical parameters with biological parameters determines the architecture and composition of carbonate sedimentary bodies. This book closes some of the still existing gaps in our understanding of the influence and interplay of physical, chemical, and biological parameters with carbonate sedimentation. An understanding of this interaction is not only required for reliable prediction of reservoir quality but also for a robust interpretation of environmental conditions in the past and the present. It is written by geologists for geologists in order to provide an easily accessible overview of the large amount of relevant information provided by the neighbouring sciences. The approach of the book is to document the modern depositional environments of three classical areas of carbonate deposition, each characteristic for a specific sedimentological setting (isolated platform, attached shelf, ramp) in order to assess both the range of physical, biological and chemical parameters and their sedimentary response. This book presents a comprehensive compilation based on data from published work and unpublished theses, and the integration of these data in order to extract previously undiscovered relationships between the discussed parameters and carbonate deposition.
Download or read book Platform Sediments Northwestern Great Bahama Bank written by Robert N. Ginsburg and published by . This book was released on 1990* with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Carbonate Depositional Environments written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subsurface Carbonate Depositional Models written by George B. Asquith and published by . This book was released on 1979 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book begins with an introduction to basic principles of model construction - the parameters of a model and how they are developed. Incorporated in the text is a review of carbonate rock classification. Chapters 3-6 develop six basic subsurface carbonate depositional models, using case histories as prototypes. The corresponding log responses are presented for each model. The book concludes with a discussion of the methods for determining carbonate rock rock types from various log responses and identifying carbonate depositional environments directly from logs.
Download or read book Seismic Stratigraphy of a Modern Carbonate Slope written by Mark H. Van Buren and published by . This book was released on 1984 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integration of Outcrop and Modern Analogs in Reservoir Modeling written by G. Michael Grammer and published by AAPG. This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
