Download or read book Stratigraphic Architecture Depositional Processes and Reservoir Implications of the Basin Floor to Slope Transition Neoproterozoic Windermere Turbidite System Canada written by Lilian Leomer Navarro Ugueto and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep-water strata of the Neoproterozoic Kaza Group and Isaac Formation (Cariboo Group) in the southern Canadian Cordillera (B.C.) were deposited in a passive-margin basin during the break-up of supercontinent Rodinia. At the Castle Creek and Mount Quanstrom study areas, a remarkably continuous stratigraphic interval throughout these units preserves a record of basin-floor overlain by strata deposited in the lowermost part of the slope. Although similar stratal intervals have been described from ancient and modern deep-marine settings, they still remain poorly understood. Three main stratal units are recognized within the study areas. The lower unit consists of three channel-lobe systems formed in the basin floor to slope transition. Uniquely, siliciclastic-dominated strata here consist of a variety of small- and few large-scale scour elements, indicating transport bypass along the channel-lobe transition zone, in addition to detached or attached depositional lobes composed mostly of distributary channels, fine-grained deposits, and uncommon splays, and a rare slope leveed channel complex. The middle unit is a siliciclastic-dominated succession of stacked, km-scale mass-transport deposits (i.e. debrites and slides), which indicates the more frequent emplacement of increasingly larger mass failures on a prograding slope, and are overlain by fine-grained, splay deposits that are successively overlain by channel, ponded and fine-grained deposits. In contrast, the upper unit is a mixed siliciclastic-carbonate slope succession of the first Isaac carbonate, a regional marker horizon that comprises mostly carbonate-rich and siliciclastic-rich fine-grained strata intercalated with channel and gully complexes that are mostly filled with coarser-grained strata. Abrupt changes in facies trends, stratal stacking patterns and depositional styles throughout these units are largely linked to long-term changes in relative sea level and its control on sediment supply, namely sediment caliber, volume and mineralogy. Notably, in the upper unit, small-scale changes in sediment source and supply are related to shorter sea-level variations superimposed on the long-term eustatic change.

Download or read book Subaqueous Mass Movements and Their Consequences written by D.G. Lintern and published by Geological Society of London. This book was released on 2019-09-25 with total page 597 pages. Available in PDF, EPUB and Kindle. Book excerpt: The challenges facing submarine mass movement researchers and engineers are plentiful and exciting. This book follows several high-profile submarine landslide disasters that have reached the world’s attention over the past few years. For decades, researchers have been mapping the world’s mass movements. Their significant impacts on the Earth by distributing sediment on phenomenal scales is undeniable. Their importance in the origins of buried resources has long been understood. Their hazard potential ranges from damaging to apocalyptic, frequently damaging local infrastructure and sometimes devastating whole coastlines. Moving beyond mapping advances, the subaqueous mass movement scientists and practitioners are now also focussed on assessing the consequences of mass movements, and the measurement and modelling of events, hazard analysis and mitigation. Many state-of-the-art examples are provided in this book, which is produced under the auspices of the United Nations Educational, Scientific and Cultural Organisation Program S4SLIDE (Significance of Modern and Ancient Submarine Slope LandSLIDEs).

Download or read book Source or Sink Erosional and Depositional Signatures of Tectonic Activity in Deep Sea Sedimentary Systems written by Rob Butler and published by Frontiers Media SA. This book was released on 2022-11-10 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stratigraphic Architecture and Characterization of a Neoproterozoic Continental Slope System Windermere Supergroup East Central British Columbia Canada written by Simona Ruso and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: At the Castle Creek study area, exceptionally well exposed strata of the Isaac Formation (Neoproterozoic Windermere Supergroup) crop out over a strike length of 4 km. This ~ 1 km-thick succession of continental slope deposits consist of six channel complexes (ICC1-ICC6) composed of three main architectural elements: mass transport deposits (MTDs), channel, and overbank deposits. Together, these elements stack in a repeating and systematic pattern that illustrates periodic forcing on the system related to the combined effect of long- and short-term changes in relative sea level that controlled the development of the continental shelf, and ultimately, the make up of the sediment resedimented into the deep-marine system. Understanding these stacking patterns in ancient slope systems and the conditions under which they formed, is important for assessing regional and potentially global changes in ancient climate and eustasy.

Download or read book Revised Stratigraphic Framework for the Cutoff Formation and Implications for Deepwater Systems Modified by Large scale Inflections in Slope Angle Below the Shelf Break written by Greg Hurd and published by . This book was released on 2016 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: Near times of ocean anoxic events or the peaks of long-term transgressions, carbonate margins may be drowned below a backstepping platform, and preserved as a submarine edifice which demonstrates hundreds-of-meters of vertical relief above the basin floor and forms a large-scale inflection (LSI) in slope angle. This study uses outcrops in the Guadalupe Mountains Region of West Texas, a robust suite of subsurface data from the northern Delaware Basin, and previously published literature in order to illustrate how LSIs influence patterns of sediment dispersal and accumulation in carbonate systems. Outcrops of the Lower – Upper Permian Cutoff Formation reveal that processes of channelization, bypass, and slope failure associated with a drowned carbonate margin (LSI) contributed to a dramatic thickening of carbonate, shale, and sandstone strata in the basinward direction. Correlation of this unit to the equivalent shelf system reveals that bedrock channels incising the LSI served as conduits for turbidity currents throughout the transgression and much of the ensuing highstand of a 2-4 m.y. composite sequence (PCS9). In the latest highstand, an increase in the production of carbonate mud by the active shelf system contributed to the complete filling of bedrock channels and the accumulation of carbonate mud-dominated mass-transport deposits basinward of the LSI. Correlation of this shelf-to-slope framework to basinal strata of the Bone Spring and Avalon trends in the subsurface reveals a landward shift in the locus of deposition downdip of the LSI across the northern Delaware Basin which was concomitant with the transition to patterns of sediment dispersal dominated by mass-transport events. Strata associated with turbidite systems accumulate mainly near the center of the basin, and demonstrate basinward-stepping geometries along shallow slope gradients downdip of the LSI, while demonstrating aggradational geometries along steep slopes. Strata associated with mass-transport deposits accumulate near the LSI on both shallow and steep slopes. Previous studies in other basins have documented LSIs which exhibit dimensions and stratal patterns comparable to the relict platform margin in the Delaware Basin. Insights developed from this study can help to improve exploration activities in the Delaware Basin, and other basins with analogous deepwater systems.

Download or read book Sequence Stratigraphy and Depositional Systems of the Paleocene Andrew Formation in the Central North Sea written by Brian C. Reinsborough and published by . This book was released on 1993 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focuses on the main depocenter of the Andrew Formation in the Moray Firth Basin, located at the junction of the Central and Viking Grabens, in the central North Sea. The objectives of this report are to (1) define the sequence stratigraphic framework of the Andrew Formation, (2) describe and characterize the depositional systems associated to the Andrew slope to basin system, and (3) interpret the depositional processes that have dominated sediment emplacement. Specific facies association of the Andrew Formation are determined by the nature (point source or linear source) and caliber (volume, grain size, sand:mud) of sediment supply to the slope environment. Genetic interpretation of the Andrew Formation focuses on understanding depositional processes which dominated sediment emplacement. Seven depositional facies have been identified for the Andrew slope and basinal system; turbidite channel-fills, turbidite lobes, mounded turbidite lobes, sheet turbidites, debris flows and slumps, low density turbidites and hemipelagic drapes. Seven depositional processes collectively create the above mentioned Andrew depositional facies; turbidity currents, cohesive mud flows, sandy debris flows, muddy debris flows, slumping, low density turbidity currents and suspension settling. The Andrew Formation consists of upper and lower depositional units identified on seismic by bounding downlap terminations and on well logs by high-gamma marker beds. The lower Andrew displays three distinct sand-rich lobes, delineated by isopach and sand percent maps and log motif characteristics. Proximal, mounded, sand-rich units disperse into unchannelized sheet turbidites in the basin plain areas. The upper Andrew downlaps the lower unit, and a single, linear sediment source was centered in the Witch Ground Graben. The sediment dispersal pattern and internal facies character suggest the upper unit is a proximal slope-apron downlapping and filling inter-lobe bathymetric lows of the underlying unit. The lower Andrew is interpreted to be a structurally focused, sand-rich lobe complex, without associated incised canyons. The Andrew system evolved as the delta platform expanded onto the proximal fan, resulting in a linear sediment source spilling over the slope as a fringing slope-apron. The Andrew depositional system in the slope and basin environment is characterized by a high degree of facies disorganization composed of a wide array of gravity-flow deposits.

Download or read book Depositional Architecture and Evolution of Deep water Base of slope and Slope Channel Complexes in a Passive margin Setting written by Lilian L. Navarro Ugueto and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Architecture and Depositional History of a Neoproterozoic Deep water Slope Channel Complex in a Passive Margin Setting written by Martha Mussa-Caleca and published by . This book was released on 2008 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stratigraphic Architecture and Depositional History of Laterally accreted Channel Fills in the Lower Isaac Formation Windermere Supergroup British Columbia Canada written by Iain Dumouchel and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Continental slope channels, which serve as the primary conduits for sediment transport into the deep marine, occasionally become sites of sediment deposition with excellent reservoir potential. Increasingly reported in the literature are subsurface channel fills exhibiting shingled seismic reflectors that are interpreted to have formed by lateral channel migration. In lower Isaac Formation channels inclined strata are observed but at a lateral scale that is far below industry-seismic detection. Distinctively these flat-based channels are filled with coarse-grained sandstone that transitions abruptly and obliquely upwards into thin, fine grained turbidites. Like rivers, lateral accretion in Isaac channels is interpreted to be the result of the interaction of inertial and pressure forces, but in highly turbulent, highly density-stratified turbidity currents. This resulted in the formation of two superimposed secondary circulation cells that caused enhanced erosion on the outer bank and preferential deposition of coarse-grained sediment along the inner bank.

Download or read book Basin floor Channel Stacking and Evolution of the Brushy Canyon Formation in the Northeastern Delaware Basin written by Sarah Katherine Meyer and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deep-water depositional systems commonly show two end-member styles of stratigraphic architecture: laterally confined channelized deposits on the slope and more depositional, unconfined distributary channel-lobe deposits on the basin floor. In between, a transitional stratigraphic architecture comprising scours and short-lived, low-sinuosity channels can form. This transitional stratigraphic architecture has been most commonly recognized on the modern seafloor where the components of deep-water depositional systems can be studied in full plan-view display. Outcrops of the Permian Brushy Canyon Formation in the Delaware Basin show weakly confined channel deposits thought to be found in these transition zones. Brushy outcrops have been described as laterally migrating, sandy channel fills up to 500 m wide and 30 m thick deposited in areas of low to moderate gradient. Although outcrops provide high-resolution cross sections of the sedimentology and stacking of deep-water deposits, they lack the larger scale, three-dimensional context of seismic-reflection data and well logs used for basin-framework studies. Here, I integrate a large number of geophysical well logs (1,366) and 3D seismic-reflection data (~30 Hz dominant frequency) covering ~500 km2 in the northeastern Delaware Basin, southeastern New Mexico. I created a three-dimensional log-based stratigraphic model of the Brushy Canyon Formation and characterized the depositional architecture within the West Hobbs deep-water depositional system on the basin floor. Generally, the proximal Brushy Canyon Formation consists of lenticular sand bodies interstratified with sheet-like units, and the gamma-ray logs show local blocky, isolated relatively coarse-grained deposits bounded by thicker relatively fine-grained deposits. Downstream, there is a transition to more continuous, sheet-like deposits. I used a spectral decomposition seismic attribute to better visualize the 3D stratigraphic architecture of the system. This revealed a stratigraphic evolution from relatively few, wide isolated channel deposits in the lower Brushy to widespread, narrow channel deposits in the upper Brushy. Both channel architectures show low sinuosity and trend to the south and southwest. The low sinuosity of the channel deposits is interpreted to be a product of frequent channel avulsions. This caused the channels to be short-lived and immature, preventing enough sustained sediment-gravity flow activity to develop significant sinuosity. I interpreted the observed vertical change from isolated, short-lived, weakly confined channels to more numerous, relatively narrow channels, including distributary patterns organized into lobes as reflecting a backstepping of the depositional system. This backstepping stacking pattern has been previously recognized at multiple scales throughout the Brushy Canyon Formation. This is the first time that these patterns have been imaged in 3D seismic-reflection data, mapped in the subsurface, and checked against well log data

Download or read book Best Practices in Sequence Stratigraphy written by Peter Homewood and published by Editions TECHNIP. This book was released on 2000 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stratigraphic Architecture Depositional Systems and Reservoir Characteristics of the Pearsall Shale gas System Lower Cretaceous South Texas written by David Christopher Hull and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the regional stratigraphic architecture, depositional systems, and petrographic characteristics of the South Texas Pearsall shale-gas system currently developed in the Indio Tanks (Pearsall) and Pena Creek (Pearsall) fields. The Pearsall Formation was deposited as a mixed carbonate-siliciclastic system on a distally steepened ramp over a period of 11.75 million years. It was deposited between maximum floods of two second-order sequences and contains at least five third-order cycles. Up to three Oceanic Anoxic Events (OAE 1-A, Late Aptian Regional Event, and OAE 1-B) figure prominently in the deposition of the Pearsall sediments, and during these intervals, depending on the location within the Maverick Basin, sedimentation rates were between 0.5 and 2 cm/ky. Facies in the Pearsall section arise from interactions between pre-existing topography, oxygenation regime, eustatic sea-level fluctuation, and depositional processes. In the Pearsall Formation, OAEs affected depositional environments and resulting facies patterns during several time periods. The OAEs occurred in association with transgressions but not necessarily in concert with them. Outer ramp OAE facies are siliciclastic-dominated, TOC-rich, and little-bioturbated. Conversely the outer ramp facies deposited under normally oxygenated paleoenvironmental conditions tend to be carbonate-rich, TOC-poor, and are more prominently bioturbated.

Download or read book Coarse grained Deep Water Slope Basin floor Systems written by René Ravi Winter and published by . This book was released on 2018 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Internal and external architecture of a series of coarse-grained, deepwater deposits have been investigated and the role of intra- and extra-basinal tectonic forces on the sedimentary record has been highlighted within a source-to-sink context. Six hundred (600) meters of coarse-grained sediment gravity flow deposits of a submarine fan were measured in the Jurassic Los Molles Formation in the southern Neuquén Basin, Argentina. This fan is encased in a thick (km scale), fine-grained, hydrocarbon source-prone unit and is characterized by well-sorted, thick-bedded turbidite deposits in the axial and proximal parts of the fan, which transitions to more poorly-sorted and heterolithic facies on the fan margin and downdip fringe. Measured thinning rates of ~7m/km suggest a fan that is ~15km long, smaller than other systems with similar slope dimensions. Bed thicknesses are consistent across the fan but much larger numbers exist in the axial locations, suggesting stratigraphic truncation and fan confinement, probably the result of a structured basin floor inherited from syn-tectonic processes. At the regional or basin scale, a combination of 3D seismic data, well log and core data were used to describe a relatively undocumented deepwater sedimentary system in the offshore Veracruz Basin, Mexico. Sandstone-prone Miocene channelized fairways are present in the basin, downdip from an active plate boundary zone and active foldbelts. Deposits are poorly-sorted and exhibit similar spatially-controlled facies associations as the Los Molles Formation, however the depositional system is much more extensive, facilitated by regional tectonic forces and uplift in the hinterland resulting in extremely high sedimentation rates to the basin. A large channel complex, initiated by tectonic uplift on the margin and an eastward migration of the depocenter, which parallel’s the migration of the deformation front in the hinterland, provide additional influence of tectonic forces on the resultant deepwater sedimentary systems.

Download or read book Stratigraphic Principles and Practices written by Robert J. Weimer and published by . This book was released on 1975 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Processes of Sedimentation Stratigraphic Architecture and Provenance of Deep water Depositional Systems written by Jonathan R. Rotzien and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation characterizes the processes of sedimentation, lithofacies, lithofacies associations, depositional architecture, depositional environments, provenance, and overall evolution of the Upper Miocene Upper Mount Messenger Formation, Taranaki Basin, New Zealand and Pliocene Repetto and Pico formations, Ventura Basin, California. First, the Upper Mount Messenger Formation represents a deep-water slope apron composed of at least five genetically-linked, north-trending, paired channel-levee elements and large-scale overbank avulsion cycles that systematically stack to the southwest. Second, the uniformly fine- to very fine-grained sandstone of the Upper Mount Messenger Formation is largely derived from low-grade metamorphic forearc sandstone and graywacke recycled from the Torlesse and Waipapa terranes. Third, the Repetto and Pico formations represent a type of braided system composed of lobe complexes that lack upslope channel-levee feeders that would necessitate the term 'frontal' lobe. These lobes spilled from canyon mouths lining the Ventura Basin margin and were redirected to flow westward along the basin axis. This type of deep-water system is analogous to how deposits form at the mouths of alluvial fans that feed terrestrial braided river valleys. In addition to the application of this dissertation to understanding the basic science surrounding processes of sedimentation from density flows and specific evolution of flows that deposited the sediment in these formations, models presented here can be used to predict sediment distribution patterns in other deep-water hydrocarbon basins lacking sufficient data.

Download or read book Principles of Sedimentary Basin Analysis written by Andrew D. Miall and published by Springer Science & Business Media. This book was released on 1990 with total page 696 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book incorporates developments in chronostratigraphy, sequence stratigraphy and sedimentation and tectonics that have taken place during the last decade. In particular, the wealth of case studies that have appeared since the late 1980s, focusing on sequence architecture and the relationships between sedimentation and tectonics, have required a virtually complete rewriting of Chapters 6 to 9. The global-eustasy model that was popular as a mechanism for sequence generation at the time of writing of the earlier editions of this book has been downplayed in this edition in the face of abundant new evidence pointing to the importance of tectonism as a process that may generate sequences over a wide range of temporal and physical scales. Amongst other additions, this edition contains new sections describing such topics as basin inversion and basement control of sedimentary basin development, and a range of new case studies of the plate tectonics of sedimentary basins.

Download or read book Effect of Growth Structures on Slope Channel Architecture and Facies with Respect to Reservoir Characterization Eocene Morillo Turbidite System south central Pyrenees Spain written by Jeremiah D. Moody and published by . This book was released on 2010 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: