142 results found
Alqahtani FA, Jackson CA-L, Johnson HD, et al., 2017, CONTROLS ON THE GEOMETRY AND EVOLUTION OF HUMID-TROPICAL FLUVIAL SYSTEMS: INSIGHTS FROM 3D SEISMIC GEOMORPHOLOGICAL ANALYSIS OF THE MALAY BASIN, SUNDA SHELF, SOUTHEAST ASIA, JOURNAL OF SEDIMENTARY RESEARCH, Vol: 87, Pages: 17-40, ISSN: 1527-1404
Claringbould JS, Bell RE, Jackson CA-L, et al., 2017, Pre-existing normal faults have limited control on the rift geometry of the northern North Sea, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 475, Pages: 190-206, ISSN: 0012-821X
Coleman AJ, Jackson CA-L, Duffy OB, 2017, Balancing sub- and supra-salt strain in salt-influenced rifts: Implications for extension estimates, JOURNAL OF STRUCTURAL GEOLOGY, Vol: 102, Pages: 208-225, ISSN: 0191-8141
Deng C, Fossen H, Gawthorpe RL, et al., 2017, Influence of fault reactivation during multiphase rifting: The Oseberg area, northern North Sea rift, MARINE AND PETROLEUM GEOLOGY, Vol: 86, Pages: 1252-1272, ISSN: 0264-8172
Duffy OB, Fernandez N, Hudec MR, et al., 2017, Lateral mobility of minibasins during shortening: Insights from the SE Precaspian Basin, Kazakhstan, JOURNAL OF STRUCTURAL GEOLOGY, Vol: 97, Pages: 257-276, ISSN: 0191-8141
Duffy OB, Nixon CW, Bell RE, et al., 2017, The topology of evolving rift fault networks: Single-phase vs multi-phase rifts, JOURNAL OF STRUCTURAL GEOLOGY, Vol: 96, Pages: 192-202, ISSN: 0191-8141
Elliott GM, Jackson CA-L, Gawthorpe RL, et al., 2017, Late syn-rift evolution of the Vingleia Fault Complex, Halten Terrace, offshore Mid-Norway; a test of rift basin tectono-stratigraphic models, BASIN RESEARCH, Vol: 29, Pages: 465-487, ISSN: 0950-091X
Fernandez N, Duffy OB, Hudec MR, et al., 2017, The origin of salt-encased sediment packages: Observations from the SE Precaspian Basin (Kazakhstan), JOURNAL OF STRUCTURAL GEOLOGY, Vol: 97, Pages: 237-256, ISSN: 0191-8141
Jackson, Rotevatn A, Tvedt BM, et al., 2017, The role of gravitational collapse in controlling the evolution of crestal faults systems (Espirito Santo Basin, SE Brazil) - Discussion, Journal of Structural Geology, Vol: 98, Pages: 95-97, ISSN: 0191-8141
Lewis MM, Jackson CA-L, Gawthorpe RL, 2017, Tectono-sedimentary development of early syn-rift deposits: the Abura Graben, Suez Rift, Egypt, BASIN RESEARCH, Vol: 29, Pages: 327-351, ISSN: 0950-091X
Magee C, Bastow ID, de Vries BVW, et al., 2017, Structure and dynamics of surface uplift induced by incremental sill emplacement, GEOLOGY, Vol: 45, Pages: 431-434, ISSN: 0091-7613
Magee C, Jackson CA-L, Hardman JP, et al., 2017, Decoding sill emplacement and forced fold growth in the Exmouth Sub-basin, offshore northwest Australia: Implications for hydrocarbon exploration, INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION, Vol: 5, Pages: SK11-SK22, ISSN: 2324-8858
Ortiz-Karpf A, Hodgson DM, Jackson CA-L, et al., 2017, INFLUENCE OF SEABED MORPHOLOGY AND SUBSTRATE COMPOSITION ON MASS-TRANSPORT FLOW PROCESSES AND PATHWAYS: INSIGHTS FROM THE MAGDALENA FAN, OFFSHORE COLOMBIA, JOURNAL OF SEDIMENTARY RESEARCH, Vol: 87, Pages: 189-209, ISSN: 1527-1404
Phillips TB, Magee C, Jackson CA-L, et al., 2017, Determining the 3D geometry of a dike swarm and its impact on later rift geometry using seismic reflection data, Geology, ISSN: 0091-7613
Dike swarm emplacement accommodates extension during rifting and large igneous province (LIP) formation, with ancient dike swarms serving to localize strain during later tectonic events. Deciphering three-dimensional (3-D) dike swarm geometry is critical to accurately calculating magma volumes and magma-assisted crustal extension, allowing syn-emplacement mantle and tectonic processes to be interrogated. It is also important for quantifying the influence of ancient dike swarms on post-emplacement faulting. However, the essentially 2-D nature of Earth's surface, combined with the difficulties in imaging subvertical dikes in seismic reflection data and the relatively low resolution of geophysical data in areas of active diking, means our understanding of dike swarm geometry at depth is limited. We examine an ~25-km-wide, >100-km-long, west-southwest–trending dike swarm imaged, due to post-emplacement rotation to shallower dips, in high-quality 2-D and 3-D seismic reflection data offshore southern Norway. Tuned reflection packages correspond to thin (<75 m thick), closely spaced dikes. These data provide a unique opportunity to image and map an ancient dike swarm at variable structural levels. Crosscutting relationships indicate emplacement occurred in the Late Carboniferous–Early Permian, and was linked to the formation of the ca. 300 Ma Skagerrak-centered LIP. Dike swarm width increases with depth, suggesting that magma volume and crustal extension calculations based on surface exposures are dependent on the level of erosion. During the Mesozoic, rift-related faults localized above and exploited mechanical anisotropies within the dike swarm. We demonstrate that seismic reflection data are a powerful tool in understanding dike swarm geometry and the control of dikes on subsequent faulting.
Ryan L, Magee C, Jackson CA-L, 2017, The kinematics of normal faults in the Ceduna Subbasin, offshore southern Australia: Implications for hydrocarbon trapping in a frontier basin, AAPG BULLETIN, Vol: 101, Pages: 321-341, ISSN: 0149-1423
Schofield N, Holford S, Millett J, et al., 2017, Regional magma plumbing and emplacement mechanisms of the Faroe-Shetland Sill Complex: implications for magma transport and petroleum systems within sedimentary basins, BASIN RESEARCH, Vol: 29, Pages: 41-63, ISSN: 0950-091X
Suleiman AA, Magee C, Jackson CA-L, et al., 2017, Igneous activity in the Bornu Basin, Onshore NE Nigeria; implications for opening of the South Atlantic, Journal of the Geological Society, Vol: 174, Pages: 667-678, ISSN: 0016-7649
The structure of igneous plumbing systems in circum-South Atlantic, intra-continental rift basins (e.g. the West and Central African Rift Systems) remains enigmatic owing to poor subsurface data coverage and quality. How magmatism in these basins related to the opening of the South Atlantic is thus poorly understood. We integrate 2D and 3D seismic reflection data (c. 27 600 km2), data from 23 boreholes, and field observations from the Bornu Basin and Upper Benue Trough, onshore NE Nigeria, to examine the timing and development of igneous bodies possibly related to opening of the South Atlantic. We identify numerous sills, which typically have saucer-shaped and en echelon morphologies, and extrusive volcanic cones. The igneous rocks are alkali basalts and dolerites. Seismic-stratigraphic relationships indicate that emplacement occurred in the Early Cretaceous (Albian to Cenomanian; c. 120 Ma), Late Cretaceous (Santonian to early Campanian; c. 83 Ma) and Cenozoic (Miocene; c. 22 Ma). Magmatism was broadly coeval with major plate boundary interactions, characterized by major azimuthal changes in fracture zones in the developing South Atlantic Ocean. The broad temporal correlation between intra-continental rift basin magmatism and plate boundary interactions suggests that periods of magma emplacement may have, in some way, been instigated by stress dissipation into intra-continental rift basins.
Turrini L, Jackson CA-L, Thompson P, 2017, Seal rock deformation by polygonal faulting, offshore Uruguay, MARINE AND PETROLEUM GEOLOGY, Vol: 86, Pages: 892-907, ISSN: 0264-8172
Wrona T, Jackson CA-L, Huuse M, et al., 2017, Silica diagenesis in Cenozoic mudstones of the North Viking Graben: physical properties and basin modelling, BASIN RESEARCH, Vol: 29, Pages: 556-575, ISSN: 0950-091X
Wrona T, Magee C, Jackson CA-L, et al., 2017, Kinematics of Polygonal Fault Systems: Observations from the Northern North Sea, FRONTIERS IN EARTH SCIENCE, Vol: 5, ISSN: 2296-6463
Wrona T, Taylor KG, Jackson CA-L, et al., 2017, Impact of silica diagenesis on the porosity of fine-grained strata: An analysis of Cenozoic mudstones from the North Sea, GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, Vol: 18, Pages: 1537-1549, ISSN: 1525-2027
de Quay GS, Roberts GG, Watson JS, et al., 2017, Incipient mantle plume evolution: Constraints from ancient landscapes buried beneath the North Sea, GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS, Vol: 18, Pages: 973-993, ISSN: 1525-2027
Al-Balushi AN, Neumaier M, Fraser AJ, et al., 2016, The impact of the Messinian salinity crisis on the petroleum system of the Eastern Mediterranean: a critical assessment using 2D petroleum system modelling, PETROLEUM GEOSCIENCE, Vol: 22, Pages: 357-379, ISSN: 1354-0793
Allen H, Jackson CA-L, Fraser AJ, 2016, Gravity-driven deformation of a youthful saline giant: the interplay between gliding and spreading in the Messinian basins of the Eastern Mediterranean, PETROLEUM GEOSCIENCE, Vol: 22, Pages: 340-356, ISSN: 1354-0793
Burberry CM, Jackson CA-L, Chandler SR, 2016, Seismic reflection imaging of karst in the Persian Gulf: Implications for the characterization of carbonate reservoirs, AAPG BULLETIN, Vol: 100, Pages: 1561-1584, ISSN: 0149-1423
Jackson CAL, Lewis MM, 2016, Structural style and evolution of a salt-influenced rift basin margin: the impact of variations in salt composition and the role of polyphase extension, Basin Research, Vol: 28, Pages: 81-102
Because salt can decouple sub- and supra-salt deformation, the structural style and evolution of salt-influenced rifts differs from those developed in megoscopically homogenous and brittle crust. Our understanding of the structural style and evolution of salt-influenced rifts comes from scaled physical models, or subsurface-based studies that have utilised moderate-quality 2D seismic reflection data. Relatively few studies have used high-quality 3D seismic reflection data, constrained by borehole data, to explicitly focus on the role that along-strike displacement variations on sub-salt fault systems, or changes in salt composition and thickness, play in controlling the four-dimensional evolution of supra-salt structural styles. In this study, we use 3D seismic reflection and borehole data from the Sele High Fault System (SHFS), offshore Norway to determine how rift-related relief controlled the thickness and lithology of an Upper Permian salt-bearing layer (Zechstein Supergroup), and how the associated variations in the mechanical properties of this unit influenced the degree of coupling between sub- and supra-salt deformation during subsequent extension. Seismic and borehole data indicate that the Zechstein Supergroup is thin, carbonate-dominated and immobile at the footwall apex, but thick, halite-dominated and relatively mobile in high accommodation areas, such as near the lateral fault tips and in the immediate hangingwall of the fault system. We infer that these variations reflect bathymetric changes related to either syn-depositional (i.e. Late Permian) growth of the SHFS or underfilled, fault scarp-related relief inherited from a preceding (i.e. Early Permian) rift phase. After a period of tectonic quiescence in the Early Triassic, regional extension during the Late Triassic triggered halokinesis and growth of a fault-parallel salt wall, which was followed by mild extension in the Jurassic and forced folding of Triassic overburden above the fault systems upp
The structure of upper crustal magma plumbing systems controls the distribution of volcanism and influences tectonic processes. However, delineating the structure and volume of plumbing systems is difficult because (1) active intrusion networks cannot be directly accessed; (2) field outcrops are commonly limited; and (3) geophysical data imaging the subsurface are restricted in areal extent and resolution. This has led to models involving the vertical transfer of magma via dikes, extending from a melt source to overlying reservoirs and eruption sites, being favored in the volcanic literature. However, while there is a wealth of evidence to support the occurrence of dike-dominated systems, we synthesize field- and seismic reflection–based observations and highlight that extensive lateral magma transport (as much as 4100 km) may occur within mafic sill complexes. Most of these mafic sill complexes occur in sedimentary basins (e.g., the Karoo Basin, South Africa), although some intrude crystalline continental crust (e.g., the Yilgarn craton, Australia), and consist of interconnected sills and inclined sheets. Sill complex emplacement is largely controlled by host-rock lithology and structure and the state of stress. We argue that plumbing systems need not be dominated by dikes and that magma can be transported within widespread sill complexes, promoting the development of volcanoes that do not overlie the melt source. However, the extent to which active volcanic systems and rifted margins are underlain by sill complexes remains poorly constrained, despite important implications for elucidating magmatic processes, melt volumes, and melt sources.
Mannie AS, Jackson CA-L, Hampson GJ, et al., 2016, Tectonic controls on the spatial distribution and stratigraphic architecture of a net-transgressive shallow-marine synrift succession in a salt-influenced rift basin: Middle to Upper Jurassic, Norwegian Central North Sea, JOURNAL OF THE GEOLOGICAL SOCIETY, Vol: 173, Pages: 901-915, ISSN: 0016-7649
Massart BYG, Jackson MD, Hampson GJ, et al., 2016, Effective flow properties of heterolithic, cross-bedded tidal sandstones: Part 1. Surface-based modeling, AAPG Bulletin, Vol: 100, Pages: 697-721, ISSN: 0149-1423
Tidal heterolithic sandstones are commonly characterized by millimeter- to centimeter-scale intercalations of mudstone and sandstone. Consequently, their effective flow properties are poorly predicted by (1) data that do not sample a representative volume or (2) models that fail to capture the complex three-dimensional architecture of sandstone and mudstone layers. We present a modeling approach in which surfaces are used to represent all geologic heterogeneities that control the spatial distribution of reservoir rock properties (surface-based modeling). The workflow uses template surfaces to represent heterogeneities classified by geometry instead of length scale. The topology of the template surfaces is described mathematically by a small number of geometric input parameters, and models are constructed stochastically. The methodology has been applied to generate generic, three-dimensional minimodels (9 m3 volume) of cross-bedded heterolithic sandstones representing trough and tabular cross-bedding with differing proportions of sandstone and mudstone, using conditioning data from two outcrop analogs from a tide-dominated deltaic deposit. The minimodels capture the cross-stratified architectures observed in outcrop and are suitable for flow simulation, allowing computation of effective permeability values for use in larger-scale models. We show that mudstone drapes in cross-bedded heterolithic sandstones significantly reduce effective permeability and also impart permeability anisotropy in the horizontal as well as vertical flow directions. The workflow can be used with subsurface data, supplemented by outcrop analog observations, to generate effective permeability values to be derived for use in larger-scale reservoir models. The methodology could be applied to the characterization and modeling of heterogeneities in other types of sandstone reservoirs.
Ortiz-Karpf A, Hodgson DM, Jackson CA-L, et al., 2016, Mass-transport complexes as markers of deep-water fold-and-thrust belt evolution: insights from the southern Magdalena fan, offshore Colombia, Basin Research, ISSN: 0950-091X
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