Publications
63 results found
Wygrala BP, Neumaier M, Clayton C, et al., 2014, Sensitivity analysis of controlling factors in biogenically charged petroleum systems- A case study from the Levantine Basin
Fraser AJ, 2010, A regional overview of the exploration potential of the Middle East: A case study in the application of play fairway risk mapping techniques, Pages: 791-800, ISSN: 2047-9921
The Middle East is the world's most prolific petroleum province, containing the world's top five countries in terms of oil reserves and four of the top 10 oil producers. This success is largely due to the stacked nature of what are essentially very simple play systems with multiple carbonate platform and deltaic clastic reservoirs, widespread evaporitic seals, world class source rocks and the overprint of very large compressional anticlines in both fold belt and foreland settings. As with most working petroleum systems, all areas of the Middle East are not equally endowed with petroleum resources and future potential. Using an analysis of the prolific Upper Jurassic 'Arab' play fairway of the Middle East, the application of play fairway risk mapping techniques is demonstrated. © Petroleum Geology Conferences Ltd. Published by the Geological Society, London.
Maynard JR, Fraser AJ, Allen MB, et al., 2010, Russia, FSU and the circum-arctic: The final frontier, Pages: 589-590, ISSN: 2047-9921
Sixteen papers representing the petroleum geology of the Arctic, Russia and former Soviet Union were presented over the first day and a half of PGC VII. The region is huge, diverse and has generated a great deal of excitement and outside investment in the industry over the 20 years since the collapse of the Soviet Union. The Arctic region in particular has significance as perhaps the last great frontier hydrocarbon province on Earth. The region is large, approximately 5000 km across a polar view north of the Arctic Circle (Fig. 1). Importantly, from an oil and gas exploration perspective, the Arctic Ocean has the most extensive continental shelf area of any ocean basin (c. 50% of offshore area). Much of this sits in the broad Russian offshore Arctic in water depths of less than 50 m. There are numerous sedimentary basins in the Arctic, some well known, but most poorly understood. Art Grantz (United States Geological Survey) and colleagues estimated resources at 114 × 109 barrels of undiscovered oil and 2000 × 1012 standard cubic feet (SCF) of natural gas. If the estimates are correct, these hydrocarbons would account for more than a fifth of the world's undiscovered resources. This great prize, in a world of diminishing reserves, has recently brought territorial issues into focus between the five countries with claims in the Arctic Ocean (Russia, Norway, Denmark, Canada and the USA). All of this is taking place against a backdrop of increasing concern for the fragile Arctic environment. © Petroleum Geology Conferences Ltd. Published by the Geological Society, London.
Fraser SI, Fraser AJ, Lentini MR, 2010, Rifts renaissance: stretching the crust and extending exploration frontiers, PETROLEUM GEOSCIENCE, Vol: 16, Pages: 187-188, ISSN: 1354-0793
Sabato Ceraldi T, Ali HM, Green T, et al., 2010, Messinian facies and Oligo-miocene slumping in offshore sirt basin libya and sub-Messinian seismic imaging, Pages: 2649-2653
During the Messinian (6.3-5.6 Ma) the Gibraltar Straits temporarily closed as a result of the continued collision of Africa and Eurasia. The relict Mediterranean ocean basin quickly evaporated and the sea level fell dramatically. As a result an erosional and karst surface was formed which can be identified in both outcrops and seismic data in the Sirt basin. At the base of the slope, the erosional surface becomes a bright seismic event which marks the Messinian evaporate basin. Well data indicate that anhydrite and gypsum were deposited in a sabkha environment. The central part of the Sirt Basin became isolated between the karstified slope and the outer basin high. The interval is characterized by a seismic facies of laterally continuous bright events onlapping the erosional surface. This facies is interpreted as clastic deposits within a Late Messinian enclosed lake (Lake Sirt). There is a strong correlation between the seismic facies and seismic data quality. The areas with best data quality correspond to the mapped extent of Lake Sirt characterized by clastic sedimentation. The areas with the poorest data quality correspond to the parts of the basin with sabkha depositional environments and anhydrite, largely surrounding the lacustrine environments. © 2010, European Association of Geoscientists and Engineers.
Slack J, Bader A, Jones B, et al., 2009, Rertiary stratigraphy of the offshore sirt basin, Libya
The onshore Sirt Basin, Libya, is a prolific hydrocarbon basin, with reserves of approximately 50 billion barrels OE, however comparatively little exploration activity has occurred in the offshore extension of this rift basin. In advance of drilling deepwater exploration wells in the basin, this study has been undertaken to understand the Tertiary post-rift section. Regional seismic data was used to define 8 Tertiary sedimentary packages through the observation of stratal terminations and geometries that indicate a re-organisation of sedimentation. Biostratigraphy has been used to pick formation tops and tie these 8 seismically defined packages to eight offshore wells. This has allowed the development of a chronostratigraphy. During the Eocene there is a well developed carbonate margin however, at top Eocene there is a major change in sedimentation from carbonates to clastics, which subsequently infill the basin. This is coincident with a pulse of Syrian Arc inversion. This inversion appears to have continued through to the Early Oligocene and is postulated to have caused an initial phase of slumping. There is a dramatic second phase of slumping that is focussed on the NE basin margin and is likely to have a local tectonic cause. The Messinian event is represented as an erosional surface on the basin margins and lacustrine and evaporitic deposits in the basin centre. This is overlain by a very thin Plio-Pleistocene section.
Flesche H, Rutledal H, Fraser A, 2008, Evaluation of an IOR discovery at the Oseberg Field in the North Sea using rock physics and seismic data analysis, Pages: 1764-1768, ISSN: 1052-3812
A significant IOR discovery was made in the Gamma Main Statfjord (GMS) structure within the Oseberg field in the North Sea. Rock physics and analysis of seismic inversion data was used to reduce uncertainty and to aid planning of production and injection wells.
Fraser SI, Fraser AJ, Lentini MR, et al., 2007, Return to rifts - The next wave: Fresh insights into the petroleum geology of global rift basins, Petroleum Geoscience, Vol: 13, Pages: 99-104, ISSN: 1354-0793
Rift basin exploration has provided the oil and gas industry with almost one third of discovered global hydrocarbon resources. The maturity of prolific passive margin sequence plays has necessitated a shift in technical emphasis to understanding petroleum geology of the deeper precursor rift basin megasequences. Modelling of these petroleum systems relies extensively on theoretical stretching hypotheses for whole-crust evolution and heat flow prediction. Several alternatives have emerged to account for anomalous rift-related thermal stress, asymmetry of structural styles and origin of thick syn-rift 'sag-basin' subsidence patterns at passive continental margins. These observations cannot be predicted by the pure shear uniform stretching model first introduced by McKenzie in 1978. Newly acquired, 2D long cable deep seismic records provide empirical evidence that supports more complex, polyphase, depth-dependent stretching origins for rift-basin formation. Heterogeneities are believed to be inherent in the brittle upper crust, in the ductile lower crust and lithospheric mantle and so result in the complex distribution of accommodation space recorded by syn-rift megasequence deposition during episodes of orthogonal or oblique extension. No single stretching model uniquely describes the varied structural response of the anisotropic crust to plate-scale extension. A hybrid of phased simple and pure shear deformation mechanisms separated by regional lateral, and possibly vertical crustal discontinuities, may explain the apparent paradox of along-strike co-existence of uniform versus, depth-dependent stretching structural geometries. © 2007 EAGE/Geological Society of London.
Fraser AJ, Goff J, Jones R, et al., 2007, A regional overview of the expiration potential of the Middle East, Pages: 670-677
Regional analysis of the Middle East based on BP's extensive experience in the region going back over 100 years. Assessment of future exploration potential of the region based on play fairway analysis.
Fraser AJ, Hilkewich D, Syms R, et al., 2005, Angola Block 18: A deep-water exploration success story, Pages: 1199-1216, ISSN: 2047-9921
Offshore Angola Block 18 was awarded to Amoco in October 1996 for an initial four-year exploration period with an associated four well commitment. This was subsequently extended in October 2000 for an additional three years and further two well commitment. Ownership is BP (operator) 50% and Shell 50%. The block covers an area of 4880 km2, the equivalent of some 35 UKCS blocks. Water depths range from 200min the east to over 1600min the west. Block 18 is almost entirely covered by over 5000 km2 of high quality 3Dseismic data. Exploration activity has, to date, focused on the western part of the block lying in 1200-1600mof water on the southward extension of the successful Tertiary play from Blocks 15 and 17. Reservoir targets occur in Miocene and Oligocene submarine slope channel sands associated with the evolving Congo River cone. Charge is derived from Upper Cretaceous-Tertiary marine shales of the Iabe Formation. Dominant trap styles are combined structural and stratigraphic domes and turtles associated with movement of Aptian salt. Since the BP-Amoco merger in January 1999, six exploration wells have been drilled to fulfil the first and second phase exploration commitments (Platina, Plutonio, Galio, Paladio, Cobalto & Cromio) all of which have been significant oil discoveries in turbidite channel and sheet sands of Miocene and Oligocene age. Given an unprecedented six discoveries out of six wells, it is clear that the working Tertiary fairway in Block 17 extends south into Block 18. Keys to success have been rapid integration of BP's Block 15 and 17 experience with existing Amoco interpretation and technologies in Block 18. The learnings from the successful exploration campaign in Block 18 Angola, specifically in the use of high quality 3Dseismic attributes as a risk reduction tool, have application in deep-water plays elsewhere, such as the Tertiary and Upper Cretaceous of the North Sea and offshore mid Norway. © 2005 Petroleum Geology Conferences Ltd.
Hurst A, Fraser AJ, Fraser SI, et al., 2005, Deep-water clastic reservoirs: A leading global play in terms of reserve replacement and technological challenges, Pages: 1111-1120, ISSN: 2047-9921
Experience from the exploration for, and development of, deep-water clastic reservoirs offshore NW Europe has provided an important testing ground for new technology and has subsequently been applied globally. In NW Europe, Upper Jurassic, Lower Cretaceous and Paleogene intervals have proven play fairways, all of which retain exploration potential. Ancient, particularly Tertiary, passive margins are identified as the main areas of current global deep-water exploration interest; a review of play characteristics is given. Innovative geophysical data and data analysis play an important role in deep-water clastic reservoir geology. The roles of AVO and seismic inversion are emphasized in the context of direct hydrocarbon indication and reservoir delineation. In areas of modern deep water, when drilling for ancient deep-water clastic targets, the importance of acquiring the right data at the right time is critical to creating robust predictive models. © 2005 Petroleum Geology Conferences Ltd.
Fraser AJ, Gawthorpe RL, 2003, Chapter 2: Regional Structural Framework, Geological Society Memoir, Vol: 28, Pages: 5-11, ISSN: 0435-4052
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Fraser AJ, Gawthorpe RL, 2003, Chapter 6: Summary, Geological Society Memoir, Vol: 28, Pages: 71-72, ISSN: 0435-4052
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Fraser AJ, Gawthorpe RL, 2003, Chapter 5: Play Fairway Analysis, Geological Society Memoir, Vol: 28, Pages: 51-69, ISSN: 0435-4052
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Fraser AJ, Gawthorpe RL, 2003, Chapter 3: Carboniferous Basin Development, Geological Society Memoir, Vol: 28, Pages: 13-26, ISSN: 0435-4052
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Fraser AJ, Gawthorpe RL, 2003, Chapter 4: Palaeogeography and Facies Evolution, Geological Society Memoir, Vol: 28, Pages: 27-49, ISSN: 0435-4052
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Fraser AJ, Gawthorpe RL, 2003, Chapter I: Introduction, Geological Society Memoir, Vol: 28, Pages: 1-4, ISSN: 0435-4052
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Hawkes PW, Fraser AJ, Einchcomb CCG, 1998, The tectono-stratigraphic development and exploration history of the Weald and Wessex basins, Southern England, UK, Geological Society Special Publication, Vol: 133, Pages: 39-66, ISSN: 0305-8719
This paper is part of the special publication Development, evolution and petroleum geology of the Wessex Basin (ed J.R. Underhill). Exploration drilling for hydrocarbons in southern England commenced over 50 years ago prompted by numerous seepages along the Dorset coast and gas shows in water boreholes. The two main depocentres, the Weald and Wessex basins, exhibit many similarities in both tectonic and stratigraphic evolution through Early Triassic-Tertiary times, reflecting the regional influences of Atlantic Margin rift-subsidence processes and subsequent Tertiary (Alpine) inversion tectonics. Given these similarities, the development of the hydrocarbon play system in both these areas can be compared using a common tectono- stratigraphic framework which has been identified and calibrated using well and seismic data. In detail, facies variability recognized within individual depositional units highlights differences in both source and reservoir distribution between the Weald and Wessex areas, which have in turn exerted fundamental controls on the hydrocarbon prospectivity of the two basins. These differences are influenced by the position of major basin-bounding fault systems and by the changing importance of the Cornubian-Armorican and the London-Brabant Massifs as clastic provenance areas through time. Sequence isopachs illustrate the same discrete episodes of rift-related subsidence in both areas. These rifting episodes led to the development of extensional trapping geometries particularly during Late Jurassic-Early Cretaceous times. Subsequent Late Cretaceous thermal subsidence led to the formation of mature source kitchen areas focused within the hanging walls of the earlier extensional faults. Hydrocarbon expulsion from the source kitchen areas ceased during Tertiary uplift and subsequent cooling. Inversion movements on the old extensional faults led to the development of hanging wall anticlines which rely upon remigration mechanisms, including exsolution of
Fraser AJ, Matthews SJ, Murphy RW, 1997, Petroleum geology of Southeast Asia, Geological Society Special Publication, Vol: 126, ISSN: 0305-8719
This volume (special publication No. 126) gives rapid access to key aspects of the petroleum geology of SE Asia, including economic background, plate tectonic models, petroleum charging and reservoir systems, as well as detailed field and reservoir studies. It provides substantial new data and interpretations on the oil and gas exploration of the region.
Matthews SJ, Fraser AJ, Lowe S, et al., 1997, Structure, stratigraphy and petroleum geology of the SE Nam Con Son Basin, offshore Vietnam, Geological Society Special Publication, Vol: 126, Pages: 89-106, ISSN: 0305-8719
This paper is part of the special publication Petroleum geology of Southeast Asia (eds A.J. Fraser, S.J. Matthews and R.W. Murphy). New well and seismic data acquired during recent exploration of the SE Nam Con Son Basin, offshore Vietnam, have been evaluated to assess the tectonostratigraphic evolution. The offshore Vietnamese region has evolved in response to the complex relative motions of Indochina, Peninsular Malaysia, Borneo and the East Vietnma/South China Sea during the Cenozoic. On a regional scale these motions have been accommodated by strike-slip fault development, crustal extension and contraction. Rift pulses occurred in the SE Nam Con Son Basin from the Palaeogene to the earliest Late Miocene in response to the interaction of East Vietnam/South China Set rift propagation and regional transtensional shear to the west of the evolving ocean basin. The structural evolution was complicated by mild contractional deformation during the Middle Miocene which was broadly synchronous with development of the largest inversion structures in the nearby West Natuna Basin. The oldest dated Tertiary rocks in the SE Nam Con Son Basin are fluvio-deltaic sediments of Late Oligocene age which have been penetrated by several wells. Early to Mid-Miocene depositional environments ranged from non-marine to outer shelf, with a predominantly clastic basin-fill. The thickest Lower to Middle Miocene occurs in N-S- to NE-SW-trending half grabens. A regionally recognized truncational unconformity of late Mid-Miocene age has resulted partly from the combined effects of the mild inversion and by the erosion of uplifted footwalls. During the Late Miocene there was rapid and widespread deepening of depositioinal environments, synchronous with net-extensional fault reactivation on many previously developed rift structures. The stratigraphic response to this increased bathymetry was the growth of isolated carbonate build-ups on pre-existing structural highs, progradation of the palaeo- M
Corfield SM, Gawthorpe RL, Gage M, et al., 1996, Inversion tectonics of the Variscan foreland of the British Isles, Journal of the Geological Society, Vol: 153, Pages: 17-32, ISSN: 0016-7649
Late Westphalian inversion structures on the Variscan foreland display wide variations in orientation that are the product of the underlying basement grain. The orientation of the major basement lineaments in relation to the direction of maximum shortening also determined the severity of deformation of the inverted basins. NE-SW-trending faults were oriented roughly perpendicular to the NW-SE to NNW-SSE direction of maximum shortening determined from thrust transport directions in the Variscan orogen to the south. As a consequence, NE-SW-trending basins in the Variscan foreland have been strongly inverted, the Silesian post-rift fill has commonly been expelled from the basins and the syn-rift sediments have been deformed by chevron folds (Dublin and Bowland Basins). In contrast, the N-S- and NW-SE-trending faults were oriented more obliquely to the direction of maximum shortening and, as a consequence, display a significant component of oblique slip. This oblique slip component is manifested as en-echelon periclines and flower structures. In general, the N-S- and NW-SE-trending basins were less strongly inverted and the Silesian post-rift fill has been retained.
Glennie KW, Fraser AJ, 1995, MEETINGS REPORTS, Pages: 355-358, ISSN: 0141-6421
Gawthorpe RL, Fraser AJ, Collier REL, 1994, Sequence stratigraphy in active extensional basins: implications for the interpretation of ancient basin-fills, Marine and Petroleum Geology, Vol: 11, Pages: 642-658, ISSN: 0264-8172
Systematic variations in sequences, their component units and their stacking patterns exist within rift basins. These variations can be related to displacement gradients associated with the large-scale (12-50 km) segmentation of normal fault zones, which control accommodation, sediment supply and basin physiography. Sediment supply is also strongly influenced by the nature of pre-rift drainage networks and variations in bedrock lithology. High rates of hangingwall subsidence close to the centre of normal fault segments may cancel out the effects of glacio-eustatic sea-level fall, so that accommodation development is normally characterized by the continual addition of new space. The resulting sequences lack type 1 sequence boundaries and lowstand systems tracts, and stack into aggradational sequence sets. The adjacent footwall is subject to uplift, which may lead to subaerial exposure and incision, generating a composite type 1 sequence boundary. Away from the fault zone and near segment boundaries, slip rates are much lower and hence relative sea-level change is dominated by eustasy. Here, falls in relative sea level are important, resulting in type 1 sequences. Sequence stacking patterns reflect not only eustasy and local fault-controlled subsidence, but also the interaction of these with adjacent uplifting footwalls and/or regional uplift. Tectonic influence on sequence development will be more pronounced during greenhouse times than icehouse times. © 1994.
Partington MA, Mitchener BC, Milton NJ, et al., 1993, Genetic sequence stratigraphy for the North Sea Late Jurassic and early cretaceous: Distribution and prediction of Kimmeridgian-Late Ryazanian reservoirs in the North Sea and adjacent areas, Pages: 347-370, ISSN: 2047-9921
Sediments of Kimmeridgian to Late Ryazanian age form a group of key hydrocarbon play fairways in the syn-rift Jurassic of the North Sea. The perceived yet-to-find reserves of these often subtle plays, lying at or below seismic resolution, have attracted considerable industry attention over the past few years. Reserves are currently estimated by BP Exploration at 1 to 5 billion barrels of oil equivalent, reservoired in three play systems: (1) apron fans (e.g. Brae type); (2) basin floor fans (e.g. Miller, Galley, Ettrick and Magnus types); (3) shallow marine shelf (e.g. Ula, Gyda, Fulmar, Piper, Clyde types). In order to assess the future exploration potential of this play fairway, a high resolution, predictive, sequence stratigraphy was erected for the North Sea Late Jurassic. The stratigraphic framework combines data from over 500 exploration wells with seismic and field data (Magnus, Brae, Miller, Ula, Gyda and Clyde). In the Late Oxfordian to Late Ryazanian, a total of 11 genetic stratigraphic sequences have been defined. They are bounded by maximum flooding surfaces which, within the limits of the biostratigraphy, represent basin-wide isochronous events across NW Europe and can be recognized in exploration wells and at outcrop from Greenland to the Wessex Basin. The maximum flooding surfaces have been biostratigraphically calibrated to provide a consistent and easily identifiable stratigraphic framework. Candidate sequence boundaries have been interpreted within this stratigraphic framework, from basin-ward shifts of facies belts, using sedimentological and wireline log data. The combination of these stratigraphic methods has produced a very powerful tool to predict the presence and distribution of potential reservoirs and play types across the entire North Sea Basin from outcrop in East Greenland to the offshore Netherlands. The model suggests that three major cycles of sand input into the basin can be recognized with an overall marked decrease in net sand cont
Knott SD, Burchell MT, Jolley EJ, et al., 1993, Mesozoic to Cenozoic plate reconstructions of the North Atlantic and hydrocarbon plays of the Atlantic margins, Pages: 953-974, ISSN: 2047-9921
An integrated approach using plate tectonic analyses and detailed comparative stratigraphy of the North Atlantic has placed new constraints on the Mesozoic to Cenozoic geological history of the Atlantic margin of NW Europe. Key reconstructions from Mesozoic time to the present day have been plotted to show the evolution of the North Atlantic, and in particular the Rockall Trough. The reconstructions show Rockall Plateau attached to Greenland from Late Paleozoic time (380 Ma) to Late Cretaceous time (83 Ma) since when Rockall remained attached to Eurasia. The Rockall Trough probably initiated during end-Carboniferous to Early Permian time and underwent further stretching episodes in the Early Triassic, Early Jurassic, Middle Jurassic, Late Jurassic, Early Cretaceous, mid-Cretaceous and Late Cretaceous to give the present-day Rockall Trough configuration. The Permo-Triassic rift was dominated by oblique opening with a left-lateral component of strike-slip. Jurassic through Early Cretaceous extension was characterized by predominantly left-lateral strike-slip with a minor dip-slip component in the Faeroe basin and north Rockall Trough, and mainly dip-slip extension in central and south Rockall Trough. In Early Cretaceous time (mid-Aptian) the majority of the United Kingdom Continental Shelf (UKCS) Atlantic margin underwent orthogonal opening followed by continued extension in Late Cretaceous to Paleocene time, culminating in the opening of the North Atlantic west Rockall Plateau. The main Late Jurassic and Early Cretaceous rift episodes conveniently divide the stratigraphy into pre-, syn- and post-rift megasequences which form gross play fairways along the North Atlantic margin. Analysis of these fairways permits integration of data from both mature (e.g. North Sea) and immature (e.g. North Atlantic margin) exploration provinces and helps provide a consistent, predictive approach to the assessment of future hydrocarbon potential of the frontier basins lying along the N
Hodgson NA, Farnsworth J, Fraser AJ, 1992, Salt-related tectonics, sedimentation and hydrocarbon plays in the Central Graben, North Sea, UKCS, Geological Society Special Publication, Vol: 67, Pages: 31-63, ISSN: 0305-8719
The presence of an extensive Permian salt basin underlying the Central Graben in the UKCS Northern North Sea has strongly influenced patterns of tectonics and sedimentation in the area throughout the Mesozoic and Tertiary. The salt accumulated in the northern of two Zechstein basins lying north of the east-west trending Variscan mountain front. Salt withdrawal and dissolution during the Triassic and early/mid-Jurassic led to the formation of a series of roughly north-south oriented salt ridges and intervening depo-axes, the latter providing the accommodation space for the deposition of continental, mainly fluvio-lacustrine, sediments. The major late Jurassic rift event in the North Sea utilized the inherent Triassic tectono-sedimentary grain with the salt acting as an important detachment between the underlying rejuvenated Permian fault system and the incipient late Jurassic faults. Cretaceous thermal subsidence was locally enhanced by halokinesis in the region of the salt basin. Sediment down-building led to the initiation of prominent salt domes in the main areas of late Jurassic rifting and subsequently the formation of salt diapirs. These have continued to develop to the present day as a result of late Cretaceous and Tertiary subsidence and chalk/deltaic sedimentation. Throughout this time, the sea bed topography generated by salt movement has influenced sediment dispersal patterns around diapir flanks. © The Geological Society 1992.
Hodgson NA, Farnsworth J, Fraser AJ, 1992, Salt-related tectonics, sedimentation and hydrocarbon plays in the Central Graben, North Sea, UKCS, Exploration Britain: geological insights for the next decade, Pages: 31-63
The presence of an extensive Permian salt basin underlying the Central Graben has strongly influenced patterns of tectonics and sedimentation throughout the Mesozoic and Tertiary. The salt accumulated in the northern of two Zechstein basins lying north of the Variscan mountain front. Salt withdrawal and dissolution during the Triassic and early/mid-Jurassic led to the formation of a series of salt ridges and intervening depo-axes, the latter providing the accommodation space for the deposition of continental sediments. The major late Jurassic rift event in the North Sea utilized the inherent Triassic tectono-sedimentary grain. Cretaceous thermal subsidence was locally enhanced by halokinesis. Sediment down-building led to the initiation of prominent salt domes in the main areas of late Jurassic rifting and subsequently the formation of salt diapirs. These have continued to develop to the present day. Thrpoughout this time, the sea bed topography generated by salt movement has influenced sediment dispersal patterns around diapir flanks. -from Authors
Fraser AJ, Nash DF, Steele RP, et al., 1990, A regional assessment of the intra-Carboniferous play of Northern England, Geological Society Special Publication, Vol: 50, Pages: 417-440, ISSN: 0305-8719
Hydrocarbons have been produced from the Carboniferous of the East Midlands since the 1920s. Some 30 discoveries have been made to date and although field sizes are generally small, the relatively low costs have made exploration and development an attractive commercial proposition. Many of the factors which contribute to success in the East Midlands occur in other basins in Northern England but have not produced significant hydrocarbon accumulations. This paper examines the key attributes of the intra-Carboniferous play and through an integrated regional geological framework contrasts the successful East Midlands oil province with the other Carboniferous basins of Northern England. © 1990 The Geological Society.
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