Publications
103 results found
Clark CD, Sejrup HP, Bigg G, et al., 2004, Did the Punctuated Demise of Glacial Ice in the North Sea Affect Thermohaline Circulation of the Ocean?, EOS, Vol: 85, (31)
Platt JP, Argles TW, Carter A, et al., 2003, Exhumation of the Ronda peridotite and its crustal envelope:: constraints from thermal modelling of a <i>P</i>-<i>T</i>-time array, JOURNAL OF THE GEOLOGICAL SOCIETY, Vol: 160, Pages: 655-676, ISSN: 0016-7649
- Author Web Link
- Cite
- Citations: 100
James DMD, Jolly R, Lonergan L, 2003, Discussion on mechanisms and controls on the formation of sand intrusions, Journal of the Geological Society, Vol: 160, Pages: 495-496, ISSN: 0016-7649
- Cite
- Citations: 4
Jolly R, Lonergan L, 2003, Discussion on mechanisms and controls on the formation of sand intrusions - Reply, JOURNAL OF THE GEOLOGICAL SOCIETY, Vol: 160, Pages: 496-496, ISSN: 0016-7649
Hanne D, White N, Lonergan L, 2003, Subsidence analyses from the Betic Cordillera, southeast Spain, BASIN RESEARCH, Vol: 15, Pages: 1-21, ISSN: 0950-091X
- Author Web Link
- Cite
- Citations: 25
Tuckwell GW, Lonergan L, Jolly RJH, 2003, The control of stress history and flaw distribution on the evolution of polygonal fracture networks, JOURNAL OF STRUCTURAL GEOLOGY, Vol: 25, Pages: 1241-1250, ISSN: 0191-8141
- Author Web Link
- Cite
- Citations: 47
Jolly RJH, Lonergan L, 2002, Mechanisms and controls on the formation of sand intrusions, JOURNAL OF THE GEOLOGICAL SOCIETY, Vol: 159, Pages: 605-617, ISSN: 0016-7649
- Author Web Link
- Cite
- Citations: 225
Jones KA, Warner M, Le Meur D, et al., 2002, Wide-angle images of the Mediterranean Ridge backstop structure, MARINE GEOLOGY, Vol: 186, Pages: 145-166, ISSN: 0025-3227
- Author Web Link
- Cite
- Citations: 11
Tay PL, Lonergan L, Warner M, et al., 2002, Seismic investigation of thick evaporite deposits on the central and inner unit of the Mediterranean Ridge accretionary complex, MARINE GEOLOGY, Vol: 186, Pages: 167-194, ISSN: 0025-3227
- Author Web Link
- Cite
- Citations: 20
Molyneux S, Cartwright J, Lonergan L, 2002, Conical sandstone injection structures imaged by 3D seismic in the central North Sea, UK, First Break, Vol: 20, Pages: 383-393, ISSN: 0263-5046
- Cite
- Citations: 45
Molyneux S, Cartwright J, Lonergan L, 2002, Technical article: conical sandstone injection structures imaged by 3D seismic in the central North Sea, UK, First Break, Vol: 20, Pages: 383-394, ISSN: 0263-5046
Lonergan L, White NJ, 2001, Three-Dimensional imaging of a dynamic earth, Visions of the future: astronomy and earth science, Editors: Thompson, Cambridge University Press, Publisher: Cambridge, Pages: 157-178, ISBN: 9780521805377
Ryan JL, Lonergan L, Jolly RJH, 2000, Fracture spacing and orientation distributions for two-dimensional data sets, JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, Vol: 105, Pages: 19305-19320, ISSN: 2169-9313
- Author Web Link
- Cite
- Citations: 8
Lonergan L, Lee N, Johnson HD, et al., 2000, Remobilisation and Injection in Deepwater Depositional Systems: Implications for Reservoir Architecture and Prediction, GCSSEPM Foundation Annual Bob F. Perkins Research Conference, Publisher: GCSSEPM Foundation, Pages: 515-532, ISSN: 2161-1955
Lonergan L, White N, 1999, Three-dimensional seismic imaging of a dynamic Earth, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 357, Pages: 3359-3375, ISSN: 1364-503X
- Author Web Link
- Cite
- Citations: 3
Dewhurst DN, Cartwright JA, Lonergan L, 1999, The development of polygonal fault systems by syneresis of colloidal sediments, MARINE AND PETROLEUM GEOLOGY, Vol: 16, Pages: 793-810, ISSN: 0264-8172
- Author Web Link
- Cite
- Citations: 104
Dewhurst DN, Cartwright JA, Lonergan L, 1999, Three-dimensional consolidation of fine-grained sediments, CANADIAN GEOTECHNICAL JOURNAL, Vol: 36, Pages: 355-362, ISSN: 0008-3674
- Author Web Link
- Cite
- Citations: 7
Lonergan L, Cartwright JA, 1999, Polygonal faults and their influence on deep-water sandstone reservoir geometries, Alba field, United Kingdom central North Sea, AAPG Bulletin (American Association of Petroleum Geologists), Vol: 83, Pages: 410-432, ISSN: 0149-1423
Polygonal faults attributed to three-dimensional (3-D) volumetric contraction of muddy sediments during early burial are widespread within the Eocene-lower Miocene succession of the United Kingdom central North Sea. The analysis of a 3-D seismic survey encompassing the Eocene Alba field in the central North Sea has allowed us to investigate (1) the influence of polygonal faults in surrounding mudrocks on the geometry of the Alba deep-water sandstone reservoir and (2) how the presence of the reservoir sandstone influences the polygonal fault pattern above and below the reservoir. The main reservoir in the Alba field is an elongate (12 km long, 1-2 km wide, up to 90 m thick), fine-grained, massive sandstone body that may have been deposited in a deep-water channel or slope gully. Although depositional processes likely have been responsible for the dominantly linear sandstone distribution, the current reservoir geometry is largely controlled by the location of polygonal faults in the surrounding hemipelagic mudstones. Sandstones interpreted as injected along faulted margins of the Alba field indicate that faulting facilitated remobilization and sand injection during early burial, further modifying the reservoir shape. Unusual, isolated 1-km-wide subcircular mounds to the west of the main field also are attributed to sand withdrawal and remobilization during early burial. On a mapped marker horizon in the mudrocks 80-120 m above the reservoir there is a marked decrease in polygonal fault density compared to areas away from the reservoir. On a horizon in mudrocks within 5-50 m of the base of the reservoir there is an increase in horizon disruption due to small faults directly below the sand body. Changes in polygonal fault density and pattern thus may indicate the presence of sandstones and may be a useful exploration tool for explorationists searching for subtle Eocene deep-water sand bodies that typically are poorly imaged on seismic data in the North Sea.
Lonergan L, Cartwright JA, 1999, Polygonal faults and their influence on deep-water sandstone reservoir geometries, Alba Field, United Kingdom central North Sea, AAPG BULLETIN-AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS, Vol: 83, Pages: 410-432, ISSN: 0149-1423
- Author Web Link
- Cite
- Citations: 84
Dewhurst DN, Cartwright JA, Lonergan L, 1999, Three-dimensional consolidation of fine-grained sediments, Canadian Geotechnical Journal, Vol: 36, Pages: 355-362, ISSN: 0008-3674
Current theories of one- to three-dimensional consolidation are based on the concept of gravitational loading with concomitant expulsion of pore fluid as a result of mechanical rearrangements of particles and porosity reduction. However, the recent discovery of extensive networks of layer-bound fractures forming polygonal patterns in extremely fine grained smectitic clays and chalks suggests that current theory may not adequately explain the consolidation process in such sediments. These faults develop during shallow burial and often appear to have been active at the sediment-water interface. Radially isotropic strain suggests that the process of formation was nontectonic. Measured values of strain suggest that deformation resulted from volumetric contraction of the sediments. We argue that the formation mechanism for these fault systems is related to the colloidal properties of the constituent sediments and that, as such, stresses due to gravity may not be the only factor controlling pore-fluid expulsion during consolidation.
McCaffrey KJW, Lonergan L, Wilkinson JJ, 1999, Fractures, Fluid Flow and Mineralisation, Publisher: Geological Society of London Special Publication no. 155, ISBN: 1-86239-034-7
Lonergan L, White NJ, 1999, 3-Dimensional seismic imaging of the dynamic Earth, Philosphical Transactions of the Royal Society of London, Series A, Vol: 357, Pages: 3359-3375
Lonergan L, Wilkinson JJ, McCaffrey KJW, 1999, Fractures, Fluid Flow and Mineralisation: An Introduction, Fractures, Fluid Flow and Mineralisation, Editors: McCaffrey, Lonergan, Wilkinson, McCaffrey, Lonergan, Wilkinson, Pages: 1-6
Lonergan L, Cartwright JA, 1999, Polygonal shrinkage faults and their influence on deepwater reservoir geometries in the Alba Field, UK Central North Sea, AAPG Bulletin, Vol: 83, Pages: 410-432
Lonergan L, Johnson C, 1998, Reconstructing orogenic exhumation histories using synorogenic detrital zircons and apatites: an example from the Betic Cordillera, SE Spain, BASIN RESEARCH, Vol: 10, Pages: 353-364, ISSN: 0950-091X
- Author Web Link
- Cite
- Citations: 42
Lonergan L, Cartwright JA, Laver R, et al., 1998, Polygonal faulting in the Tertiary of the Central North Sea- Implications for reservoir geology, Structural Geology in Reservoir Characterisation and Field Development, Editors: Coward, Johnson, Daltaban, Coward, Johnson, Daltaban, Pages: 191-207
Wilkinson JJ, Lonergan L, Fairs T, et al., 1998, Fluid inclusion constraints on conditions and timing of hydrocarbon migration and quartz cementation in Brent Group reservoir sandstones, northern North Sea, Dating and duration of fluid flow and fluid-rock interaction, Editors: Parnell, Publisher: Geological Society of London, Pages: 69-89, ISBN: 9781862390195
Wlkinson J, Lonergan L, Fairs T, et al., 1998, Fluid inclusion constraints on brine-hydrocarbon migration into Brent Group reservoir sandstones, northern North Sea, Dating and Duration of fluid flow and fluid-Rock interaction, Editors: Parnell, Publisher: Geological Society London, Pages: 69-89, ISBN: 9781862390195
Lonergan L, Cartwright JA, Jolly RJH, 1998, The geometry of polygonal fault systems in Tertiary mudrocks of the North Sea, Journal of Structural Geology, Vol: 20, Pages: 529-548
Lonergan L, White N, 1997, Origin of the Betic-Rif mountain belt, Tectonics, Vol: 16, Pages: 504-522, ISSN: 1944-9194
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.