A5103221795- Geological formations and processes
- earthquake and tectonic studies
- Geological and Geochemical Analysis
- Geological and Geophysical Studies
- Hydrocarbon exploration and reservoir analysis
- Seismic Imaging and Inversion Techniques
- Geological and Geophysical Studies Worldwide
- Geological and Tectonic Studies in Latin America
- Geology and Paleoclimatology Research
- Geochemistry and Geologic Mapping
- Seismic Waves and Analysis
- Paleontology and Stratigraphy of Fossils
- Geological Studies and Exploration
- Hydraulic Fracturing and Reservoir Analysis
- Marine and environmental studies
- Methane Hydrates and Related Phenomena
- High-pressure geophysics and materials
- Geological Modeling and Analysis
- Reservoir Engineering and Simulation Methods
- Geomagnetism and Paleomagnetism Studies
- Geophysics and Gravity Measurements
- Planetary Science and Exploration
- Pleistocene-Era Hominins and Archaeology
- Characterization and Applications of Magnetic Nanoparticles
- Fish biology, ecology, and behavior
Royal Holloway University of London
1994-2020
Chart Industries (United States)
2020
Universidade Federal da Bahia
1986-2018
University of St Andrews
2000
Dalhousie University
2000
ExxonMobil (United States)
2000
University College London
1990
Hospital Ana Nery
1989
National Australia Bank
1984
Midland Valley Exploration (United Kingdom)
1981
Seismic imaging of evaporite bodies is notoriously difficult due to the complex shapes steeply dipping flanks, adjacent overburden strata, and usually strong acoustic impedance velocity contrasts at sediment-evaporite interface. We consider geology salt problems pitfalls associated with their such as raypaths, seismic anisotropy, P- S-wave mode conversions, reflected refractions. also review recent developments in acquisition processing, which have led significant improvements image quality...
Abstract This paper first reviews the salt basins and depositional ages in South Atlantic province. comprises a series of separated by basement highs, deep graben (that never dried up), later volcanic highs subaerial ocean spreading ridges. Initial halite anhydrite deposition occurred Sergipe-Alagoas Basin NE Brazil at c. 124.8 Ma, was closely followed Kwanza Basin, Angola between 124.5 121 Ma. The potassium-magnesium-rich salts were deposited Gabon-Congo before 114.5 age main Santos-Campos...
Abstract The southern Brazilian salt basin, comprising the three sub-basins Santos, Campos and Espirito Santo, was deposited over a pre-existing rifted basin with c. 1–2 km of relief bordered by an outer high that separated from conjugate African margin. evaporites are interpreted to have been very rapidly (<1 Ma) during waning extension. Deposition caused rapid loading so further subsidence occurred mobile drained structurally higher zones into subsiding basins. Seismic evidence...
Research Article| November 01, 1994 Geological evolution of the southeastern Red Sea Rift margin, Republic Yemen IAN DAVISON; DAVISON 1Department Geology, Royal Holloway, University London, Egham, Surrey, United Kingdom TW20 0EX Search for other works by this author on: GSW Google Scholar MOHAMED AL-KADASI; AL-KADASI 0EX2Geology Department, Faculty Science, Sana'a University, P.O. Box 1247, SALAH AL-KHIRBASH; AL-KHIRBASH 2Geology ABDUL K. AL-SUBBARY; AL-SUBBARY JOEL BAKER; BAKER SUZANNE...
The Recôncavo‐Tucano‐Jatobá (RTJ) Rift and many other smaller sedimentary basins in northeast Brazil formed during South Atlantic rifting were subsequently uplifted exhumed so that Albian marine sediments are now located up to 800 m above sea level some 400 km inland from the margin. Local erosion caused by footwall uplift regional erosion, probably resulting magmatic underplating uplift, has removed a large part of thermal sag phase RTJ Rift. flexural cantilever model, incorporating...
Abstract Break-up of the Brazilian margin produced a wide variety structural styles depending on opening kinematics and thermal configuration lithosphere. Wide margins developed in Santos Campos, where stretched continental crust extends for up to 600 km from shoreline; whereas narrow may be only 40 wide. The host largest oil fields, such as those discovered Campos Basin. have good hydrocarbon potential post-rift sequence, but probably better unknown syn-rift plays which still drilled...
Drag zones are highly strained regions developed adjacent to the flanks of salt diapirs, and produced when sedimentary overburden is folded or rotated into steeply dipping attitudes sub-parallel diapiric walls. This case study focuses on a province Cape Breton Island, Nova Scotia, where five Visean-age diapirs penetrate Upper Carboniferous (Namurian–Stephanian) conglomerates, sandstones, shales coal seams. 2D marine seismic coverage extends over several thus allowing drag studied onshore be...
Abstract The Al Salif and Jabal al Milh salt diapirs of Miocene age cut through a 4–5 km thick overburden to Recent sedimentary rocks in the southern Red Sea. diapir is part north-south oriented diapiric wall which has caused updoming active extensional faulting. halite folded into tight isoclinal subvertical folds, with largescale rafts interbedded gypsum-anhydrite boudinaged on fold limbs. There no evidence for large-scale stoping or injection overlying faults fractures, upward movement...
Two contrasting end-members of passive continental margins, here referred to as wide and narrow are present in the South Atlantic, although some margin segments intermediate between these two styles. Narrow margins characterized by a large bounding fault (>4 km throw) near shelf edge; sharp transition zone (10–20 wide) from normal thickness substantially thinned crust or oceanic crust; where total width extended is usually less than 100 km. Wide broad (50–600 km) with an even distribution...
Pressure-solution residues in the Cretaceous to Paleocene chalk from North Sea area were studied understand pressure-solution process and fluid flow. Residue seams reach lengths thickness of more than 800 0.15 m (2625 0.5 ft), respectively. Seams can present significant barriers flow because they have nannodarcy permeability hold back large pressure differentials. Stylolite amplitudes decrease when merge, making it difficult quantify volume loss. Measuring allows volume-loss estimates using...
Abstract: Halite and other evaporite rocks are often considered to be viscous materials that never deform by brittle faulting. However, fractures faults observed very locally in some salt domes glaciers, indicated data or shocks from seismically active areas. Rock mechanics experiments show halite begins faulting once strain rates large enough. it is rare such high occur salt. Faulting most likely where effective confining stress significantly decreased fluid overpressure, so the fails at...
A better understanding of suballochthonous salt petroleum systems can be achieved by thermal modeling a series vertical pseudowell profiles that are positioned along ramps and flats identified at the base level. This allows changing 2D shape highly conductive to taken into account assesses physical parameters control evolution. case study typical cross section through Burgos Basin Perdido Fold Belt is analyzed in an area very active oil exploration northern Mexico. Numerical experiments...