North Oman fault geometries in outcrops, analogues and subsurface
Published:January 01, 2014
Pascal Richard, Loic Bazalgette, Mohammed Al-Kindi, 2014. "North Oman fault geometries in outcrops, analogues and subsurface", Tectonic Evolution of the Oman Mountains, H. R. Rollinson, M. P. Searle, I. A. Abbasi, A. I. Al-Lazki, M. H. Al Kindi
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North Oman offers a rare opportunity for making outcrop observations of faults developed in carbonate formations that are also producing reservoirs in the subsurface. It is possible to look in great detail at fault geometries and associated fault damage zones, both in map view and cross-sections. These observations allow the establishment of geometrical concepts and rules to be established that allow the interpretation of seismic faults and the building of coherent static models. This paper highlights how the combination of the input from outcrops, a database of sandbox analogue models and high quality seismic data enables the development of conceptual geometrical models of faults. These conceptual geometrical models support interpretation and modelling strategies and workflows for the construction of geo-cellular models. In the first part of this paper, the challenge faced by the geo-modeller is described. A description of the vertical segmentation of faults in cross-section is provided. A summary of these observations is sketched as a series of 3D block diagrams. Finally, the mechanisms of fault initiation and growth through time reviewed to highlight the particular 3D segmented nature of faults in carbonate.
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Tectonic Evolution of the Oman Mountains
The Oman Mountains contain one of the world's best- exposed and best-understood fold–thrust belts and the largest, best-exposed and most intensively studied ophiolite complex on Earth. This volume presents new international research from authors currently active in the field focusing on the geology of the Oman Mountains, the foreland region, the carbonate platforms of Northern and Central Oman and the underlying basement complex. In addition there is a particular focus on geoconservation in the region. The volume is divided into three main sections that discuss the tectonics of the Arabian plate using insights from geophysics, petrology, structural geology, geochronology and palaeontology; the petrology and geochemistry of the Oman Ophiolite and the sedimentary and hydrocarbon systems of Oman, drawing on the geophysics, structure and sedimentology of these systems. The volume is enhanced by numerous colour images provided courtesy of Petroleum Development Oman.