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Diapirism theory and experiment
Tectonophysics, 1972Abstract The application of fluid dynamics to layered systems with one or several flexible boundaries affected by gravity is reviewed. The theoretical equations are verified from models studied by the finite-element method and by experimental tests with liquid models.
H. Berner, H. Ramberg, O. Stephansson
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Diapirs, Intrusions and Wedges
1989Various kinds of diapirs, intrusions and wedges are widely and commonly reported from glaciogenic sequences. Intrusive structures range in lateral size from only a few cm to > 100 m (fig. 1-4) and may have vertical dimensions of several lOs of m. Intrusive structures rarely give rise to distinctive or noticeable landforms, but they may dominate the ...
James S. Aber +2 more
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Diapiric penetration with melting
Physics of the Earth and Planetary Interiors, 1984Abstract We consider a series of problems in which a solid or an immiscible fluid body melts its way through a solid medium. Both internal heat generation and viscous heating are considered. We hypothesize that the melted medium is confined to a thin squeeze film on the upstream portion of the body and that the lubrication approximation is valid in ...
Steven H. Emerman, Donald L. Turcotte
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Geology, 1981
Diapiric ascent is often assumed to occur in a mantle with a viscosity of order 10^(21) P, the value estimated from glacial rebound studies. Segregation of melt from residual crystals en route is then a necessary consequence of the slow ascent velocity. The temperatures and stresses associated with diapirs, however, are much greater than those involved
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Diapiric ascent is often assumed to occur in a mantle with a viscosity of order 10^(21) P, the value estimated from glacial rebound studies. Segregation of melt from residual crystals en route is then a necessary consequence of the slow ascent velocity. The temperatures and stresses associated with diapirs, however, are much greater than those involved
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Journal of Structural Geology, 1981
Abstract The diapirs of Northern Tunisia, composed mainly of evaporitic Triassic material, are the result of a complex evolution initiated by local basement movements of NNE-SSW faults, which at the end of the Early Cretaceous. This first uplift, occurring during a period without any folding of the sedimentary series, is purely halokinetic.
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Abstract The diapirs of Northern Tunisia, composed mainly of evaporitic Triassic material, are the result of a complex evolution initiated by local basement movements of NNE-SSW faults, which at the end of the Early Cretaceous. This first uplift, occurring during a period without any folding of the sedimentary series, is purely halokinetic.
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Anatomy of mushroom-shaped diapirs
Journal of Structural Geology, 1989We produced more than 100 mushroom-shaped diapirs in eight centrifuged models under acceleration of 1200 g. The modelling results allow natural examples to be recognized. Mushroom diapirs have an overhanging bulb fringed by one or more skirts, which can curl inward to form vortices capable of entraining cover material to various degrees.
M.P.A Jackson, C.J Talbot
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South Atlantic Diapiric Structures
AAPG Bulletin, 1976A zone of offshore diapiric structures is present with a region of known continental-shelf salt and associated evaporites on the margin of eastern Brazil. The zone extends along the Brazilian margin for approximately 18° of latitude. At its southern end, off Santos, the diapir zone is approximately 350 mi wide where it forms the Sao Paulo plateau.
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AAPG Bulletin, 1970
Recently recognized sea-floor diapiric structures are widespread, ranging from the well-known western Mediterranean structures to similar features in the eastern and western extremities of the Atlantic. A few also have been noted in parts of the Pacific.
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Recently recognized sea-floor diapiric structures are widespread, ranging from the well-known western Mediterranean structures to similar features in the eastern and western extremities of the Atlantic. A few also have been noted in parts of the Pacific.
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Clay Diapirism and Overthrust Faulting
Geological Society of America Bulletin, 1974The fluid-pressure hypothesis of overthrust faulting is extended in terms of stratigraphically controlled clay diapirism in the upper 2 or 3 km of a young, regressive marine sedimentary sequence. Such a sequence, with thick clay loaded by coarse clastic sediments, is mechanically unstable because the clay beds initially are undercompacted and have ...
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Cuban Evaporite Diapirs: ABSTRACT
AAPG Bulletin, 1965At least five rock sequences occur in central Cuba: (1) an igneous-metamorphic basement of unknown age; (2) a Jurassic evaporite-redbed sequence; (3) a Portlandian-Turonian orthogeosynclinal suite; (4) a Turonian-Eocene series; and (5) a post-orogenic Eocene-Recent sedimentary cover. The Portlandian-Turonian orthogeosynclinal suite includes, from south
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