Matches in SemOpenAlex for { <https://semopenalex.org/work/W4322003005> ?p ?o ?g. }
Showing items 1 to 58 of
58
with 100 items per page.
- W4322003005 abstract "Growth rate of salt diapirs usually oscillates depending on several factors. The growth can be arrested by depletion of the source layer or diapir burial, conversely, diapir reactivation occurs through erosion of the overburden and/or introduction of tectonic forces. Examples of reactivated diapirs can be observed in the Zagros Mountains in Iran. There, tectonic shortening responsible for development of the Zagros Fold and Thrust Belt simultaneously squeezes the diapirs, which extrude salt onto the surface. The top section of the diapir is usually affected by meteoric water, which dissolves the salt and leaves behind insoluble material embedded within the source layer, forming the so called caprock. This caprock can be assumed to be already present before the reactivation of the diapirs during shortening, hence it may play a role in the development of the salt extrusions. Geometry, composition and mechanical properties of the caprock can vary widely depending on factors such as original composition of diapiric material, dissolution and growth rates, etc. Additionally, exact mechanical properties of any caprock are difficult to determine and are currently largely unknown. Hence, we present a series of 2D numerical simulations utilising finite element method to investigate how different geometries and rheologies of the caprock affect the shape of the subaerial extrusions. The analysis was performed with three variable parameters (caprock viscosity, cohesion, and thickness) for three scenarios of diapirism (1 - purely shortening-based, with depleted source layer; 2 - purely buoyancy-based, with preserved source layer and no tectonic forces, and; 3) a combined scenario). We analysed the general deformation patterns as well as quantifiers such as velocities, displacements, strains, strain rates and ratios between vertical and horizontal components of the quantifiers. We investigated variability of averaged values of the quantifiers in time as well as detailed spatial distribution for the finite state of simulation. The simulations revealed the strong contrast between less (low cohesion and viscosity) and more competent rheologies in term of deformation patterns. The former tends to result in caprock material being thinly spread over the surface of the salt extrusion, whereas in the latter case the caprock fractures into “rafts” floating on top of the extrusion. The exact geometry of the rafts (size, spacing, distribution) is highly dependent on the geometry and type of diapirism. We also compare the resultant patterns to the quantifiers, especially velocities and their ratios, establishing clear ties between the patterns and deformation dynamics. " @default.
- W4322003005 created "2023-02-26" @default.
- W4322003005 creator A5025675541 @default.
- W4322003005 creator A5026066315 @default.
- W4322003005 creator A5070377430 @default.
- W4322003005 creator A5075798179 @default.
- W4322003005 creator A5011637690 @default.
- W4322003005 date "2023-05-15" @default.
- W4322003005 modified "2023-10-06" @default.
- W4322003005 title "Influence of cap-rock on deformation during extrusion of salt diapir – a numerical study" @default.
- W4322003005 doi "https://doi.org/10.5194/egusphere-egu23-12189" @default.
- W4322003005 hasPublicationYear "2023" @default.
- W4322003005 type Work @default.
- W4322003005 citedByCount "0" @default.
- W4322003005 crossrefType "posted-content" @default.
- W4322003005 hasAuthorship W4322003005A5011637690 @default.
- W4322003005 hasAuthorship W4322003005A5025675541 @default.
- W4322003005 hasAuthorship W4322003005A5026066315 @default.
- W4322003005 hasAuthorship W4322003005A5070377430 @default.
- W4322003005 hasAuthorship W4322003005A5075798179 @default.
- W4322003005 hasConcept C127313418 @default.
- W4322003005 hasConcept C165205528 @default.
- W4322003005 hasConcept C17409809 @default.
- W4322003005 hasConcept C187320778 @default.
- W4322003005 hasConcept C199007388 @default.
- W4322003005 hasConcept C2777201227 @default.
- W4322003005 hasConcept C2778887201 @default.
- W4322003005 hasConcept C34221334 @default.
- W4322003005 hasConcept C5900021 @default.
- W4322003005 hasConcept C6494504 @default.
- W4322003005 hasConcept C77928131 @default.
- W4322003005 hasConceptScore W4322003005C127313418 @default.
- W4322003005 hasConceptScore W4322003005C165205528 @default.
- W4322003005 hasConceptScore W4322003005C17409809 @default.
- W4322003005 hasConceptScore W4322003005C187320778 @default.
- W4322003005 hasConceptScore W4322003005C199007388 @default.
- W4322003005 hasConceptScore W4322003005C2777201227 @default.
- W4322003005 hasConceptScore W4322003005C2778887201 @default.
- W4322003005 hasConceptScore W4322003005C34221334 @default.
- W4322003005 hasConceptScore W4322003005C5900021 @default.
- W4322003005 hasConceptScore W4322003005C6494504 @default.
- W4322003005 hasConceptScore W4322003005C77928131 @default.
- W4322003005 hasLocation W43220030051 @default.
- W4322003005 hasOpenAccess W4322003005 @default.
- W4322003005 hasPrimaryLocation W43220030051 @default.
- W4322003005 hasRelatedWork W1975052047 @default.
- W4322003005 hasRelatedWork W2034193725 @default.
- W4322003005 hasRelatedWork W2254000772 @default.
- W4322003005 hasRelatedWork W2613824138 @default.
- W4322003005 hasRelatedWork W2964232985 @default.
- W4322003005 hasRelatedWork W3122218398 @default.
- W4322003005 hasRelatedWork W3187047667 @default.
- W4322003005 hasRelatedWork W4220669764 @default.
- W4322003005 hasRelatedWork W4280524112 @default.
- W4322003005 hasRelatedWork W4322003005 @default.
- W4322003005 isParatext "false" @default.
- W4322003005 isRetracted "false" @default.
- W4322003005 workType "article" @default.