FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4253803649> ?p ?o ?g. }

• W4253803649 abstract "Abstract. Orogenic belts formed by collision are impressive manifestations of plate tectonics. Observations from orogenic belts, like the Western Alps, indicate an important involvement of the mantle lithosphere, significant burial and exhumation of continental and oceanic crustal rocks and the importance of the plate interface strength that can be modified, for example, by the presence of serpentinites. A popular model for the formation of such belts is the so-called orogenic wedge model. However, most wedge models consider crustal deformation only and do, hence, not consider subduction, the impact of related buoyancy forces arising from density differences between subducted crust and surrounding mantle and the effects of different plate interface strength. Here, we quantify the relative importance of buoyancy and shear forces in building collisional orogenic wedges. We leverage two-dimensional (2D) petrological-thermo-mechanical numerical simulations of a long-term (ca. 170 Myr) lithosphere deformation cycle involving subsequent hyperextension, cooling, convergence, subduction and collision. We compare simulations employing density fields calculated with linearized equations of state with simulations employing density fields calculated by phase equilibria models including metamorphic reactions. Further, we consider serpentinisation of the mantle material, exhumed in the hyperextended basin. Our models show that differences in density structure and in shear strength of serpentinites or upper crust have a strong impact on the evolution of orogenic wedges. Higher serpentinite strength causes a dominance of shear over buoyancy forces, resulting in either thrust-sheet dominated orogenic wedges, involving some diapiric exhumation at their base, or relamination of crustal material below the overriding plate. Lower serpentinite strength (equal importance of shear and buoyancy forces) generates orogenic wedges that are dominated by diapiric or channel-flow exhumation. Deep subduction (> 80 km) and subsequent surface exhumation of continental crust along the subduction interface occurs in these models. Employing phase equilibria density models decreases the average buoyancy contrasts, allows for deeper subduction of continental crust and reduces the average topography of the wedge by several kilometers. A decrease of upper crustal shear strength causes smaller maximal crustal burial depths. Progressive subduction of continental crust increases upward-directed buoyancy forces of the growing wedge and in turn increases horizontal driving forces. These driving forces eventually reach magnitudes (≈ 18 TN m−1) which were required to initiate subduction during convergence. We suggest that the evolving relation between shear and buoyancy forces and the increase of horizontal driving force related to the growing Alpine orogenic wedge has significantly slowed down (or choked) subduction of the European plate below the Adriatic one between 35 and 25 Ma. This buoyancy-related choking could have caused the reorganization of plate motion and the initiation of subduction of the Adriatic plate. We discuss potential applications and implications of our model results to the Pyrenean and Alpine orogenies." @default.
• W4253803649 created "2022-05-12" @default.
• W4253803649 creator A5019021930 @default.
• W4253803649 creator A5043182140 @default.
• W4253803649 creator A5083402854 @default.
• W4253803649 creator A5084635427 @default.
• W4253803649 date "2021-02-23" @default.
• W4253803649 modified "2023-09-24" @default.
• W4253803649 title "Buoyancy versus shear forces in building orogenic wedges" @default.
• W4253803649 doi "https://doi.org/10.5194/se-2020-217" @default.
• W4253803649 hasPublicationYear "2021" @default.
• W4253803649 type Work @default.
• W4253803649 citedByCount "0" @default.
• W4253803649 crossrefType "posted-content" @default.
• W4253803649 hasAuthorship W4253803649A5019021930 @default.
• W4253803649 hasAuthorship W4253803649A5043182140 @default.
• W4253803649 hasAuthorship W4253803649A5083402854 @default.
• W4253803649 hasAuthorship W4253803649A5084635427 @default.
• W4253803649 hasBestOaLocation W42538036491 @default.
• W4253803649 hasConcept C119477230 @default.
• W4253803649 hasConcept C121332964 @default.
• W4253803649 hasConcept C127313418 @default.
• W4253803649 hasConcept C141646446 @default.
• W4253803649 hasConcept C154200439 @default.
• W4253803649 hasConcept C154912208 @default.
• W4253803649 hasConcept C164485859 @default.
• W4253803649 hasConcept C165205528 @default.
• W4253803649 hasConcept C16942324 @default.
• W4253803649 hasConcept C192367031 @default.
• W4253803649 hasConcept C192717286 @default.
• W4253803649 hasConcept C23295444 @default.
• W4253803649 hasConcept C2776698055 @default.
• W4253803649 hasConcept C538625479 @default.
• W4253803649 hasConcept C57879066 @default.
• W4253803649 hasConcept C58097730 @default.
• W4253803649 hasConcept C5900021 @default.
• W4253803649 hasConcept C67236022 @default.
• W4253803649 hasConcept C77928131 @default.
• W4253803649 hasConcept C8058405 @default.
• W4253803649 hasConcept C96035792 @default.
• W4253803649 hasConceptScore W4253803649C119477230 @default.
• W4253803649 hasConceptScore W4253803649C121332964 @default.
• W4253803649 hasConceptScore W4253803649C127313418 @default.
• W4253803649 hasConceptScore W4253803649C141646446 @default.
• W4253803649 hasConceptScore W4253803649C154200439 @default.
• W4253803649 hasConceptScore W4253803649C154912208 @default.
• W4253803649 hasConceptScore W4253803649C164485859 @default.
• W4253803649 hasConceptScore W4253803649C165205528 @default.
• W4253803649 hasConceptScore W4253803649C16942324 @default.
• W4253803649 hasConceptScore W4253803649C192367031 @default.
• W4253803649 hasConceptScore W4253803649C192717286 @default.
• W4253803649 hasConceptScore W4253803649C23295444 @default.
• W4253803649 hasConceptScore W4253803649C2776698055 @default.
• W4253803649 hasConceptScore W4253803649C538625479 @default.
• W4253803649 hasConceptScore W4253803649C57879066 @default.
• W4253803649 hasConceptScore W4253803649C58097730 @default.
• W4253803649 hasConceptScore W4253803649C5900021 @default.
• W4253803649 hasConceptScore W4253803649C67236022 @default.
• W4253803649 hasConceptScore W4253803649C77928131 @default.
• W4253803649 hasConceptScore W4253803649C8058405 @default.
• W4253803649 hasConceptScore W4253803649C96035792 @default.
• W4253803649 hasFunder F4320320924 @default.
• W4253803649 hasLocation W42538036491 @default.
• W4253803649 hasLocation W42538036492 @default.
• W4253803649 hasLocation W42538036493 @default.
• W4253803649 hasLocation W42538036494 @default.
• W4253803649 hasLocation W42538036495 @default.
• W4253803649 hasOpenAccess W4253803649 @default.
• W4253803649 hasPrimaryLocation W42538036491 @default.
• W4253803649 hasRelatedWork W11388313 @default.
• W4253803649 hasRelatedWork W16514224 @default.
• W4253803649 hasRelatedWork W21301187 @default.
• W4253803649 hasRelatedWork W22604734 @default.
• W4253803649 hasRelatedWork W39228764 @default.
• W4253803649 hasRelatedWork W45837943 @default.
• W4253803649 hasRelatedWork W4664427 @default.
• W4253803649 hasRelatedWork W6230720 @default.
• W4253803649 hasRelatedWork W65907931 @default.
• W4253803649 hasRelatedWork W83494859 @default.
• W4253803649 isParatext "false" @default.
• W4253803649 isRetracted "false" @default.
• W4253803649 workType "article" @default.