Academic literature on the topic 'Accretion prism'

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Journal articles on the topic "Accretion prism"

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Shreve, Ronald L., and Mark Cloos. "Dynamics of sediment subduction, melange formation, and prism accretion." Journal of Geophysical Research 91, B10 (1986): 10229. http://dx.doi.org/10.1029/jb091ib10p10229.

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Safonova, I. Yu, and А. I. Khanchuk. "SUBDUCTION EROSION AT PACIFIC-TYPE CONVERGENT MARGINS." Tikhookeanskaya Geologiya 40, no. 6 (2021): 3–19. http://dx.doi.org/10.30911/0207-4028-2021-40-6-3-19.

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The paper presents a review of processes of subduction or tectonic erosion at the Pacific-type convergent margins (PTCM) including definition of “tectonic erosion”, its triggers, driving forces and consequences. We review examples of tectonic erosion at the Circum-Pacific PTCMs and at the fossil PTCMs of the Paleo-Asian Ocean (PAO) currently hosted by the Central-Asian Orogenic Belt (CAOB). Recent geological and stratigraphic studies have shown two types of PTCMs: accreting and eroding. Accreting PTCMs consist of older deposits of accretionary and frontal prisms and grow oceanward, i.e. the tr
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Polat, Ali, Thomas Kokfelt, Kevin C. Burke, et al. "Lithological, structural, and geochemical characteristics of the Mesoarchean Târtoq greenstone belt, southern West Greenland, and the Chugach – Prince William accretionary complex, southern Alaska: evidence for uniformitarian plate-tectonic processes." Canadian Journal of Earth Sciences 53, no. 11 (2016): 1336–71. http://dx.doi.org/10.1139/cjes-2016-0023.

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The Mesoarchean Târtoq greenstone belt, southern West Greenland, consists of tectonically imbricated slices of metamorphosed basalt, gabbro, peridotite, and sedimentary rocks and is intruded by felsic rocks (now mylonites) with well-preserved duplex structures, representing a relict accretionary prism. The Târtoq greenstone belt is a remnant of a supra-subduction zone ophiolite that originated as back-arc basin oceanic crust. Following the initiation of intra-oceanic subduction, the back-arc oceanic crust accreted to the overriding plate, forming an accretionary prism. The felsic mylonites are
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Cardace, Dawn, and Julie D. Morris. "Geochemical evidence for sediment accretion in the Costa Rica Frontal Prism." Geology 37, no. 10 (2009): 891–94. http://dx.doi.org/10.1130/g25631a.1.

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Tréhu, Anne M., Bridget Hass, Alexander de Moor, et al. "Geologic controls on up-dip and along-strike propagation of slip during subduction zone earthquakes from a high-resolution seismic reflection survey across the northern limit of slip during the 2010 Mw 8.8 Maule earthquake, offshore Chile." Geosphere 15, no. 6 (2019): 1751–73. http://dx.doi.org/10.1130/ges02099.1.

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Abstract A grid of closely spaced, high-resolution multichannel seismic (MCS) reflection profiles was acquired in May 2012 over the outer accretionary prism up dip from the patch of greatest slip during the 2010 Mw 8.8 Maule earthquake (offshore Chile) to complement a natural-source seismic experiment designed to monitor the post-earthquake response of the outer accretionary prism. We describe the MCS data and discuss the implications for the response of the accretionary prism during the earthquake and for the long-term evolution of the margin. The most notable observation from the seismic ref
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Zagorevski, A., and V. McNicoll. "Evidence for seamount accretion to a peri-Laurentian arc during closure of Iapetus 1This article is one of a series of papers published in CJES Special Issue: In honour of Ward Neale on the theme of Appalachian and Grenvillian geology.2 Geological Survey of Canada Contribution 20100465." Canadian Journal of Earth Sciences 49, no. 1 (2012): 147–65. http://dx.doi.org/10.1139/e11-016.

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The Red Indian Line is the fundamental Iapetus suture zone in the Newfoundland Appalchians along which the main tract of the Iapetus Ocean was consumed. Despite being the site of the closure of a wide ocean, few vestiges of the Iapetus plate have been accreted along Red Indian Line. Ordovician rocks in the Notre Dame Bay area preserve the only evidence for accretion of a seamount in Newfoundland. The seamount is characterized by alkali basalt and hypabyssal rocks that are juxtaposed with Darriwilian peri-Laurentian volcanic arc rocks (466 ± 4 and 467 ± 4 Ma) along a major mylonite zone. The my
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Chen, F., G. H. Zhou, and J. Kong. "Anthropogenic Influences on the Hydrodynamic and Tidal Discharge in Tongzhou Bay, Nantong, China." Journal of Physics: Conference Series 2486, no. 1 (2023): 012042. http://dx.doi.org/10.1088/1742-6596/2486/1/012042.

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Abstract In this study, we determined the variations of tidal flow field and tidal prism caused by human activities in Tongzhou bay and using MIKE 21 hydrodynamic model as analyzing tool. After the human activities, the hydrodynamic in sea area alongshore engineering is changed, the most obvious changes can reach over 0.1m/s; the tidal discharge decreases caused by the land accretion leading to the shrink of the area of Nantong near-shore waters, there is up to 12% reduction after planned reclamation during one spring tide period.
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Kawamura, Kiichiro, and Yujiro Ogawa. "Internal structure, active tectonics and dynamic topography of the eastern Nankai accretionary prism toe, Japan, and its tsunamigenic potential." Geological Magazine 158, no. 1 (2018): 30–38. http://dx.doi.org/10.1017/s0016756818000699.

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AbstractThe eastern Nankai accretionary prism toe was surveyed to evaluate the nature and deformation of its frontal thrust. According to the determined porosities and yield strengths, turbidites were successively buried down to depths of 250–300 m before accretion, and were then exposed at the prism toe by uplift along the Tenryu frontal thrust during 3.4–1.98 Ma. Consolidation tests provided reasonable estimates of burial depth and, when combined with exposed sediment dates, yield prism toe uplift rates of 0.74–2.27 m ka–1. The displacement along the frontal thrust is estimated to be 500–900
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Williams, Howard R. "Subprovince accretion tectonics in the south-central Superior Province." Canadian Journal of Earth Sciences 27, no. 4 (1990): 570–81. http://dx.doi.org/10.1139/e90-053.

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Development of tectonic subprovinces as shear-bounded granite–greenstone and sediment-dominated terranes during the late Archaean is reviewed and interpreted from relationships between portions of the Wabigoon, Wawa, and Quetico subprovinces.Greenstone-dominated subprovinces (Wabigoon and Wawa) are complex successions of tholeiites, 2.76–2.70 Ga calc-alkaline volcanic centres, and derived sediments. Supracrustal rocks aggregated on a scale of tens of kilometres, forming homoclines, locally upright folded, intruded by granitoids, exhibiting variable fabric trends and strains, and cut by transcu
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Devaney, Jonathan R., and Howard R. Williams. "Evolution of an Archean subprovince boundary: a sedimentological and structural study of part of the Wabigoon–Quetico boundary in northern Ontario." Canadian Journal of Earth Sciences 26, no. 5 (1989): 1013–26. http://dx.doi.org/10.1139/e89-082.

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A prograded clastic wedge, represented by formation- to group-scale units of metasedimentary strata in the Beardmore–Geraldton Terrane, developed in a transitional zone at the southern margin of a volcanic arc between the Onaman–Tashota Terrane, part of the Wabigoon Subprovince to the north, and the Quetico Subprovince, an accretionary prism to the south. Megasequences or couplets with lower basaltic and upper clastic sedimentary parts are now exposed as regionally metamorphosed mafic volcanic and sedimentary belts, outlining thrust slices. Relatively proximal facies (belts) are juxtaposed on
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Dissertations / Theses on the topic "Accretion prism"

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Pajang, Sepideh. "Short-term deformation of accretionary prism, the role of mechanical and thermal inheritance. Application to Makran." Electronic Thesis or Diss., Sorbonne université, 2021. http://www.theses.fr/2021SORUS483.

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Les données GPS indiquent que la subduction accumule des contraintes qui devraient être libérées lors de futurs séismes, Makran potentiel sismogénique est très mal contraint. J’ai d’abord construit une carte structurale le long de la partie iranienne de la mer d'Oman. Ensuite, j’ai contraint la pression de fluide interstitiel et les propriétés de friction du prisme à partir de la théorie du prisme critique et de l'analyse limite. Les résultats montrent que le long des profils Est et Ouest, une transition d'une friction très faible à une friction extrêmement faible est nécessaire pour activer l
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BOURLANGE, Sylvain. "Relations entre fluides et déformations dans le prisme d'accrétion de Nankai." Phd thesis, Université Paris Sud - Paris XI, 2003. http://tel.archives-ouvertes.fr/tel-00008747.

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Ce travail de thèse est une étude des relations entre les fluides et les déformations dans le prisme d'accrétion de Nankai. Ce travail s'appuie entre autres sur les résultats des deux campagnes de forage récentes Leg Ocean Drilling Program 190 et 196. L'étude des relations entre la mise en place de déformations et les circulations de fluides est plus particulièrement centrée sur le décollement, au front du prisme. Nous présentons d'abord une estimation de la surpression de fluides dans les formations sédimentaires autour du décollement à partir de l'étude des profils de porosité. Ceci nous per
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Aillères, Laurent. "Structure et cinématique de la zone houillère briançonnaise entre Arc et Isère (Alpes francaises) : apport de l'inversion des données de la déformation finie aux modèles cinématiques classiques." Vandoeuvre-les-Nancy, INPL, 1996. http://docnum.univ-lorraine.fr/public/INPL_T_1996_AILLERES_L.pdf.

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A partir de nouvelles observations structurales, nous proposons un nouveau modèle cinématique pour la Zone Houillère Briançonnaise, située au-dessus du front briançonnais (structure majeure des Alpes occidentales). Ce modèle est conforté par l'inversion des données de déformation finie, interpolées et visualisées à l'aide du modeleur 3D GOCAD (ENSG-LIAD Nancy). Les données de déformation finie ont été acquises par l'utilisation d'algorithmes d'analyse d'images, semi-automatisées au cours de ce travail. L'inversion a été effectuée à l'aide du logiciel FaultPack (Université Rennes 1). Le modèle
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Sunderland, Elizabeth Blanche. "Sediment microstructures and deformation at the toe of the Nankai accretionary prism: Effects of accretion and diagenesis, and evolution of the decollement." Thesis, 2004. http://hdl.handle.net/1911/17734.

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Sediments incorporated into accretionary prisms experience significant changes in physical properties, grain fabric, and diagenesis. The record of such changes is preserved in sediment microstructures. Scanning electron microscopy (SEM) analyses were carried out on sediments collected from within and seaward of the Nankai accretionary prism to document microstructural changes with depth, lithology, and discrete deformation during the earliest stages of tectonic deformation. Clay mineral preferred orientations (CPOs) increased with depth due to burial, inclined CPOs were evident adjacent to dis
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Book chapters on the topic "Accretion prism"

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Ohara, Yasuhiko, Kyoko Okino, and Jonathan E. Snow. "Tectonics of Unusual Crustal Accretion in the Parece Vela Basin." In Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-8885-7_7.

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Deville, E., A. Mascle, S. H. Guerlais, C. Decalf, and B. Colletta. "Lateral Changes of Frontal Accretion and Mud Volcanism Processes in the Barbados Accretionary Prism and Some Implications." In The Circum-Gulf of Mexico and the CaribbeanHydrocarbon Habitats, Basin Formation and Plate Tectonics. American Association of Petroleum Geologists, 2003. http://dx.doi.org/10.1306/m79877c30.

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V., Igor. "Tektono-Stratigraphy as a Reflection of Accretion Tectonics Processes (on an Example of the Nadankhada-Bikin Terrane of the Sikhote-Alin Jurassic Accretionary Prism, Russia Far East)." In Stratigraphic Analysis of Layered Deposits. InTech, 2012. http://dx.doi.org/10.5772/35216.

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Corrigan, D., and D. Van Rooyen. "Paleoproterozoic Earth and the transition toward modern tectonic processes: A synopsis." In Laurentia: Turning Points in the Evolution of a Continent. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1220(04).

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ABSTRACT Many of the hallmarks of modern plate-tectonic processes first occurred in the Paleoproterozoic Era, indicating that the mechanical, thermal, and compositional parameters of Earth’s lithosphere had evolved to approximately modern ranges of values by that time. The core of Laurentia preserves widespread examples of both convergent and divergent tectonic processes in the time span from 2.2 to 1.7 Ga, particularly within the Trans-Hudson composite orogen. Large continental masses or supercontinents previously accreted during the Neoarchean Era began to break up between 2.4 and 2.0 Ga, leading to the deposition of widespread passive-margin sedimentary prisms and locally voluminous emplacement of mafic magma in radiating dike swarms. Further rifting and drifting led to the formation of incipient (e.g., Bravo Formation) to fully developed oceanic crust (e.g., Manikewan Ocean). Plate convergence beginning ca. 1.92 Ga heralded the demise of the Manikewan Ocean ~150 m.y. after its postulated opening. Protracted subduction of oceanic lithosphere over a period of ~90 m.y. produced a series of island arcs, some of which (Lynn Lake, Flin Flon, Snow Lake) host world-class volcanogenic massive sulfide (VMS) ± Au deposits. Plate convergence also led to progressive southeastward (present-day coordinates) accretion of microplates on a pre-amalgamated core consisting of the Slave craton and the Rae and Hearne “Provinces,” forming the Churchill plate. Following the formation of the Churchill plate collage ca. 1.86 Ga, subduction of oceanic lithosphere organized along an ~4000-km-long, north-dipping subduction zone along the southeastern edge of the Churchill plate, producing voluminous continental arc magmas in an Andean-type setting. The final phase of tectonic evolution involved collision of the Superior and North Atlantic cratons with the Churchill plate and intervening juvenile oceanic arc terranes. That phase was strongly influenced by the irregular shape of the indenting Superior craton, favoring the development of oroclines and leading to escape tectonics and lateral extrusion of continental microplates. For the most part, the Trans-Hudson was a hot but not necessarily thick orogen, perhaps reflecting a higher geothermal gradient during the Paleoproterozoic Era.
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