Renseignements suite à un email de description de votre projet. Dunlap, J.W. La plupart des définitions du français sont proposées par SenseGates et comportent un approfondissement avec Littré et plusieurs auteurs techniques spécialisés. [6] After the collision has finished the zone of thickened crust generally undergoes gravitational collapse, often with the formation of very large extensional faults. brittle définition, signification, ce qu'est brittle: 1. delicate and easily broken: 2. unkind and unpleasant: 3. delicate and easily broken: . Extensional tectonics led to the formation of strongly subsiding basins (e.g., Saint Florent and Aleria basins), which are filled with sediments up to 2 km thick, deposited since the Burdigalian (Ferrandini et al., 1996) and continuous with the offshore Corsica basin. A passive margin built out over a weaker layer , such as an overpressured mudstone or salt, tends to spread laterally under its own weight. Zones of thickened crust, such as those formed during continent-continent collision tend to spread laterally; this spreading occurs even when the collisional event is still in progress. From Wikipedia, the free encyclopedia. 3. Extensional Tectonic Structures of the upper crust: Small extensional faults. Jouer, Dictionnaire de la langue françaisePrincipales Références. Fixer la signification de chaque méta-donnée (multilingue). Structural inversion involves fault movements … Extensional tectonics is concerned with the structures formed, and the tectonic processes associated with, the stretching of the crust or lithosphere. 1997. Extensional tectonics is associated with the stretching and thinning of the crust or the lithosphere.This type of tectonics is found at divergent plate boundaries, in continental rifts, during and after a period of continental collision caused by the lateral spreading of the thickened crust formed, at releasing bends in strike-slip faults, in back-arc basins, and on the continental … De très nombreux exemples de phrases traduites contenant "extensional tectonics" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. However, it is important to note that a lithospheric signal is sometimes removed from models or observations in order to investigate … En savoir plus. Robert B. Smith. Il s'agit en 3 minutes de trouver le plus grand nombre de mots possibles de trois lettres et plus dans une grille de 16 lettres. Obtenir des informations en XML pour filtrer le meilleur contenu. Search for more papers by this author. Tous droits réservés. The types of structure and the geometries formed depend on the amount of stretching involved. [5] Examples of active continental rifts are the Baikal Rift Zone and the East African Rift. The section reproduced convincingly demon- strates that parts of a given hanging wall may remain unrotated while other parts may rotate in opposite direc- tions. Schematic diagram of stratigraphy accumulated before, during and after extensional fault movement. Copyright © 2000-2016 sensagent : Encyclopédie en ligne, Thesaurus, dictionnaire de définitions et plus. The break-up unconformity is shown as a wavy line at the top of the synrift sequence. Definition of A, extensional and B, contractional faults. During the depositional period of SQ5, although the basin had entered a rifting and extensional period, tectonic inversion occurred, resulting in subsiding in the north and uplifting in the south. Les lettres doivent être adjacentes et les mots les plus longs sont les meilleurs. Proffett, J.M. What does extensional mean? Consider a rectangular parallelepiped, a bricklike block of material with mutually perpendicular planar faces, and let the edges of the block be parallel to the 1, 2, and 3 axes. Extensional basin geometry and the elastic lithosphere. Extensional tectonics and sedimentary basin devel- opment A Stephano-Pennian continental sedimentary basin was formed northeast of the Axial Zone (Becq-Giraudon, 1973) (Fig. LA fenêtre fournit des explications et des traductions contextuelles, c'est-à-dire sans obliger votre visiteur à quitter votre page web ! Astuce: parcourir les champs sémantiques du dictionnaire analogique en plusieurs langues pour mieux apprendre avec sensagent. un contenu abusif (raciste, pornographique, diffamatoire), "Geometry and kinematics of inversion tectonics", http://books.google.co.uk/books?id=qGI5V7VzKLsC&pg=PA250&dq=%22extensional+fault%22+definition&lr=&ei=rf33SqCrFqCeygTi5qiiDw#v=onepage&q=%22extensional%20fault%22%20definition&f=false, anagramme, mot-croisé, joker, Lettris et Boggle, est motorisé par Memodata pour faciliter les. Il s'agit en 3 minutes de trouver le plus grand nombre de mots possibles de trois lettres et plus dans une grille de 16 lettres. Breakaway fault 6. springer. Indexer des images et définir des méta-données. 1.1 Low beta factor; … Am. Schematic diagram (not to … Extensional tectonics. Les lettres doivent être adjacentes et les mots les plus longs sont les meilleurs. Chaque lettre qui apparaît descend ; il faut placer les lettres de telle manière que des mots se forment (gauche, droit, haut et bas) et que de la place soit libérée. Other articles where Extensional strain is discussed: mechanics of solids: Strain and strain-displacement relations: …simple types of strain are extensional strain and shear strain. (2002). L'encyclopédie française bénéficie de la licence Wikipedia (GNU). Le service web Alexandria est motorisé par Memodata pour faciliter les recherches sur Ebay. Contents 1 Deformation styles 3. Intraplate extensional tectonics of the Eastern basin‐Range: Inferences on structural style from seismic reflection data, regional tectonics, and thermal‐mechanical models of brittle‐ductile deformation. In terms of plate tectonics … ○   Boggle. ○   Lettris Participer au concours et enregistrer votre nom dans la liste de meilleurs joueurs ! [2] In individual rift segments one polarity (i.e. Nature, 294, 410-414. Tuttle, M.L.W., Charpentier, R.R. We propose a tectonic model that attributes the flare‐up to decompression melting of lithospheric mantle hydrated by slab‐derived fluids, followed by Oligocene upwelling and melting of enriched mantle that was less extensively modified by hydrous fluids. Bull. Obtenir des informations en XML pour filtrer le meilleur contenu. synorogenic extensional collapse models in the Caledonides are at present difficult to prove, whereas impressive postorogenic multi-stage extension is beautifully portrayed. 2. ‘He also questions the stratigraphy of the graben and the timing of north-south extensional tectonics.’ ‘The results may help to reconstruct the orogenic nappe structure that prevailed in the area before the region was reworked by extensional tectonics.’ Trace element characteristics are consistent with a post-collision geotectonic environment testifying to extensional tectonics at the end of the Caledonian era. The Niger Delta Petroleum System: Niger Delta Province, Nigeria, Cameroon, and Equatorial Guinea, Africa. Indexer des images et définir des méta-données. Stressed rocks show varying degrees of strain—the change in the volume and/or shape of the rock because of that stress. constructive) plate boundaries, but are also commonly found within plates, in the form of localized rift zones and extensional basins, and are also frequently associated with the upper plates of subduction zones, as backarc extensional provinces. Such bends are known as releasing bends or extensional stepovers and often form pull-apart basins or rhombochasms. Its detailed struc- ture is not well known. 1981. Changer la langue cible pour obtenir des traductions. Extensional tectonics is concerned with the structures formed by, and the tectonic processes associated with, the stretching of a planetary body's crust or lithosphere. extensional de traduction dans le dictionnaire anglais - français au Glosbe, dictionnaire en ligne, gratuitement. The extension of a term is the set of objects that that term denotes. Back-arc basins form behind many subduction zones due to the effects of oceanic trench roll-back which leads to a zone of extension parallel to the island arc. Recent Examples on the Web The team only found evidence of extensional features—both ancient and modern—which suggests that a short, violent birth could have given way to an early ocean. About Cookies, including instructions on how to turn off cookies if you wish to do so. Small faults are those that are limited to a single rock body and generally confined to the seismogenic layer. Transfer fault 5. An extensional fault is a fault that vertically thins and horizontally extends portions of the Earth's crust and/or lithosphere. L'encyclopédie française bénéficie de la licence Wikipedia (GNU). In most cases such a … (adjective) The aim is to assess the structural geometries and hence the mechanisms of continental extensional tectonics. Wikipedia Definition Extensional tectonics is concerned with the structures formed by, and the tectonic processes associated with, the stretching of a planetary body's crust or lithosphere., Extensional tectonics is concerned with the structures formed by, and the tectonic processes associated with, the stretching of a planetary body's crust or litho. The inboard part of the sedimentary prism is affected by extensional faulting, balanced by outboard shortening. Toutes les traductions de extensional fault, dictionnaire et traducteur pour sites web. (adjective) The aim is to assess the structural geometries and hence the mechanisms of continental extensional tectonics. They are characterised by widespread, syntectonic, silicic, and minor basaltic … a left-stepping bend on a sinistral fault, a zone of extension is generated. Large-scale Devonian extension, for example, followed immediately after the end of the Caledonian orogeny particularly in East Greenland and western Norway. Asymmetric slip partitioning in the Sea of Marmara pull-apart: a clue to propagation processes of the North Anatolian Fault? Tous droits réservés. Contents . Areas of extensional tectonics are typically associated with: Rifts are linear zones of localized crustal extension. ], Passive margins above a weak layer develop a specific set of objects that that term denotes stretching..., London, a Zone of extension is beautifully portrayed B., Navarro S.! 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