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- Mélange abstract "In geology, a mélange is a large-scale breccia, a mappable body of rock characterized by a lack of continuous bedding and the inclusion of fragments of rock of all sizes, contained in a fine-grained deformed matrix. The mélange typically consists of a jumble of large blocks of varied lithologies. Large-scale melanges formed in active continental margin settings generally consist of altered oceanic crustal material and blocks of continental slope sediments in a sheared mudstone matrix. The mixing mechanisms in such settings may include tectonic shearing forces, ductile flow of a water-charged or deformable matrix (such as serpentinite), sedimentary action (such as slumping, gravity-flow, and olistostromal action), or some combination of these. Some larger blocks of rock may be as much as 1 kilometre (0.62 mi) across. Smaller-scale localized mélanges may also occur in shear or fault zones, where coherent rock has been disrupted and mixed by shearing forces.Examples include the Franciscan Formation along the Coast Ranges of central and northern California and the Bay of Islands ophiolite complex in Newfoundland. The Gwna Mélange in the UK extends through Anglesey and the Llŷn Peninsula onto Bardsey Island in North Wales. The Northern Palawan melange distributed in Miniloc Island, west coast of Inabamalaki Island, west coast of El Nido; Cudugman Point on Bacuit Bay, in the islands of the Cuyo Group of Islands. It consists of a jumble of various rock types contained in a matrix of grey-green slaty mudstone and siltstone.Before the advent of plate tectonics in the early 1970s, it was difficult to explain mélanges in terms of known geological mechanisms. A particularly troubling paradox was the occurrence of blueschist blocks (low temperature and high pressure metamorphic rocks) in direct contact with graywacke (a coarse sandstone with lithic fragments) that was deposited in a sedimentary environment. Mélange occurrences are associated with thrust faulted terranes in orogenic belts. A mélange is formed in the accretionary wedge above a subduction zone. The ultramafic ophiolite sequences which have been obducted onto continental crust are typically underlain by a mélange. Both tectonic and sedimentary processes can form mélange. Olistostromes are mélanges formed by gravitational sliding under water, with accumulation of the flow as a semi fluid body without bedding planes.".
- Mélange thumbnail Narooma_Breccia.JPG?width=300.
- Mélange wikiPageExternalLink melange.html.
- Mélange wikiPageExternalLink llyn3.jpg.
- Mélange wikiPageID "2150758".
- Mélange wikiPageLength "4600".
- Mélange wikiPageOutDegree "44".
- Mélange wikiPageRevisionID "661763142".
- Mélange wikiPageWikiLink Accretionary_wedge.
- Mélange wikiPageWikiLink Active_continental_margin.
- Mélange wikiPageWikiLink Anglesey.
- Mélange wikiPageWikiLink Bay_of_Islands,_Newfoundland_and_Labrador.
- Mélange wikiPageWikiLink Bed_(geology).
- Mélange wikiPageWikiLink Breccia.
- Mélange wikiPageWikiLink British_Geological_Survey.
- Mélange wikiPageWikiLink California_Coast_Ranges.
- Mélange wikiPageWikiLink Category:Petrology.
- Mélange wikiPageWikiLink Category:Structural_geology.
- Mélange wikiPageWikiLink Continental_crust.
- Mélange wikiPageWikiLink Continental_margin.
- Mélange wikiPageWikiLink Continental_slope.
- Mélange wikiPageWikiLink English_language.
- Mélange wikiPageWikiLink Franciscan_Assemblage.
- Mélange wikiPageWikiLink Franciscan_Formation.
- Mélange wikiPageWikiLink French_language.
- Mélange wikiPageWikiLink Geology.
- Mélange wikiPageWikiLink Heterogeneous_mixture.
- Mélange wikiPageWikiLink Infinitive.
- Mélange wikiPageWikiLink Llŷn_Peninsula.
- Mélange wikiPageWikiLink Loan_word.
- Mélange wikiPageWikiLink Loanword.
- Mélange wikiPageWikiLink Matrix_(geology).
- Mélange wikiPageWikiLink Melee.
- Mélange wikiPageWikiLink Mixture.
- Mélange wikiPageWikiLink Mudstone.
- Mélange wikiPageWikiLink Mêlée.
- Mélange wikiPageWikiLink Newfoundland_and_Labrador.
- Mélange wikiPageWikiLink Obduction.
- Mélange wikiPageWikiLink Oceanic_crust.
- Mélange wikiPageWikiLink Old_French.
- Mélange wikiPageWikiLink Olistostrome.
- Mélange wikiPageWikiLink Ophiolite.
- Mélange wikiPageWikiLink Orogeny.
- Mélange wikiPageWikiLink Plate_tectonics.
- Mélange wikiPageWikiLink Point_Bonita.
- Mélange wikiPageWikiLink Point_Bonita_Lighthouse.
- Mélange wikiPageWikiLink Science.
- Mélange wikiPageWikiLink Sediment.
- Mélange wikiPageWikiLink Sediment_gravity_flow.
- Mélange wikiPageWikiLink Serpentinite.
- Mélange wikiPageWikiLink Subduction.
- Mélange wikiPageWikiLink Subduction_zone.
- Mélange wikiPageWikiLink Thrust_fault.
- Mélange wikiPageWikiLink Ultramafic.
- Mélange wikiPageWikiLink Ultramafic_rock.
- Mélange wikiPageWikiLink University_of_Alberta.
- Mélange wikiPageWikiLink Wiktionary:disparate.
- Mélange wikiPageWikiLink Wiktionary:lithology.
- Mélange wikiPageWikiLink File:Narooma_Breccia.JPG.
- Mélange wikiPageWikiLinkText "Mélange".
- Mélange wikiPageWikiLinkText "melange".
- Mélange wikiPageWikiLinkText "mélange".
- Mélange hasPhotoCollection Mélange.
- Mélange wikiPageUsesTemplate Template:About.
- Mélange wikiPageUsesTemplate Template:Clarify_span.
- Mélange wikiPageUsesTemplate Template:Convert.
- Mélange wikiPageUsesTemplate Template:More_footnotes.
- Mélange wikiPageUsesTemplate Template:Reflist.
- Mélange wikiPageUsesTemplate Template:Wiktionary.
- Mélange subject Category:Petrology.
- Mélange subject Category:Structural_geology.
- Mélange comment "In geology, a mélange is a large-scale breccia, a mappable body of rock characterized by a lack of continuous bedding and the inclusion of fragments of rock of all sizes, contained in a fine-grained deformed matrix. The mélange typically consists of a jumble of large blocks of varied lithologies. Large-scale melanges formed in active continental margin settings generally consist of altered oceanic crustal material and blocks of continental slope sediments in a sheared mudstone matrix.".
- Mélange label "Mélange".
- Mélange sameAs Tektonische_Mélange.
- Mélange sameAs Mélange.
- Mélange sameAs メランジュ.
- Mélange sameAs მელანჟი.
- Mélange sameAs Mélange_(gesteente).
- Mélange sameAs m.06qj81.
- Mélange sameAs Ofiolitni_melanž.
- Mélange sameAs Melanž_(geológia).
- Mélange sameAs Офиолитски_меланж.
- Mélange sameAs Mélange.
- Mélange sameAs Меланж.
- Mélange sameAs Q1795187.
- Mélange sameAs Q1795187.
- Mélange wasDerivedFrom Mélange?oldid=661763142.
- Mélange depiction Narooma_Breccia.JPG.
- Mélange isPrimaryTopicOf Mélange.