Matches in SemOpenAlex for { <https://semopenalex.org/work/W2018585988> ?p ?o ?g. }
- W2018585988 endingPage "350" @default.
- W2018585988 startingPage "312" @default.
- W2018585988 abstract "The Middle to Upper Triassic redbeds at the base of the Ghomaride and Internal ‘Dorsale Calcaire’ Nappes in the Rifian sector of the Maghrebian Chain have been studied for their sedimentological, petrographic, mineralogical and chemical features. Redbeds lie unconformably on a Variscan low-grade metamorphic basement in a 300 m thick, upward fining and thinning megasequence. Successions are composed of predominantly fluvial red sandstones, with many intercalations of quartzose conglomerates in the lower part that pass upwards into fine-grained micaceous siltstones and massive mudstones, with some carbonate and evaporite beds. This suite of sediments suggests that palaeoenvironments evolved from mostly arenaceous alluvial systems (Middle Triassic) to muddy flood and coastal plain deposits. The successions are characterized by local carbonate and evaporite episodes in the Late Triassic. The growth of carbonate platforms is related to the increasing subsidence (Norian-Rhaetian) during the break-up of Pangea and the earliest stages of the Western Tethys opening. Carbonate platforms became widespread in the Sinemurian. Sandstones are quartzose to quartzolithic in composition, testifying a recycled orogenic provenance from low-grade Palaeozoic metasedimentary rocks. Palaeoweathering indices (Chemical Index of Alteration, Chemical Index of Weathering and Plagioclase Index of Alteration) suggest both a K-enrichment during the burial history and a source area that experienced intense weathering and recycling processes. These processes were favoured by seasonal climatic alternations, characterized by hot, episodically humid conditions with a prolonged dry season. These climatic alternations produced illitization of silicate minerals, iron oxidation and quartz-rich red sediments in alluvial systems. The estimated burial temperature for the continental redbeds is in the range of 100 to 160 °C with lithostatic/tectonic loading of ca 4 to 6 km. These redbeds can be considered as regional petrofacies that mark the onset of the continental rift valley stage in the Western Pangea (Middle Triassic) before the opening of the western part of Tethys in the Middle Jurassic. The studied redbeds and the coeval redbeds of many Alpine successions (Betic, Tellian and Apenninic orogens) show a quite similar history; they identify a Mesomediterranean continental block originating from the break-up of Pangea, which then played an important role in the post-Triassic evolution of the Western Mediterranean region." @default.
- W2018585988 created "2016-06-24" @default.
- W2018585988 creator A5000911947 @default.
- W2018585988 creator A5006557047 @default.
- W2018585988 creator A5023007809 @default.
- W2018585988 creator A5056361581 @default.
- W2018585988 creator A5060232226 @default.
- W2018585988 creator A5063473044 @default.
- W2018585988 creator A5064928488 @default.
- W2018585988 creator A5071293227 @default.
- W2018585988 creator A5090261408 @default.
- W2018585988 date "2010-02-01" @default.
- W2018585988 modified "2023-10-17" @default.
- W2018585988 title "Depositional systems, composition and geochemistry of Triassic rifted-continental margin redbeds of the Internal Rif Chain, Morocco" @default.
- W2018585988 cites W141993106 @default.
- W2018585988 cites W1539037061 @default.
- W2018585988 cites W1589732325 @default.
- W2018585988 cites W1602490592 @default.
- W2018585988 cites W1907005196 @default.
- W2018585988 cites W196508073 @default.
- W2018585988 cites W1969290325 @default.
- W2018585988 cites W1975641630 @default.
- W2018585988 cites W1976696102 @default.
- W2018585988 cites W1980745955 @default.
- W2018585988 cites W1990169490 @default.
- W2018585988 cites W1990594389 @default.
- W2018585988 cites W1991608310 @default.
- W2018585988 cites W1996292225 @default.
- W2018585988 cites W1996585223 @default.
- W2018585988 cites W2007523438 @default.
- W2018585988 cites W2014135316 @default.
- W2018585988 cites W2016223358 @default.
- W2018585988 cites W2018858924 @default.
- W2018585988 cites W2021983379 @default.
- W2018585988 cites W2029401070 @default.
- W2018585988 cites W2033705653 @default.
- W2018585988 cites W2033912086 @default.
- W2018585988 cites W2035855420 @default.
- W2018585988 cites W2036057044 @default.
- W2018585988 cites W2039527127 @default.
- W2018585988 cites W2045965446 @default.
- W2018585988 cites W2051598312 @default.
- W2018585988 cites W2055571865 @default.
- W2018585988 cites W2059245554 @default.
- W2018585988 cites W2066663496 @default.
- W2018585988 cites W2067628429 @default.
- W2018585988 cites W2072010825 @default.
- W2018585988 cites W2075995243 @default.
- W2018585988 cites W2078140135 @default.
- W2018585988 cites W2078842035 @default.
- W2018585988 cites W2079528230 @default.
- W2018585988 cites W2081046790 @default.
- W2018585988 cites W2082237174 @default.
- W2018585988 cites W2085134276 @default.
- W2018585988 cites W2089502158 @default.
- W2018585988 cites W2093375266 @default.
- W2018585988 cites W2096598782 @default.
- W2018585988 cites W2104139642 @default.
- W2018585988 cites W2114440458 @default.
- W2018585988 cites W2116033899 @default.
- W2018585988 cites W2118871222 @default.
- W2018585988 cites W2120162798 @default.
- W2018585988 cites W2132223903 @default.
- W2018585988 cites W2134308193 @default.
- W2018585988 cites W2152273010 @default.
- W2018585988 cites W2154322359 @default.
- W2018585988 cites W2155749062 @default.
- W2018585988 cites W2164305081 @default.
- W2018585988 cites W2170379738 @default.
- W2018585988 cites W2183793512 @default.
- W2018585988 cites W2320758035 @default.
- W2018585988 cites W2328185377 @default.
- W2018585988 cites W2563452930 @default.
- W2018585988 cites W4236924214 @default.
- W2018585988 cites W4250980847 @default.
- W2018585988 cites W88534543 @default.
- W2018585988 doi "https://doi.org/10.1111/j.1365-3091.2009.01080.x" @default.
- W2018585988 hasPublicationYear "2010" @default.
- W2018585988 type Work @default.
- W2018585988 sameAs 2018585988 @default.
- W2018585988 citedByCount "61" @default.
- W2018585988 countsByYear W20185859882012 @default.
- W2018585988 countsByYear W20185859882013 @default.
- W2018585988 countsByYear W20185859882014 @default.
- W2018585988 countsByYear W20185859882015 @default.
- W2018585988 countsByYear W20185859882016 @default.
- W2018585988 countsByYear W20185859882017 @default.
- W2018585988 countsByYear W20185859882018 @default.
- W2018585988 countsByYear W20185859882019 @default.
- W2018585988 countsByYear W20185859882020 @default.
- W2018585988 countsByYear W20185859882021 @default.
- W2018585988 countsByYear W20185859882022 @default.
- W2018585988 countsByYear W20185859882023 @default.
- W2018585988 crossrefType "journal-article" @default.
- W2018585988 hasAuthorship W2018585988A5000911947 @default.
- W2018585988 hasAuthorship W2018585988A5006557047 @default.
- W2018585988 hasAuthorship W2018585988A5023007809 @default.
- W2018585988 hasAuthorship W2018585988A5056361581 @default.