FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2014281297> ?p ?o ?g. }

• W2014281297 endingPage "58" @default.
• W2014281297 startingPage "43" @default.
• W2014281297 abstract "Abstract U–Pb LA-ICP-MS analyses on zircon extracted from felsic ignimbrites and sandstones of the Bas Draâ succession (BDS) constrain the post Pan-African evolution in the Anti-Atlas (AA) at the northern margin of Gondwana. The 2000-m-thick Ediacaran BDS consists of four volcanic units including: (i) rhyolitic ignimbrite sheets (AO I); (ii) high-silica andesitic and rhyolitic lavas (AO II); (iii) silica-poor lava and pyroclastics (AO III); and (iv) rhyolitic lava dome complexes (AO IV). AO III is dominated by basaltic and andesitic lava and it contains at least three sandstone lenses. The BDS is capped by an angular unconformity, which is defined by sedimentary rocks of the Adoudou Formation of the Taroudant Group. The U–Pb data set (99 zircon grains with 90–110% concordance) from the ignimbrite yields an age of 565 ± 6 Ma (564.8 ± 5.6 Ma), interpreted as the crystallization age, which represents the early volcanic activity in the BDS. For the upper BDS, maximum ages of ca. 552 and ca. 541 Ma are indicated by U–Pb ages of detrital zircons extracted from sandstone. These age constraints confine the BDS to the Upper Ouarzazate Supergroup. Most detrital-zircon ages (three sandstone samples with 367 zircon grains analyzed) fall in the range of ca. 606−541 Ma. This main Ediacaran peak is interpreted to have been derived from the post Pan-African magmatic complexes surrounding the West African Craton (WAC). Secondary age peaks at ca. 652 Ma and ca. 655 Ma are inferred to originate from Early to Late Pan-African magmatism of the Anti-Atlas region. Due to the complete absence of pre-Neoproterozoic zircon ages, our data set is interpreted to indicate a large voluminous volcanic episode that covered the Palaeoproterozoic and Cryogenian basement or the river system was confined to the BDS basin. Facies and provenance analyses of BDS sandstones indicate that the detrital input was mostly locally derived, with a minor amount from an external source. In addition, large peaks of older zircon ages are recognized only on the lower sandstone lens (BD 86, AOIII). Thus, the drainage system was large within the lower part and became more localized at the end of BDS evolution. The maximum depositional age for the zircons separated from the uppermost AO III sandstone lens (541 Ma) shifts the Precambrian–Cambrian boundary down from the Lower Adoudou Formation, as proposed by previous studies, to the uppermost Ouarzazate Supergroup or to the hiatus between both units. The volcanic activity within the BDS is linked to a transtensional regime that operated along the Gondwana margin during the Ediacaran. The BDS volcanic activity is contemporaneous with the widespread volcanic, volcanoclastic and siliciclastic rocks of Upper Ouarzazate Supergroup." @default.
• W2014281297 created "2016-06-24" @default.
• W2014281297 creator A5030659983 @default.
• W2014281297 creator A5039858005 @default.
• W2014281297 creator A5048714715 @default.
• W2014281297 creator A5048832144 @default.
• W2014281297 creator A5055313905 @default.
• W2014281297 creator A5058498065 @default.
• W2014281297 creator A5068728965 @default.
• W2014281297 date "2015-07-01" @default.
• W2014281297 modified "2023-09-27" @default.
• W2014281297 title "U–Pb zircon ages from volcanic and sedimentary rocks of the Ediacaran Bas Draâ inlier (Anti-Atlas Morocco): Chronostratigraphic and provenance implications" @default.
• W2014281297 cites W1521262137 @default.
• W2014281297 cites W1577861980 @default.
• W2014281297 cites W1966360651 @default.
• W2014281297 cites W1967490232 @default.
• W2014281297 cites W1970793538 @default.
• W2014281297 cites W1982739504 @default.
• W2014281297 cites W1983702051 @default.
• W2014281297 cites W1988770064 @default.
• W2014281297 cites W1994261648 @default.
• W2014281297 cites W1998495735 @default.
• W2014281297 cites W2000845802 @default.
• W2014281297 cites W2001218033 @default.
• W2014281297 cites W2003703699 @default.
• W2014281297 cites W2006983849 @default.
• W2014281297 cites W2007105153 @default.
• W2014281297 cites W2007800468 @default.
• W2014281297 cites W2012368976 @default.
• W2014281297 cites W2013659467 @default.
• W2014281297 cites W2015673067 @default.
• W2014281297 cites W2018188298 @default.
• W2014281297 cites W2019469216 @default.
• W2014281297 cites W2020947542 @default.
• W2014281297 cites W2023477252 @default.
• W2014281297 cites W2028217178 @default.
• W2014281297 cites W2028811452 @default.
• W2014281297 cites W2029013584 @default.
• W2014281297 cites W2029014434 @default.
• W2014281297 cites W2033179214 @default.
• W2014281297 cites W2035698005 @default.
• W2014281297 cites W2035717954 @default.
• W2014281297 cites W2037875071 @default.
• W2014281297 cites W2045244667 @default.
• W2014281297 cites W2045585358 @default.
• W2014281297 cites W2045669678 @default.
• W2014281297 cites W2047290022 @default.
• W2014281297 cites W2050226868 @default.
• W2014281297 cites W2050959825 @default.
• W2014281297 cites W2051219886 @default.
• W2014281297 cites W2055916794 @default.
• W2014281297 cites W2058399625 @default.
• W2014281297 cites W2059356468 @default.
• W2014281297 cites W2059970049 @default.
• W2014281297 cites W2060313404 @default.
• W2014281297 cites W2062168342 @default.
• W2014281297 cites W2063725920 @default.
• W2014281297 cites W2065806869 @default.
• W2014281297 cites W2066718630 @default.
• W2014281297 cites W2067662836 @default.
• W2014281297 cites W2068484815 @default.
• W2014281297 cites W2070142384 @default.
• W2014281297 cites W2072229475 @default.
• W2014281297 cites W2087146945 @default.
• W2014281297 cites W2090094577 @default.
• W2014281297 cites W2093369526 @default.
• W2014281297 cites W2094616558 @default.
• W2014281297 cites W2103932516 @default.
• W2014281297 cites W2108547825 @default.
• W2014281297 cites W2132535847 @default.
• W2014281297 cites W2132746247 @default.
• W2014281297 cites W2137684135 @default.
• W2014281297 cites W2138922135 @default.
• W2014281297 cites W2141398750 @default.
• W2014281297 cites W2145388479 @default.
• W2014281297 cites W2152848429 @default.
• W2014281297 cites W2161029067 @default.
• W2014281297 cites W2345175968 @default.
• W2014281297 doi "https://doi.org/10.1016/j.precamres.2015.03.003" @default.
• W2014281297 hasPublicationYear "2015" @default.
• W2014281297 type Work @default.
• W2014281297 sameAs 2014281297 @default.
• W2014281297 citedByCount "36" @default.
• W2014281297 countsByYear W20142812972016 @default.
• W2014281297 countsByYear W20142812972017 @default.
• W2014281297 countsByYear W20142812972018 @default.
• W2014281297 countsByYear W20142812972019 @default.
• W2014281297 countsByYear W20142812972020 @default.
• W2014281297 countsByYear W20142812972021 @default.
• W2014281297 countsByYear W20142812972022 @default.
• W2014281297 countsByYear W20142812972023 @default.
• W2014281297 crossrefType "journal-article" @default.
• W2014281297 hasAuthorship W2014281297A5030659983 @default.
• W2014281297 hasAuthorship W2014281297A5039858005 @default.
• W2014281297 hasAuthorship W2014281297A5048714715 @default.
• W2014281297 hasAuthorship W2014281297A5048832144 @default.
• W2014281297 hasAuthorship W2014281297A5055313905 @default.
• W2014281297 hasAuthorship W2014281297A5058498065 @default.

• next