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oai:docta.ucm.es:20.500.14352/885182025-03-18T15:08:24Zcom_20.500.14352_14col_20.500.14352_15

Solís Alulima, Byron Ernesto Abati Gómez, Jacobo López Carmona, Alicia Gutiérrez Alonso, Gabriel Fernández Suárez, Javier 2023-10-31T19:02:22Z 2023-10-31T19:02:22Z 2023 Solis Alulima, B., Abati Gómez, J., López Carmona, A., Gutiérrez Alonso, G., & Fernández Suárez, J. (2023). Geocronología y áreas fuente de zircones detríticos del Dominio de Sierra Albarrana (SW Macizo Ibérico). Geogaceta, 73, 71–74. https://doi.org/10.55407/geogaceta95417 0213-683X 10.55407/geogaceta95417 https://hdl.handle.net/20.500.14352/88518 2173-6545 https://doi.org/10.55407/geogaceta95417 https://recyt.fecyt.es/index.php/geogaceta/article/view/95417/72914 This study compiles the U-Pb and 40Ar/39Ar geochronology of the metasedimentary, migmatitic and granitic rocks of the Sierra Alba-rrana Domain, based on data recently published by the authors to-gether with other bibliographic sources. Maximum depositional ages (MDA) and magmatic and metamorphic events ages are discussed.MDAs suggest that this domain was deposited during the midd-le Cambrian (ca. 511) and U-Pb ages of zoned magmatic and me-tamorphic zircon grains indicate that the main tectono-magmatic event is late Cambrian (granite emplacement; 481 ± 2 Ma) to early Ordovician (migmatization; 478 ± 2 Ma). The 40Ar-39Ar ages eviden-ce a Cambro-Ordovician metamorphic event (ca. 482 Ma) and ano-ther related to the Variscan Orogeny (ca. 337-392 Ma). The most important detrital source corresponds to a Cambrian magmatic event (535-515 Ma), probably developed during the initial episodes of the early Paleozoic rifting affecting the N margin of Gond-wana. The remaining Mesoproterozoic, Paleoproterozoic and Archean zircon grains would have been contributed by Paleoproterozoic base-ment and/or older continental crust recycled in the western sections of the Gondwana margin. We suggest that this domain is probably part of the autochthonous section of the Central Iberian Zone (CIZ) and derived from the Saharan Metacraton and/or Tuareg Shield. eng http://creativecommons.org/licenses/by/4.0/ open access Attribution 4.0 International Geochronology and detrital zircons sources from the Sierra Albarrana Domain (SW Iberian Massif) journal article