التفاصيل البيبلوغرافية
| العنوان: |
Geochronology and detrital zircons sources from the Sierra Albarrana Domain (SW Iberian Massif) ; Geocronología y áreas fuente de zircones detríticos del Dominio de Sierra Albarrana (SW Macizo Ibérico) |
| المؤلفون: |
Solis Alulima, Byron, Abati Gómez, Jacobo, López Carmona, Alicia, Gutiérrez Alonso, Gabriel, Fernández Suárez, Javier |
| المصدر: |
GEOGACETA; Vol. 73 (2023): January-June; 71-74 ; Geogaceta; Vol. 73 (2023): Enero-Junio; 71-74 ; 2173-6545 ; 0213-683X |
| بيانات النشر: |
Sociedad Geológica de España |
| سنة النشر: |
2023 |
| المجموعة: |
RECyT (Repositorio Español de Ciencia y Tecnología) |
| مصطلحات موضوعية: |
U-Pb geochronology, Cambro-Ordovician magmatism, maximum depositational age, cadomian orogen, Sierra-Albarrana domain, Geochronology and detrital zircons sources from the Sierra Albarrana Domain, Maximum Despositational Age (MDA), Sierra Albarrana Domain |
| الوصف: |
This study compiles the U-Pb and 40Ar/39Ar geochronology of the metasedimentary, migmatitic and granitic rocks of the Sierra Albarrana Domain, based on data recently published by the authors together 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 middle Cambrian (ca. 511) and U-Pb ages of zoned magmatic and metamorphic 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 evidence a Cambro-Ordovician metamorphic event (ca. 482 Ma) and another 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 Gondwana. The remaining Mesoproterozoic, Paleoproterozoic and Archean zircon grains would have been contributed by Paleoproterozoic basement 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. ; Este estudio recopila la geocronología U-Pb y 40Ar/39Ar de las rocas metasedimentarias, migmatíticas y graníticas del Dominio de Sierra Albarrana, a partir de datos recientemente publicados por los autores en conjunto con otras fuentes bibliográficas. Se discuten las Edades Máximas de depósito (MDA) y las edades de los eventos magmáticos y metamórficos. Las MDA sugieren que este dominio se depositó durante el Cámbrico medio (ca. 511) y las edades U-Pb en circones magmá- ticos y metamórficos zonados indican que el principal evento tecto- no-magmático es del Cámbrico tardío (emplazamiento del granito; 481 ± 2 Ma) al Ordovícico temprano (migmatización; 478 ± 2 Ma). Las edades ... |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
application/pdf |
| اللغة: |
Spanish; Castilian |
| Relation: |
https://recyt.fecyt.es/index.php/geogaceta/article/view/95417/72914; https://recyt.fecyt.es/index.php/geogaceta/article/view/95417 |
| الاتاحة: |
https://recyt.fecyt.es/index.php/geogaceta/article/view/95417 |
| Rights: |
Derechos de autor 2023 Geogaceta |
| رقم الانضمام: |
edsbas.ED4AC59 |
| قاعدة البيانات: |
BASE |