RT Journal Article
T1 Hf isotopes in detrital zircon grains of the Sierra Albarrana Domain (SW Iberian Massif): Eburnean v. Archean basement signatures
A1 Solís Alulima, Byron Ernesto
A1 Abati Gómez, Jacobo
A1 López Carmona, Alicia
A1 Gutiérrez Alonso, Gabriel
A1 Fernández Suárez, Javier
A1 Stockli, Daniel F.
AB This study presents Lu–Hf data on detrital zircon grains from the Lower Paleozoic metasedimentary successions of the Sierra Albarrana Domain (SW Iberian Massif). We provide new information about their origin, record of continental crustal evolution and geological affinity. Previous detrital zircon U–Pb data in this terrane reveal two main age populations, with age peaks at c. 595 Ma and c. 1.90 Ga. The Ediacaran events are interpreted to represent a magmatic arc with input of juvenile magmas intruding into the Eburnean basement of Gondwana, and probably mixing with it. The different evolutionary stages of the arc were probably linked to the Cadomian Orogeny during Neoproterozoic–earliest Cambrian times. The Paleoproterozoic zircon population corresponds to the Eburnean Orogeny. The magmas derived from an Eburnean depleted mantle partly intruded an older basement, leading to an incipient mixing process. εHf isotopic compositions indicate a possible affinity with the Central Iberian Zone, suggesting a common geological setting during Ediacaran–Cambrian times but different settings during the Paleoproterozoic.
PB The Geological Society
SN 0016-7649
YR 2023
FD 2023-03-24
LK https://hdl.handle.net/20.500.14352/87857
UL https://hdl.handle.net/20.500.14352/87857
LA eng
NO Ministerio de Ciencia e Innovación
NO Universidad Complutense de Madrid
NO Fundación Banco Santander
DS Docta Complutense
RD 9 abr 2025