ORCID Profile
0000-0002-4429-7905
Current Organisation
The University of Edinburgh
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Cambridge University Press (CUP)
Date: 21-09-2007
DOI: 10.1017/S0016756807003858
Abstract: Dating the pre-Middle Ordovician metavolcanic rocks and metagranites of the Ollo de Sapo Domain has, historically, been difficult because of the small compositional variation, the effects of the Variscan orogeny and, as revealed in this paper, the unusually high fraction of inherited zircon components. The first reliable zircon data (U–Pb ion microprobe and Pb–Pb stepwise evaporation) indicate that the Ollo de Sapo volcanism spanned 495±5 Ma to 483±3 Ma, and was followed by the intrusion of high-level granites from 483±3 Ma to 474±4 Ma. In both metavolcanic rocks and metagranites, no less than 70–80% of zircon grains are either totally Precambrian or contain a Precambrian core overgrown by a Cambro-Ordovician rim. About 80–90% of inherited zircons are Early Ediacaran (602–614 Ma) and derived from calc-alkaline intermediate to felsic igneous rocks generated at the end of the Pan-African arc–continent collision. In the Villadepera region, located to the west, both the metagranites and metavolcanic rocks also contain Meso-Archaean zircons (3.0–3.2 Ga) which ultimately originated from the West African Craton. In the Hiendelaencina region, located to the east, both the metagranites and metavolcanic rocks lack Meso-Archaean zircons, but they have two different inherited zircon populations, one Cryogenian (650–700 Ma) and the other Tonian (850–900 Ma), which suggest older-than-Ediacaran additional island-arc components. The different proportion of source components and the marked variation of the 87 Sr/ 86 Sr init. suggest, at least tentatively, that the across-arc polarity of the remnants of the Pan-African arc of Iberia trended east–west (with respect to the current coordinates) during Cambro-Ordovician times, and that the passive margin was situated to the west.
Publisher: Elsevier BV
Date: 09-2019
Publisher: Geological Society of America
Date: 10-2015
DOI: 10.1130/G37059.1
Publisher: Elsevier BV
Date: 11-2012
Publisher: Geological Society of London
Date: 09-2006
Publisher: Geological Society of America
Date: 14-04-2015
DOI: 10.1130/B31197.1
Publisher: Elsevier BV
Date: 10-2018
Publisher: Springer Science and Business Media LLC
Date: 27-03-2015
Publisher: Informa UK Limited
Date: 23-11-2018
Publisher: Elsevier BV
Date: 05-2012
Publisher: Elsevier BV
Date: 12-2009
Publisher: Geological Society of America
Date: 29-11-2018
DOI: 10.1130/B31761.1
Publisher: Wiley
Date: 25-11-2019
DOI: 10.1111/JMG.12514
Publisher: Springer Science and Business Media LLC
Date: 02-11-2015
DOI: 10.1038/NG.3431
Publisher: Elsevier BV
Date: 05-2020
Publisher: Elsevier BV
Date: 11-2017
Publisher: Springer Science and Business Media LLC
Date: 05-01-2021
Publisher: Elsevier BV
Date: 08-2019
Publisher: Oxford University Press (OUP)
Date: 18-10-2007
Publisher: Geological Society of America
Date: 02-2015
DOI: 10.1130/G36231.1
Publisher: Wiley
Date: 12-03-2020
DOI: 10.1111/TER.12460
Publisher: Elsevier BV
Date: 11-2018
Publisher: American Geophysical Union (AGU)
Date: 07-2020
DOI: 10.1029/2019TC005976
Publisher: Elsevier BV
Date: 2019
Publisher: University of Chicago Press
Date: 03-2009
DOI: 10.1086/595017
Publisher: Elsevier BV
Date: 09-2011
Publisher: Elsevier BV
Date: 12-2017
Publisher: Wiley
Date: 05-07-2010
Publisher: Springer Science and Business Media LLC
Date: 27-05-2012
Publisher: Elsevier BV
Date: 06-2019
Publisher: Mineralogical Society of America
Date: 04-2017
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 03-2021
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Cristina Talavera.