Results 41 to 50 of about 871 (186)

Cadomian Geological Heritage of Abrantes area

open access: yes, 2023
Resumo alargadoSUMMARY: A well preserved Cadomian basement crops out at the contact between the Ossa Morena Zone and the Central Iberia Zone near Abrantes area. The magmatic and metamorphic activity recorded in this area indicates the existence of a long‐
Alves, Paulo   +2 more
core  

Data for: Repeated Magmatic Build-up and Deep "Hot Zones" in Continental Evolution: the Cadomian Crust of Iran

open access: yes, 2020
These files include mineral geochemistry, bulk rock major, trace and isotope data, zircon U-Pb age data and zircon Lu-Hf isotopes from all Cadomian rocks in ...
Shafaii Moghadam, H
core   +2 more sources

Geochronology and detrital zircons sources from the Sierra Albarrana Domain (SW Iberian Massif)

open access: yesGeogaceta, 2023
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.
Byron Solis Alulima   +4 more
doaj   +1 more source

Foreword: The Ediacaran-early Palaeozoic Cadomian zircon province fringing Northwest Gondwana

open access: yesGeologica Acta, 2023
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J. Javier Álvaro   +2 more
doaj  

Cadomian ophiolites in the Ossa-Morena Complex: where and why

open access: yes, 2022
Abstract presented in a ...
Arenas, Ricardo   +8 more
openaire   +3 more sources

Laurasian Seaway History During the Early Jurassic From Quantitative Mineralogy and Detrital Zircon Dating

open access: yesPaleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract The Laurasian Seaway comprises a N‐S oriented trans‐Pangaean corridor linking Tethys to the Boreal Sea during the Jurassic, and direction of water flow has been the subject of considerable debate. The Llanbedr (Mochras Farm) borehole, Cardigan Bay Basin, Wales, is a uniquely informative record that comprises an expanded deep‐marine silty ...
M. Jiang   +7 more
wiley   +1 more source

Jadeite in Continental Subduction: Its Preservation, Breakdown and Pseudomorphic Replacement in Erzgebirge UHP Gneisses

open access: yesJournal of Metamorphic Geology, Volume 44, Issue 5, Page 376-393, June 2026.
ABSTRACT The absence of jadeite in regions where subduction of continental crust has been documented by other high‐pressure (HP) or ultrahigh‐pressure (UHP) minerals is striking. This study presents only the second discovery of jadeite in the crystalline rocks of the Erzgebirge, a region known for its occurrences of microdiamond, coesite and omphacite ...
Ondrej Lexa   +3 more
wiley   +1 more source

The Tectonic Map and Structural Provinces of the Late Neoproterozoic Egyptian Nubian Shield: Implications for Crustal Growth of the Arabian–Nubian Shield (East African Orogen)

open access: yesFrontiers in Earth Science, 2022
The Late Neoproterozoic Egyptian Nubian Shield (ENS) has attracted increasing attention since the establishment of the Egyptian Geological Survey and Mining Authority (EGSMA (1896)), which conducted the first mapping.
Zakaria Hamimi   +5 more
doaj   +1 more source

Tectonic exhumation of the Central Alps recorded by detrital zircon in the Molasse Basin, Switzerland [PDF]

open access: yesSolid Earth, 2020
Eocene to Miocene sedimentary strata of the Northern Alpine Molasse Basin in Switzerland are well studied, yet they lack robust geochronologic and geochemical analysis of detrital zircon for provenance tracing purposes. Here, we present detrital zircon U–
O. A. Anfinson   +5 more
doaj   +1 more source

New magnetotelluric data through the boundary between the Ossa Morena and Centroiberian Zones [PDF]

open access: yes, 2005
The south-western part of the Iberian Peninsula, including the southern branch of the Iberian Massif, has recently been the subject of several magnetotelluric (MT) studies.
Almeida, E.   +13 more
core   +1 more source

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