Results 51 to 60 of about 242 (121)

Ediacaran and early-palaeozoic bimodal volcanism in the Ossa-Morena Zone, SW Iberian Massif: New clues for intraplate rifting shortly after the Cadomian Orogeny

Geochemistry
This study focuses on bimodal meta-volcanic rocks present in the Iberian Massif, in the ´Evora-Aracena Metamorphic Belt of the Ossa-Morena Zone (OMZ), near the boundary with the South Portuguese Zone. New petrological, geochemical (whole-rock and Sr–Nd isotopes) and LA-ICP-MS U–Pb zircon geochronology data are presented to track the magmatic evolution ...
Cachapuz, P., Chichorro, Martim Afonso, Bento dos Santos, Telmo, Carvalho, D., Linnemann, Ulf, Zieger-Hofmann, M., Zieger, J., Dantas, E., Santos, R. V., Moita, Patrícia, Beltrame, M., Solá, A. Rita, Díaz-Azpíroz, M., Fernández, C.   +13 more
openaire   +4 more sources

Gondwana accretion tectonics and implications for the geodynamic evolution of eastern Arabia: first structural evidence of the existence of the Cadomian Orogen in Oman (Jabal Akhdar Dome, Central Oman Mountains)

, 2019
The present work describes two early Cambrian folding events within Cryogenian to earliest Cambrian rocks of the western Jabal Akhdar Dome (Central Oman Mountains).
Ivan Callegari
core   +1 more source

Detrital zircon U-Pb ages and source of the late Palaeocene Thanet Formation, Kent, SE England

, 2021
The sources of the Paleocene London Basin marine to fluviodeltaic sandstones are currently unclear. High analysis number detrital zircon U-Pb age investigation of an early-mid Thanetian marine sand from East Kent, reveals a large spread of zircon age ...
Baykal, Yunus, Stevens, Thomas,, Stevens, Thomas, Baykal, Yunus,   +3 more
core   +1 more source

Zircon U‐Pb‐He Double Dating of Modern Sands From the Inn River Catchment: Assessing Resolution and Potential in a Complex Orogenic Setting

Journal of Geophysical Research: Earth Surface, Volume 129, Issue 1, January 2024.
Abstract Zircon U‐Pb‐He double dating (ZDD) provides the opportunity to derive high temperature crystallization ages and low temperature cooling ages from the very same mineral grain, making it especially attractive for zircon provenance studies. We present the combination of in situ detrital zircon U‐Pb‐He double dating and Raman spectroscopy‐based ...
I. Dunkl, F. Malis, N. K. Lünsdorf, J. Schönig, H. von Eynatten   +4 more
wiley   +1 more source

Petrogenesis and tectonic setting of Cadomian felsic igneous rocks, Sandikli area of the western Taurides, Turkey

, 2006
In the Sandikli (Afyon) region, western Taurides, the Late Proterozoic rocks of the Sandikli basement complex are composed of low-grade meta-sedimentary rocks (Guvercinoluk Formation) intruded by felsic rocks (Kestel Cayi Porphyroid Suite, KCPS).
Guersu, Semih, Goencueoglu, M. Cemal
core   +1 more source

The Merida Massif,a cadomian volcanic arc reactivates into Hercynic Orogeny

, 1998
The Merida igneous outcrops are situated in the Obejo-Valsequillo-Puebla de la Reina Domain (DOVPR) of the northern Ossa-Morena Zone (Iberian Massif). This massif is composed by plutonic and volcanic rocks.
Bandrés, A., Gonzalo, J. C., Carracedo Sánchez, Manuel, Eguiluz, Luis   +3 more
core  

Pre-Variscan tectonic setting of the south margin of Armorica: Insights from detrital zircon ages distribution and Hf isotopic composition of the St-Georges-sur-Loire Unit (S. Armorican Massif, France)

, 2019
International audienceThe Armorican Massif experienced a poly-orogenic evolution, represented by the Neoproterozoic Cadomian and the Devonian-Carboniferous Variscan tectonothermal events.
Li, Xian-Hua, Ji, Wenbin, Faure, Michel, Lin, Wei   +3 more
core   +1 more source

Large-scale geological structures of the Egyptian Nubian Shield. [PDF]

Sci Rep, 2023
Hamimi Z, Eldosouky AM, Hagag W, Kamh SZ.   +3 more
europepmc   +1 more source

Non-coaxial deformation of foreland basement involved in a fold-and-thrust belt: a strain partitioning approach to the Eastern Variscan orogen. [PDF]

Sci Rep, 2023
Mareček L, Melichar R, Černý J, Schnabl P, Hrdličková K, Buriánek D.   +5 more
europepmc   +1 more source

Phanerozoic flooding of North America and the Great Unconformity. [PDF]

Proc Natl Acad Sci U S A, 2023
Tasistro-Hart AR, Macdonald FA.
europepmc   +1 more source