Results 51 to 60 of about 871 (186)

Near‐Synchronous Cambrian Evolution of the Transbrasiliano‐Kandi‐4°50′ Shear Zone in South America and Africa

Terra Nova, Volume 38, Issue 2, Page 97-105, April 2026.
ABSTRACT The Transbrasiliano‐Kandi‐4°50′ (TK4) shear zone in western Gondwana crosscuts South America and NW Africa for at least 6000 km. Despite its impressive size, the timing of the main episode of dextral ductile shearing is uncertain. We present detailed in situ multi‐mineral geochronology of mylonites from both Brazil and Algeria supporting that ...
F. A. Caxito, B. V. Ribeiro, F. Alkmim, A. Deramchi, C. L. Kirkland   +4 more
wiley   +1 more source

Subduction-driven shortening and differential exhumation in a Cadomian accretionary wedge: The Teplá?Barrandian unit, Bohemian Massif [PDF]

, 2010
2. English abstract This doctoral thesis is focused on analysis of tectonic deformations a geodynamic evolution of Neoproterozoic and Lower Paleozoic rocks of the Teplá−Barrandian Unit along the northwestern margin of the Prague basin (central Bohemian ...
Hajná, Jaroslava
core  

Evolution and Provenance of the Polish Rotliegend in the Southern Permian Basin

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The Southern Permian Basin (SPB) has been extensively explored for ore deposits. However, a comprehensive evaluation of the remaining copper potential, specifically for sediment‐hosted stratiform copper system, remains lacking. This study applies goSPL, an open‐source landscape and stratigraphic evolution model, to reconstruct the Permian rift‐
Beatriz Hadler Boggiani, Claire Mallard, Tristan Salles, Nicholas Atwood   +3 more
wiley   +1 more source

Petrography and geochemistry of siliciclastic sedimentary rocks of the Padeha Formation in Khoshyeilagh section; Eastern Alborz; implication for provenance [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2019
In this study, petrography and geochemistry of the sandstones and shales of Padeha Formation in Khoshyeilagh section in Eastern Alborz have been used to obtain more information on their provenance.
Mehdi Hosseini, Mahdi Jafarzadeh, Ali Taheri, hamed zanmoghaddam   +3 more
doaj   +1 more source

The Cadomian Orogeny and the opening of the Rheic Ocean: The diacrony of [PDF]

, 2008
Cadomian orogenic processes and their continuum to the opening of the Rheic Ocean were modeled by making use of new LA-ICP-MS U–Pb ages from detrital zircons of sedimentary rocks of Late Neoproterozoic (Ediacaran) and Cambro-Ordovician sediments of the ...
Linnemann, Ulf, Jeffries, Teresa, Drost, Kerstin, Gerdes, Axel, Pereira, M. Francisco   +4 more
core  

Cadomian crust of Eastern Iran: evidence from the Tapeh Tagh granitic gneisses

, 2019
Late Neoproterozoic to Early Cambrian (Cadomian) magmatic rocks are abundant in Iran, but their occurrence in east-central Iran is voluminous. This paper reports, for the first time, on the Cadomian rocks of the eastern Iranian region known as Tapeh Tagh
Habib Mollai (7441760), Habib Allah Torshizian (7441766), Rahim Dabiri (7441763), Wei Wang (17594), Georgia Pe-Piper (7016807)   +4 more
core   +1 more source

Inspecting zircon populations of the Iberian Pyrite Belt: tracking the Cadomian record of the South Portuguese Zone [PDF]

, 2021
AIMS OF THE MEETING: The scientific sessions will be focused on the Pan-African and Cadomian Orogenies recorded in North Africa and western Europe across the Ediacaran Cambrian transition and its bearing in the assembly and demise of Pannotia ...
Solá, A. Rita, Lains Amaral, João, M. Bento dos Santos, Telmo   +2 more
core  

Restoring the Missing Late Cretaceous Arc of Iran

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Persistent arc magmatism archives fluid transport and mantle partial melting in subduction zones. However, arc magmatism often exhibits different magmatic records along the strike, as seen in the Tethyan orogenic belt. During Neo‐Tethys subduction under Iran, there was pulsed arc magmatism with Middle Jurassic and Eocene magmatic flare‐ups ...
Yiyang Lei, Yang Chu, Mark B. Allen, Wei Lin, Bo Wan, Ling Chen, Morteza Talebian, Guangyao Xin, Tanjie Liu, Yilin Guo, Lin Guo   +10 more
wiley   +1 more source

U-Pb Zircon Age Constraints on the Paleozoic Sedimentation, Magmatism and Metamorphism of the Sredogriv Metamorphics, Western Balkan Zone, NW Bulgaria

Geosciences
The Sredogriv greenschist facies rocks belong to the Western Balkan Zone in northwestern Bulgaria. The low-grade rocks consist of clastic-tuffaceous precursors and presumably olistostromic magmatic bodies. We present U-Pb LA-ICP-MS zircon age constraints
Nikolay Bonev, Petyo Filipov, Tsvetomila Vladinova, Tanya Stoylkova, Hristiana Georgieva, Svetoslav Georgiev, Hristo Kiselinov, Lyubomirka Macheva   +7 more
doaj   +1 more source

U-Pb ZIRCON DATING OF MIDDLE EOCENE CLASTIC ROCKS FROM THE GERCUS MOLASSE, NE IRAQ: NEW CONSTRAINTS ON THEIR PROVENANCE, AND TECTONIC EVOLUTION

Iraqi Geological Journal, 2021
The provenance of Middle Eocene clastic rock from the Gercus Molasse, NE Iraq was determined by detrital zircon (DZ) U-Pb geochronology. The Gercus Molasse in the Iraqi segment of the north-eastern Zagros Thrust Zone provides an ideal example of foreland
Aziz, Nabaz
doaj   +1 more source