Results 21 to 30 of about 13,521 (272)

The Zona Transversal Domain of the Borborema Province, northeastern Brazil: Synthesis of the Archean to Cambrian evolution, and new tectono-stratigraphic interpretation

Journal of the Geological Survey of Brazil, 2023
The Transversal Zone Domain (TZD) is the central segment of the Borborema Province, with its limits given by the Patos and Pernambuco shear zones, to the north and south respectively.
Frank Gurgel Santos, Camila Basto, Felipe Lima, Roberta Brasilino, Vladimir Medeiros, Débora Morais, Tercyo Pinéo, Jocilene Santana   +7 more
doaj   +1 more source

Noroeste da África – Nordeste do Brasil (Província Borborema) Ensaio comparativo e problemas de correlação [PDF]

Geologia USP. Série Científica, 2001
A correlação geológica entre as porções Noroeste da África e Nordeste do Brasil enfrentam ainda uma série de problemas, de natureza virtual e real. A falta de um Projeto Internacional de Correlação Geológica (PICG) voltada para este tema é um aspecto ...
Allen H. Fetter, William R. Van Schmus, Benjamim B. Brito Neves   +2 more
doaj   +3 more sources

Thermochronology and U–Pb dating of detrital zircons from the Demerara Plateau (French Guiana‐Suriname): Implications for the provenance of the Early Cretaceous syn‐rift sedimentation

Basin Research, Volume 35, Issue 4, Page 1386-1406, August 2023., 2023
Microfacies, fission‐track analysis and U–Pb dating of detrital zircons shed light on the provenance of Early Cretaceous sandstones dredged on the northern margin of the Demerara Plateau, offshore French Guiana and Suriname, revealing the sediment routing system that prevailed through the Equatorial Atlantic rifting.
Igor Girault, Christophe Basile, Matthias Bernet, Jean‐Louis Paquette, Arnauld Heuret, Lies Loncke, Ewald Poetisi, Mélanie Balvay   +7 more
wiley   +1 more source

Estimating Geomagnetically Induced Currents in Southern Brazil Using 3‐D Earth Resistivity Model

Space Weather, Volume 21, Issue 4, April 2023., 2023
Abstract Geomagnetically induced currents (GICs) result from the interaction of the time variation of ground magnetic field during a geomagnetic disturbance with the Earth's deep electrical resistivity structure. In this study, we simulate induced GICs in a hypothetical representation of a low‐latitude power transmission network located mainly over the
Karen V. Espinosa, Antonio L. Padilha, Livia R. Alves, Adam Schultz, Anna Kelbert   +4 more
wiley   +1 more source

Protracted Thermal Evolution of a Migmatitic Terrane as Revealed by Multiple Geochronometers From the Retro‐Arc of the Early Paleozoic Famatinian Orogen in NW Argentina

Tectonics, Volume 42, Issue 3, March 2023., 2023
Abstract U‐Pb dates of zircon, monazite, and titanite combined with trace element composition, allows characterization of the thermal evolution of the migmatitic Agua del Sapo complex. This complex comprises Al‐rich and Ca‐rich metasedimentary rocks with a detrital zircon maximum depositional age of 550 Ma.
Pablo Farias, Roberto F. Weinberg, Alfonso Sola, Melanie Finch   +3 more
wiley   +1 more source

The interplay between basement fabric, rifting, syn‐rift folding, and inversion in the Rio do Peixe Basin, NE Brazil

Basin Research, Volume 35, Issue 1, Page 61-85, February 2023., 2023
3D evolutionay diagram showing the evolution of the Rio do Peixe Basin and the relationship between the Precambrian basement fabric (a) with the nucleation and orientation of the main syn‐rift normal faults (b) and the subsequent syn‐rift folding (c) over steps and/or curvatures in normal fault geometries.
Leonardo M. Pichel, Alex F. Antunes, Haakon Fossen, Barbara F. Rapozo, Emma Finch, Valeria C. Córdoba   +5 more
wiley   +1 more source

Tectonic overview of the West Gondwana margin [PDF]

, 2008
The oceanic southern margin of Gondwana, from southern South America through South Africa, West Antarctica, New Zealand (in its pre break-up position), and Victoria Land to Eastern Australia is one of the longest and longest-lived active continental ...
Pankhurst, Robert J., Vaughan, Alan P.M.
core   +1 more source

‘I hate sand … it gets everywhere’—Phanerozoic sedimentary recycling from NW Africa

Basin Research, Volume 35, Issue 1, Page 187-213, February 2023., 2023
Key episodes of zircon formation and sedimentary recycling along the North Gondwana margin since Neoproterozoic times. Abstract Over 10,000 published detrital zircon ages have been reprocessed (applying a +10% normal and reverse concordance range) and analysed to understand the evolution of the detrital zircon record of north‐west Africa during the ...
James Lovell‐Kennedy, Emmanuel Roquette, Stefan Schröder, Jonathan Redfern   +3 more
wiley   +1 more source

Scale-dependent influence of pre-existing basement shear zones on rift faulting : a case study from NE Brazil [PDF]

, 2013
Rifting of continental crust initiates faults that are commonly influenced by pre-existing structures. We document newly identified faults cutting Precambrian units in the interior of the NE Brazilian margin to assess the effects of structural ...
Bezerra, Hilario, do Nascimento, Aderson, Kirkpatrick, James, Lunn, Rebecca, Pytharouli, Stella, Shipton, Zoe, Soden, Aisling   +6 more
core   +1 more source

Thermo‐Compositional Structure of the South American Platform Lithosphere: Evidence of Stability, Modification, and Erosion

Geochemistry, Geophysics, Geosystems, Volume 23, Issue 11, November 2022., 2022
Abstract Constraints on the structure of cratonic lithosphere are essential to improve our understanding of craton formation, evolution and long‐term stability. Here, we perform a joint inversion for the thermal and compositional structure of the mantle lithosphere below the South America Platform, using Rayleigh wave group velocities, elevation, and ...
Isabella Altoe, Saskia Goes, Marcelo Assumpção   +2 more
wiley   +1 more source