Results 71 to 80 of about 62,283 (208)

Columbia revisited: Paleomagnetic results from the 1790 Ma colider volcanics (SW Amazonian Craton, Brazil)

, 2008
In an attempt to improve our understanding of the Paleoproterozoic geodynamic evolution, a paleomagnetic study was performed on 10 sites of acid volcanic rocks of the Colider Suite, southwestern Amazonian Craton. These rocks have a well-dated zircon U-Pb
Elming, Sten-åke,, Pinho, Francisco E.C.,, JANIKIAN, Liliane, SILVA, Jesue A., BARROS, Marcia A. S., Trindade, Ricardo I.F.,, BISPO-SANTOS, Franklin, D’Agrella-Filho, Manoel S.,, TRINDADE, Ricardo I. F., Janikian, Liliane,, Pacca, Igor I.G.,, Barros, Márcia A.S.,, D`AGRELLA-FILHO, Manoel S., PINHO, Francisco E. C., PACCA, Igor I. G., Bispo-Santos, Franklin,, Silva, Jesué A.,, ELMING, Sten-Ake   +17 more
core   +1 more source

Detrital record of mountain building : Provenance of Jurassic foreland basin to the Dabie Mountains [PDF]

, 2010
The Huangshi foreland basin developed on the southern margin of the Dabie Mountains as a result of tectonic loading during Triassic collisional suturing between the North China and South China cratons.
Jianghai Yang, Cawood, Peter Anthony, Peter A. Cawood, Yuansheng Du, Yang, Jianghai, Du, Yuansheng   +5 more
core   +1 more source

Geology and petrology of the Salto do Céu Suite: tectonic and stratigraphic implications on the SW Amazonian Craton

Brazilian Journal of Geology
: The basic rocks of the Salto do Céu Suite outcrop as sills and flows in the southwestern Amazon Craton, Rondonian-San Ignacio Province, with an age of about 1.44 Ga. Sills are 2 to 30 m thick being hosted by pelites of the Aguapei Group.
Gabrielle Aparecida de Lima, Moacir José Buenano Macambira, Maria Zélia Aguiar de Sousa, Amarildo Salina Ruiz, Maria Elisa Fróes Batata, Ronaldo Pierosan   +5 more
doaj   +1 more source

A Recipe for Exotic Continental Fragment Formation: Key Constraints From Numerical Rift Models

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract The Wilson Cycle describes the opening and closing of oceans, generating new plate boundaries at continental rifts, and extinguishing ancient plate boundaries with continental collisions (creating a continental suture). However, the general view of the Wilson Cycle does not fully explain more complex tectonic scenarios.
Alan J. Yu, Erkan Gün, Kenneth J. W. McCaffrey, Philip J. Heron   +3 more
wiley   +1 more source

Well-preserved Late Paleoproterozoic volcanic centers in the Sao Felix do Xingu region, Amazonian Craton, Brazil

, 2010
The Amazonian craton in the Sao Felix do Xingu city, southeast region of the Para state, north of Brazil, hosts exceptionally well-preserved Paleoproterozoic bimodal magmatic units grouped in the Sobreiro and Santa Rosa formations.
Juliani, Caetano, FERNANDES, Carlos Marcello Dias   +1 more
core   +1 more source

The 1.88 Ga Uatumã Magmatism in the Serra dos Magalhães region: petrology and implications to the extension of the south-eastern edge of the Amazonian Craton

Brazilian Journal of Geology, 2020
The Amazonian Craton (AC) is a Pre-Cambrian tectonic segment that extends over 4.3 × 105 km2 at the northern portion of the South American Platform. Phanerozoic sedimentary basins cover most of the edges of the AC and sparse occurrences of Precambrian ...
Ianna Ferreira de Lima, Ronaldo Pierosan, Márcia Aparecida de Sant'Ana Barros, Rogério Roque Rubert, Carlos Augusto Sommer, Diogo Isamu de Almeida Okuno   +5 more
doaj   +1 more source

Linking the Neoproterozoic to Early Paleozoic Belts Bordering the West African and Amazonian Cratons

, 2023
Correlations between the Neoproterozoic belts surrounding the West African Craton and northern Brazilian cratons have long been a subject of interest and controversies. Due to the splitting of African and South American continents by the Atlantic oceanic domains, no direct links are preserved, requiring relying on various geological or geophysical ...
Michel Villeneuve, Camille Rossignol
openaire   +1 more source

Seismic Imaging of the Transition From Normal to Flat Subduction in Southern Peru by Full Waveform Inversion of Teleseismic Waves

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract The high topography of the central Andes (15–28°S) is supported by thick crustal roots. The recent uplift of the Altiplano is often explained by crustal shortening and subsequent delamination of the lower crust, though its deep structure and plateau formation processes remain debated.
Li‐Yu Kan, Vadim Monteiller, Anne Socquet, Hernando Tavera, Sébastien Chevrot   +4 more
wiley   +1 more source

Amphibian diversity in Amazonian flooded forests of Peru [PDF]

, 2015
Global biodiversity is currently facing the sixth mass extinction, with extinction rates at least 100 times higher than background levels. The Amazon Basin has the richest amphibian fauna in South America, but there remain significant gaps in our ...
Upton, Kathleen Anne
core  

Paleomagnetic Study of Paleoproterozoic Units from Amazonian Craton

, 2012
Na América do Sul, o Cráton Amazônico representa um componente essencial nas reconstruções de supercontinentes, entretanto, há uma grande escassez de dados paleomagnéticos de qualidade para esta unidade geotectônica, principalmente, para o Proterozóico ...
Santos, Franklin Bispo dos, Franklin Bispo dos Santos   +1 more
core   +1 more source