Results 51 to 60 of about 4,148,897 (157)
Anais da Academia Brasileira de Ciências, 2008 Structural analysis carried out on a segment of the Neoproterozoic Ribeira Belt, southeastern Brazil, show that it represents part of the transpressive dextral orogen related to the Central Mantiqueira Province.
Tiago R. Karniol +2 more
doaj +1 more source
Peixe Zircon as a Quality Control Reference Material in U‐Pb Geochronology by LA‐ICP‐MS
Geostandards and Geoanalytical Research, Volume 50, Issue 2, Page 369-389, June 2026.Key Points Peixe#0 zircon was characterised for U‐Pb geochronology using CA‐ID‐TIMS, SIMS and a long‐term LA‐ICP‐MS data set. The consistent results establish Peixe#0 as a reference material for U‐Pb quality control. Trace element heterogeneity requires careful, CL‐guided spot selection.
Margareth Sugano Navarro +7 more
wiley +1 more source
Anais da Academia Brasileira de Ciências, 2003 Scaled sandbox models are used to simulate the development of ´basement´-controlled, salients. We investigate the controlling factors on the development of closed curvatures in map-view, considering constant both the sand pack thickness and the space ...
Caroline J. S. Gomes +2 more
doaj +1 more source
Environmental DNA, Volume 8, Issue 3, May–June 2026.Extensive eDNA sampling in remote tropical rivers revealed six new species, two of which were later confirmed through traditional surveys and formally described. eDNA also captured basin‐scale haplotype diversity, showing that pristine upstream areas harbor both more species and higher genetic diversity than sites affected by human activities ...
Vincent Prié +7 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.Abstract After assembly, supercontinents are shaped by internal rifting and peripheral subduction. However, the geodynamic relationship between these two processes and their respective contributions to supercontinent breakup remain poorly understood.
Shipeng Liu +4 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.Abstract Widespread mafic magmatism at ca. 1.8–1.7 Ga across fragments of the Columbia supercontinent records a transition in the Earth's supercontinent cycle. The paleogeographic position of the Dunhuang Block in northwestern China within Columbia, and its role in this tectonic reorganization, remain controversial.
Masumeh Sargazi +4 more
wiley +1 more source
, 2000 Neoproterozoic metasedimentary rocks of the São Francisco Supergroup occur in the Southwest part of São Francisco Craton. Three informal lithostratigraphic units composed mainly by psephites, pelites and carbonates represent the São Francisco Supergroup.
Castro, Paulo de Tarso Amorim +1 more
core +2 more sources
Diamictites and Sturtian Cap Dolomites Covering the Jacobina Group - Araras, North of Campo Formoso - Bahia [PDF]
Geologia USP. Série Científica, 2008 Occurrences of diamictites with a probable glacial origin underlying limestones north of Campo Formoso – BA around Araras village, had already been described by some authors during the 60´s and 70´s.
Augusto José de Cerqueira Lima Pedreira da Silva +1 more
doaj
Geologic conceptual model of the municipality of Sete Lagoas (MG, Brazil) and the surroundings
Anais da Academia Brasileira de Ciências, 2016 The study area is located in the state of Minas Gerais, Brazil, among the municipalities of Pedro Leopoldo, Matozinhos, and Sete Lagoas, with Velhas River as the eastern boundary.
PAULO GALVÃO +4 more
doaj +1 more source