A5038180052- Geochemistry and Geologic Mapping
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geochemistry and Elemental Analysis
- Paleontology and Stratigraphy of Fossils
- Geography and Environmental Studies
- Mineralogy and Gemology Studies
- Clay minerals and soil interactions
- Fish biology, ecology, and behavior
- Geological and Geophysical Studies
- High-pressure geophysics and materials
- Geological formations and processes
- Geology and Paleoclimatology Research
- Science and Science Education
- Amazonian Archaeology and Ethnohistory
- Hydrocarbon exploration and reservoir analysis
- Geological Modeling and Analysis
- Coral and Marine Ecosystems Studies
- Geotourism and Geoheritage Conservation
- Cryospheric studies and observations
- Linguistics and Language Studies
- Public Health in Brazil
- Heavy Metals in Plants
- Archaeological and Geological Studies
- Minerals Flotation and Separation Techniques
Universidade Federal do Pará
2015-2024
United States Geological Survey
2023
Instituto de Geociencias
1992-2020
National Council for Scientific and Technological Development
2018
Sociedade Brasileira de Geologia
2015
Instituto de Geocronología y Geología Isotópica
2002-2014
Universidade Federal de Mato Grosso
2013-2014
Institut für Sozialforschung und Sozialwirtschaft
2012
Isotop (Israel)
1990-2012
Centre de Géosciences
2012
The Amazonian Craton (AC), located in the north of South America, is surrounded by Neoproterozoic orogenic belts and divided into six major geochronological provinces: Central -CAP (> 2.3 Ga); ; .Sr, Pb Nd isotopic compositions igneous orthogneissic rocks from AC show that a significant addition new crustal material upper mantle occurs during Paleo-and Mesoproterozoic.The pattern indicated Archean protocraton consisted formerly independent microcontinents were amalgamated Paleoproteorozic...
The Archean geological evolution of the Carajas metallogenic province is marked by A-type granite emplacement coevally with a regional shortening episode at 2.7 Ga. These granites intruded metavolcano-sedimentary series Itacaiunas Supergroup. We studied three massifs: Igarape Gelado, Estrela and Serra do Rabo. present low Al2O3 values, high FeOt/(FeOt + MgO) (K2O Na2O)/CaO along contents Zr, Y, Nb rare-earth elements. Sm–Nd model ages (2.97 Ga to 3.2 Ga) slightly negative {varepsilon}Nd(t)...
1.88 Ga A‐type granites in the Archean Rio Maria granite‐greenstone terrane of eastern Amazonian craton, Brazil, have much common with oxidized ∼1.4 "anorogenic" western United States. Nd isotopic data on these and their country rocks show that (1) crust was differentiated from depleted mantle at 3.0 Ga, (2) Paleoproterozoic were derived deep parts this crust, (3) postdate protolith by least 1 Ga. No convergent processes are known to affected craton ∼1.9 and, therefore, there is little doubt...
The Xinguara area, located in the Rio Maria Granite-Greenstone Terrain - Pará, is composed of several Archaean granitoids. Structures and fabric elements visible at outcrop microscopic scales, zircon Pb-Pb ages suggest that these granitoids were emplaced two distinct episodes growth crust (i) 2.948 ± 5 to 2.924 2 Ma, genesis, emplacement deformation Caracol tonalitic complex, related Arco Verde tonalite, wich outcrops Marajoara TTG rocks São Félix do Xingu region. This period was marked by...
GEOLOGY AND GEOCHRONOLOGY OF ARCHEAN GRANITOIDS THE XINGUARA REGION: IMPLICATIONS FOR EVOLUTION RIO MARIA GRANITE-GREENSTONE TERRANE, AMAZONIAN CRATON The Xinguara area, located in the Rio Maria Granite-Greenstone Terrain - Para, is composed of several Archaean granitoids. Structures and fa bric elements visible at outcrop microscopic scales, zircon Pb-Pb ages suggest that these granitoids were emplaced two di stinct episodes growth crust: (i) 2.948 ± 5 to 2.924 2 Ma, genesis, emplacement...