A5101638091- Geological and Geochemical Analysis
- Geochemistry and Geologic Mapping
- Paleontology and Stratigraphy of Fossils
- Geological and Geophysical Studies Worldwide
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Geological and Tectonic Studies in Latin America
- High-pressure geophysics and materials
- Geological formations and processes
- Business and Management Studies
- Geotechnical and Geomechanical Engineering
- Mineralogy and Gemology Studies
- Geochemistry and Elemental Analysis
- Geological Studies and Exploration
- Academic Research in Diverse Fields
- Radioactive element chemistry and processing
Universidade de São Paulo
2018-2024
Boise State University
2022-2023
Universidade de Brasília
2018-2023
The end-Triassic extinction (ETE) event represents one of the 'big five' episodes mass extinction. leading hypothesis for cause ETE is intrusion voluminous magmas Central Atlantic Magmatic Province (CAMP) into carbon-rich sediments two South American sedimentary basins, around 201.5 Ma. timing dikes and sills emplacement, however, must be considered in light age models from CAMP rocks occurring North America. In this work, we present new high-precision ages critical samples NE Brazil...
Abstract The basaltic Mosquito and Sardinha formations in the Parnaíba Basin are related to opening of Atlantic Ocean at Triassic–Jurassic boundary early Cretaceous, respectively. Formation consists tholeiitic flows with both high-Ti (>1.5 wt%) low-Ti (<1.5 compositions petrogenetic characteristics enriched mantle reservoirs. basalts have an initial 87 Sr/ 86 Sr isotopic composition 0.70296–0.70841 a low Nd (0.512245–0.512677) associated enrichment large ion lithophile high field...
The opening and spreading of the Atlantic Ocean between Africa South America evolved during Early Cretaceous were preceded by dramatic tholeiitic (mafic) magmatism minor silicic alkaline volcanism. These features are presently recognized from equatorial regions Brazil to Falklands Africa. In southeastern America, continental flood basalts related plumbing systems constitute Paraná Magmatic Province (PMP), whose African counterpart is Etendeka (EMP). northeastern Brazil, dike swarms sill...
Abstract We present the results of a geochronological investigation that was conducted on mafic rocks (dolerites) form two giant dyke swarms in NE Brazil, whose intrusion correlated to break-up West Gondwana supercontinent and opening Atlantic Ocean. Despite their impressive dimensions, these lack any geological information, which motivated us develop speedy, low-cost analytical protocol, modified from Cassignol unspiked K–Ar technique, define age patterns. The were interpreted light basic...
Abstract Genesis and emplacement of Vredefort Granophyre, the impact melt rock exposed on Dome, erosional remnant central uplift structure, South Africa, have long been debated. This debate was recently reinvigorated by discovery that besides previously known felsic variety >66 wt% SiO 2 , a second, somewhat more mafic phase <66 occurs along Granophyre dike farms Kopjeskraal Eldorado in northwest sector dome. Two hypotheses put forward to explain genesis this second phase: (1)...
The Parnaíba basin is a 7.8 × 105 km2 Phanerozoic sedimentary province in NE South America which hosts basic and (rare) intermediate (to acid) rocks of large igneous provinces (LIP) related to the early stages Atlantic rifting episodes. Upper Triassic/Lower Jurassic (Rhaetian/Hettangian) Mosquito Formation Central Magmatic Province (CAMP) has been historically characterized on western side basin, while Early Cretaceous (Hauterivian/Valanginian) Sardinha Equatorial (EQUAMP) considered...
Early Cretaceous mafic dikes and sills intrude the Precambrian rocks of Borborema Province Paleozoic deposits Parnaíba Basin (NE Brazil). The giant Rio Ceará-Mirim dike swarm approximately 1,000 km in length shows an arcuate geometry formed by sets ranging from E-W to NE-SW directions. second main set extends for 380 WNW-direction join close Potiguar rift. We investigated tectonic setting magmatism through crystallization history based on plagioclase crystal size distribution (CSD)...