Results 191 to 200 of about 15,549 (211)

Croton carajasensis, a new species from Serra dos Carajás, Pará, Brazilian Amazon

Phytotaxa, 2023
During a floristic survey of Euphorbiaceae in cangas (areas of iron-rich soils) of the Serra dos Carajás (Pará State, Brazil), a new species of Euphorbiaceae was found.
R. C. Sodré, R. S. Secco
semanticscholar   +1 more source

From Source to Sink: U-Pb Geochronology and Lithochemistry Unraveling the Missing Link Between Mesoarchean Anatexis and Magmatism in the Carajás Province, Brazil

Minerals
The connection between crustal anatexis and magmatism is key to understanding the mechanisms that drive the evolution of the continental crust. Isotope geology and lithochemistry are important tools for reconstructing links between these processes, as ...
Marco Antônio Delinardo-Silva, L. Monteiro, C. P. Moreto, J. Faustinoni, T. J. S. Santos, Soraya Damasceno Sousa, R. Xavier   +6 more
semanticscholar   +1 more source

The Hydrothermal Evolution of the Alvo Açaí Cu (Au, Mo) Skarn Deposit, Carajás Province, Brazil

Economic Geology, 2022
The Alvo Açaí Cu (Au, Mo) skarn deposit forms part of several poorly explored copper deposits in the western sector of the Carajás province in Brazil.
Kamila G. Fernandes, R. Xavier, C. P. Moreto, G. Melo, A. Boyce   +4 more
semanticscholar   +1 more source

Native Plant Species as an Alternative to Rehabilitate Iron Ore Waste Piles in Carajás Mineral Province, Brazil

Communications in Soil Science and Plant Analysis
The selection of promising and appropriate plant species and knowledge of their effects on the soil are essential for mineland rehabilitation success.
Yorranna Kelly Rossy da Silva, Gabriel Caixeta Martins, R. S. Guedes, P. G. Ribeiro, Markus Gastauer, E. C. da Silva Junior, C. Caldeira, Guilherme Oliveira, P. W. M. Souza Filho, Mario Luis Oliveira, S. Ramos   +10 more
semanticscholar   +1 more source

Modeling of Cu-Au prospectivity in the Carajás mineral province (Brazil) through machine learning: Dealing with imbalanced training data

, 2020
Machine learning (ML) is becoming an appealing tool in various fields of Earth Sciences, especially in mineral prospectivity mapping (MPM) to support mineral exploration.
Elias Martins Guerra Prado, Carlos Roberto de Souza Filho, E. Carranza, J. G. Motta   +3 more
semanticscholar   +1 more source

Petrogenesis and tectonic settings of the Neoarchean A-type granitoid complex from the Carajás Province, Amazonian Craton: Constraints from geochemistry, SHRIMP U‒Pb zircon geochronology and Hf–Nd isotopes

Journal of the Geological Society
Neoarchean granitoids of the Vila Jussara complex are located in the Sapucaia domain in Carajás Province, where they appear as a series of coalescing sigmoidal-shaped plutons along the E‒W direction with high-angle foliations (75-85°) that follow a ...
F. F. da Silva, Davis C. de Oliveira, R. Dall’Agnol, João Orestes Schneider Santos, M. A. Galarza, F. Guimarães, Luan Alexandre Martins de Souza   +6 more
semanticscholar   +1 more source

Geology, geochemistry, and zircon SHRIMP U−Pb geochronology of Mesoarchean high-Mg granitoids: Constraints on petrogenesis, emplacement timing, and deformation of the Água Limpa suite in the Carajás Province, SE Amazonian Craton

Journal of the Geological Society
Determining the age, geochemical characteristics, and conditions of deformation of Mesoarchean sanukitoids is critical to unravel the petrogenesis and tectonic significance of mantle-derived rocks. This paper reports the whole-rock major element, trace
A. Nascimento, D. Oliveira, Eleilson Oliveira Gabriel, Pablo José Leite-Santos   +3 more
semanticscholar   +1 more source

Estudo da alterabilidade de rochas básicas da Mina N4 na Serra dos Carajás (PA)

O emprego de rochas para fins de engenharia enfrenta desafios por se tratar de um material natural não dimensionado, o que ressalta a importância de sua caracterização adequada para consideração em projeto. O registro de casos de ruína de estruturas em razão da falha de rochas preliminarmente classificadas como resistentes e inalteradas ...
openaire   +1 more source

Breaking up the temporal link between granitic magmatism and iron oxide-copper–gold (IOCG) deposits in the Carajás Mineral Province, NW Brazil

Mineralium Deposita, 2023
P. Toledo, C. P. Moreto, L. Monteiro, G. H. C. de Melo, Fernando Martins Vieira Matos, R. Xavier, Juliana Araújo Carvalho, Carlos Augusto Medeiros Filho, Margareth Sugano Navarro, Cristiano de Carvalho Lana   +9 more
semanticscholar   +1 more source