Zobrazeno 1 - 10
of 1 669
pro vyhledávání: '"Carajás"'
Publikováno v:
Brazilian Journal of Geology, Vol 54, Iss 2 (2024)
Abstract In the Carajás Province, many Au and Cu deposits are hosted in Archean metabasic rocks belonging to the Itacaiúnas Supergroup. These metabasic rocks underwent seawater metamorphism of greenschist facies concomitantly to the volcanic activi
Externí odkaz:
https://doaj.org/article/beb8fd1c617b4edb85f1798cb0ee5cf0
Autor:
Karen Lopes da Silva, Luiza Santos Reis, Prafulla Kumar Sahoo, Markus Gastauer, Renato Oliveira da Silva Júnior, Adayana Maria Queiroz de Melo, Alessandro Sabá Leite, Gabriel Negreiro Salomão, Luiza Araújo Romeiro, Tarcísio Magevski Rodrigues, Edilson Freitas da Silva, Mariana Maha Jana Costa Figueiredo, José Tasso Felix Guimarães
Publikováno v:
Quaternary Science Advances, Vol 16, Iss , Pp 100245- (2024)
This study investigates the Pleistocene–Holocene transition in Serra Leste, a highly endangered southeastern Amazonian ecotone, with a focus on the lake-filling process, climate changes, and potential consequences to forest and savanna dynamics. Th
Externí odkaz:
https://doaj.org/article/1ffaa5f219604f5d9f969d71c53c370f
Publikováno v:
Anais da Academia Brasileira de Ciências, Vol 96, Iss 3 (2024)
Abstract To connect the protection of natural resources to economic development, environmental rehabilitation is a promising way to repair and compensate for impacts on biodiversity and ecosystem services. Here, we aimed to compare and select potenti
Externí odkaz:
https://doaj.org/article/ad76883604e64625887dbefee8f96736
Publikováno v:
Acta Amazonica, Vol 53, Iss 4, Pp 302-309 (2023)
ABSTRACT A new species of Jacquemontia found in Carajás National Forest, Brazil, Jacquemontia ferricola sp. nov., is described for an area with a unique flora threatened by mining. We provide a diagnosis of the new species, morphological and anatomi
Externí odkaz:
https://doaj.org/article/26bfd7a9a9074b388f3445a7ec9fa3a1
Autor:
Rayara do Socorro Souza da Silva, Aline Figueiredo Cardoso, Rômulo Simões Angelica, José Augusto P. Bitencourt, Julio Cezar Fornazier Moreira, Adriano Reis Lucheta, Isabelle Gonçalves de Oliveira Prado, Dalber Ruben Sanchez Candela, Markus Gastauer
Publikováno v:
Frontiers in Microbiology, Vol 15 (2024)
IntroductionThe microbial-induced restoration of ferruginous crusts (canga), which partially cover iron deposits and host unique ecosystems, is a promising alternative for reducing the environmental impacts of the iron mining industry.MethodsTo inves
Externí odkaz:
https://doaj.org/article/9b7de401f55d4db89a3d2f2d2a98d782
Autor:
Adam Barros Fernandes, Ricardo Perobelli Borba, Iuri Viana Brandi, Ramon Nunes Araújo, Bruno dos Santos Scherer, Júlio Almeida Moreira, Gabrieli Santos Boulhosa
Publikováno v:
Revista Brasileira de Cartografia, Vol 76, Iss 0a (2024)
O cálculo dos parâmetros espeleométricos (projeção horizontal, desnível, área e volume) em meio ao mapeamento topográfico de cavernas é um requisito amparado por lei para a definição do grau da relevância de cavidades no Brasil. Dessa for
Externí odkaz:
https://doaj.org/article/30e7ab23dc534446aa81d4ed88c5a1fe
Autor:
Ana Maria Dreher, Sérgio Martini
Publikováno v:
Journal of the Geological Survey of Brazil, Vol 7, Iss 1 (2024)
The magnetitic Cu-Au (IOCG) deposits of north Carajás, Amazonian Craton, Brazil, are hosted in the Neoarchean (2.76 Ga), dominantly basaltic-greywacke Itacaiúnas metavolcanic-sedimentary sequence that evolved in a continental rift setting. The main
Externí odkaz:
https://doaj.org/article/bc022201df8b4dbe95942e7ac24bdb27
Publikováno v:
Acta Amazonica, Vol 53, Iss 4, Pp 347-350 (2023)
ABSTRACT Several bat species use caves as roosts and some of these caves can harbor high concentrations of individuals. Such caves may represent opportunities for certain predators, benefiting from the concentration of potential prey. Here, we report
Externí odkaz:
https://doaj.org/article/032a85652b15428b8a02dc221b88d45f
Autor:
Yuri Tatiana Campo Rodriguez, Nigel J. Cook, Cristiana L. Ciobanu, Maria Emilia Schutesky, Samuel A. King, Sarah Gilbert, Kathy Ehrig
Publikováno v:
Minerals, Vol 14, Iss 8, p 757 (2024)
An enrichment in nickel (Ni) or platinum group elements (PGE) is seldom observed in ores of the iron oxide–copper–gold (IOCG) type. This phenomenon is, however, known from a few deposits and prospects in the Carajás Mineral Province, Brazil. The
Externí odkaz:
https://doaj.org/article/e04cf56a222041678951d29c9cc9ca0a
Autor:
Carlos Mario López-Orozco, Ivanklin Soares Campos-Filho, Jéssica S. Gallo, Jonas E. Gallão, Yesenia M. Carpio-Díaz, Ricardo Borja-Arrieta, Maria Elina Bichuette
Publikováno v:
European Journal of Taxonomy, Vol 921, Iss 1 (2024)
Abstract. Two new species of terrestrial isopods are described from iron ore caves in Brazil, within the Amazon biome, Circoniscus mendesi López-Orozco, Campos-Filho & Bichuette sp. nov. and C. xikrin López-Orozco, Campos-Filho & Carpio-Díaz sp. n
Externí odkaz:
https://doaj.org/article/6190390cc53d41c6a33a1907374dd2b8