The Riacho do Pontal prospect is situated on the border between the Borborema Province and the São Francisco Craton, in Bahia state. It comprises rocks polydeformed during the Neoproterozoic. The prospect area includes migmatites and gneissic rocks intruded by several sin- to post-tectonic granites. Structural analysis indicates a strong relationship between the development of ductile to brittle-ductile shear z...
Made available in DSpace on 2021-06-25T11:50:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-03-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); One of the worst socio-environmental disasters to mark the history of Brazil and the world occurred in November 2015 and involved the mining sector. The collapse of ...
Made available in DSpace on 2020-12-10T17:34:44Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-09-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Univ Estadual Campinas, Inst Geosci, POB 6152, BR-13083970 Campinas, SP, Brazil; Sao Paulo State Univ, Inst Sci & Technol, Sao Jose Dos Campos, SP, Brazil; Sao Paulo...
Made available in DSpace on 2019-10-04T12:15:12Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-10-01; Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES); Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Natural and manmade disasters have occurred more frequently due mainly to climate change and human pressure for productivity. One of the world's vastest disasters in...
Geobotanical remote sensing (GbRS) in the strict sense is an indirect approach to obtain geological information in heavily vegetated areas for mineral prospecting and geological mapping. Using ultra- and hyperspectral technologies, the goals of this research comprise the definition and mapping of Neotropical tree species that are associated with geological facies (here called geo-environments) as well as their ...
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The weakening mechanisms involved in the collapse of compleximpact craters are controversial. The Araguainhaimpact crater, in Brazil, exposes a complexstructure of 40 km in diameter, and is an excellent object to address this issue. Its core is dominated by granite. In addition to microstructural observations, magnetic studies reveal its internal fabric acquired during the collapse phase. All granite samples ex...
Este artigo apresenta uma alternativa para o mapeamento de regiões fortemente intemperizadas, utilizando produtos extraídos da interpretação de dados aerogeofísicos de alta densidade de amostragem. Os produtos derivados permitiram refinar a feições geológicas importantes e apoiaram o mapeamento geológico na escala 1:100.000. A região de Cláudio, porção sul do Cráton São Francisco, é constituída por terrenos gná...