Made available in DSpace on 2018-12-11T17:15:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-11-01; Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Extensive flat plateaus are typical landforms in the cratonic compartment of tropical regions. Paleoclimate, pediplanation, laterization, and dissection have created complex and distinct geological, geomorphological, and pedological features...
Texto completo: acesso restrito. p. 105-115; Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-28T17:20:19Z No. of bitstreams: 1 1-s2.0-S0378377407000236-main.pdf: 550686 bytes, checksum: 6dedd61e42e498ac0b8e207a2a4ecdae (MD5); Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2014-09-09T14:50:52Z (GMT) No. of bitstreams: 1 1-s2.0-S0378377407000236-main.pdf: 550686 bytes, ch...
Submitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:46:10Z No. of bitstreams: 1 S0100-06832008000700024.pdf: 1335261 bytes, checksum: 93be997ecf69a3553fb301eb839d10e8 (MD5); Made available in DSpace on 2013-08-22T18:46:10Z (GMT). No. of bitstreams: 1 S0100-06832008000700024.pdf: 1335261 bytes, checksum: 93be997ecf69a3553fb301eb839d10e8 (MD5) Previous issue date: 2008-12-01; Made availa...
A jazida de caulinita de Vargem dos Óculos encontra-se na calha do Sinclinal da Moeda, sobre rochas do Grupo Itabira. A heterogeneidade litològica deste grupo propicia uma alteração geoquímica diferenciada, culminando com a formação de depressões, nas quais o conjunto encontra-se envolvido por vertentes, associadas às cristas constituídas por itabiritos. A jazida de caulinita localiza-se em uma dessas depressõe...
Texto completo: acesso restrito. p. 361-383; Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2012-12-11T20:00:40Z No. of bitstreams: 1 wwwwww885858.pdf: 1242226 bytes, checksum: 737958f937c17d8265b9f5ce7cdc3235 (MD5); Made available in DSpace on 2012-12-11T20:00:40Z (GMT). No. of bitstreams: 1 wwwwww885858.pdf: 1242226 bytes, checksum: 737958f937c17d8265b9f5ce7cdc3235 (MD5) Previous issue date: 198...
Since the 80's, studies have shown that Au is mobile in supergene lateritic sur®cial conditions. They are based either on petrological, thermodynamic studies, or experimental works. In contrast, few studies have been done on the mobility of the Pt group elements (PGE). Moreover, at the present time, no study has addressed the di€erential mobility of Au, Ag and Pd from natural alloys in the supergene environment...
Em vários pontos das superfícies de aplainamento cimeiras da região do Quadrilátero Ferrífero (MG) ocorrem pequenos depósitos de bauxita, que pelas suas reduzidas dimensões e associação com solos lateríticos e couraças ferruginosas, são de difícil caracterização em fotos aéreas 1: 25,000, Considerando que o sensor TM possui bandas espectrais que favorecem a identificação de óxidos de ferro como limonita, goethi...