Evolu????o tect??nica do Craton Amazonas na regi??o Sudeste do estado do Amazonas: um estudo em m??ltiplas escalas com base na integra????o de dados geol??gico???estruturais e geof??sicos
| Autor: | Oliveira, Antonio Charles da Silva |
|---|---|
| Přispěvatelé: | Almeida, Marcelo Esteves |
| Jazyk: | portugalština |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Biblioteca Digital de Teses e Dissertações da UFAM Universidade Federal do Amazonas (UFAM) instacron:UFAM |
| Popis: | Submitted by S??boia N??gila (nagila.saboia01@gmail.com) on 2016-07-29T14:37:42Z No. of bitstreams: 1 Disserta????o- Antonio Charles da Silva Oliveira.pdf: 18569379 bytes, checksum: e36fa34d61be9f4678a531c17062a3b9 (MD5) Approved for entry into archive by Divis??o de Documenta????o/BC Biblioteca Central (ddbc@ufam.edu.br) on 2016-08-26T13:24:57Z (GMT) No. of bitstreams: 1 Disserta????o- Antonio Charles da Silva Oliveira.pdf: 18569379 bytes, checksum: e36fa34d61be9f4678a531c17062a3b9 (MD5) Approved for entry into archive by Divis??o de Documenta????o/BC Biblioteca Central (ddbc@ufam.edu.br) on 2016-08-26T13:27:42Z (GMT) No. of bitstreams: 1 Disserta????o- Antonio Charles da Silva Oliveira.pdf: 18569379 bytes, checksum: e36fa34d61be9f4678a531c17062a3b9 (MD5) Made available in DSpace on 2016-08-26T13:27:42Z (GMT). No. of bitstreams: 1 Disserta????o- Antonio Charles da Silva Oliveira.pdf: 18569379 bytes, checksum: e36fa34d61be9f4678a531c17062a3b9 (MD5) Previous issue date: 2016-04-07 N??o informada In the SW Amazonas State the plutonic-volcanic and sedimentary rocks were grouped in different petrotectonic associations: Juruena Basement (JBA), Juruena Supracrustal Suquence (JSSA), Post-Juruena Volcano-plutonism (PJVPA) and Post-Juruena Sedimentary Sequence (PJSSA). The JBA and JSSA (1.81???1.74 Ga), are arc magmatic-related, whereas the PJVPA (1.64???1.53 Ga) and PJSSA (1.74???1.08 Ga) define the main post-orogenetic events in this region. Magnetic data analysis show at least three patterns, named in relative chronologic, as deep linear anomalies with ENE-WSW trend (L0); linear shallow anomalies with NW-SE (L1) and NE-SW (L2) trends. The relationship of superposition suggests that L1 cross-cut L0, and both are transposed by L2 pattern. Geological-structural studies point out three structural styles, two them belongs to a NW-SE deformational belt: 1) D1 ??? banding folded structures from gneisses (upper amphibolite, 1.52 Ga); and 2) D2 ??? mylonitic foliation and schistosity structures in temperature of ~350??C (greenschist, 1.48-1.46 Ga). The third structural style (D3) has ENE-WSW and NE-SW trends, well-defined cataclastic zones generated under temperature |
| Databáze: | OpenAIRE |
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