Navegando por Assunto "Santana do Araguaia - PA"

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Acesso aberto (Open Access)
Evolução da região de Santana do Araguaia (PA) com base na geologia e geocronologia Pb-Pb em zircão de granitoides
(2014-06) CÔRREA, Lívio Wagner Chaves; MACAMBIRA, Moacir José Buenano
The region of Santana do Araguaia, focus of this study, is located in the southeast of Pará State, which, in its turn, lies in the southeastern Amazonian Craton. From the tectonic point of view, it is positioned in the Domain Santana do Araguaia, interpreted as an Archean terrain affected by the Transamazonic Cycle. A petrographic and geochronological study, supported by field data, was undertaken in granitoids of the region in order to unravel the evolution of this field. In modal terms, the studied rocks consist of biotite monzogranite, biotite metagranodiorite, hornblende-biotite granodiorite, hornblende-biotite metatonalite and enderbite. These rocks present themselves undeformed to moderately deformed, with some particularities: the biotite metagranodiorite presents foliation following an E-W trend; the hornblende-biotite metatonalite has a foliation following the NW-SE direction, usually with high to subvertical dives, the biotite monzogranite is isotropic, and lithologies hornblende-biotite granodiorite and enderbite show only a slight orientation of their crystals, mainly noticeable in thin section. These rock types were analyzed by evaporating Pb zircon method and the following ages were obtained: biotite metagranodiorite, 3066 ± 3 Ma and 2829 ± 13 Ma, hornblende-biotite metatonalite, 2852 ± 2 Ma, biotite monzogranite, 2678 to 2342 Ma, hornblende-biotite granodiorite, 1990 ± 7 Ma, and enderbite, 1988 ± 4 Ma. The geochronological data indicate that the rocks crystallized both in the Archean and in the Paleoproterozoic; however, no evidence to prove the action of the Transamazonic Cycle was detected in the region.
Acesso aberto (Open Access)
Variação lexical em seis municípios da mesorregião sudeste paraense
(Universidade Federal do Pará, 2013-04-25) GOMES, Edson de Freitas; RAZKY, Abdelhak; http://lattes.cnpq.br/8153913927369006
This thesis aims to identify and map the central lexical variation of the portuguese spoken in rural six counties mesoregion of Southeastern Pará: Curionópolis, Itupiranga, Santana do Araguaia, São Félix do Xingu, São João do Araguaia and Tucuruí. This mesoregion presents considerable importance in the socio-political-economic-cultural scenario in the state of Pará. The research is guided by assumptions of dialectology, under the method of geolinguistics. This work integrates project GeoLinTerm, but with specific research project ALiPA shaft. It was done a roundup of some work done over the geolinguísticos studies. The methodology involved the application of a questionnaire adapted, containing fourteen semantic fields, to be answered by informants previously selected. The data collected in six counties object of research records contain speech of 22 informants in rural Southeast mesoregion Paraense, within the methodological profile established by ALiPA. After collection, data processing was with the selection, transcription, preparation of 30 letters and description the results. Of the 256 questions in the questionnaire, we selected the 30 most frequent and greater variation to be developed in the cards. Then the letters, show occurrences by location, gender and age.