2014-09-222014-09-222003-06-30NASCIMENTO, Márcia Helena D'Oliveira. Identificação de ambientes de sedimentação na Área Metropolitana de Belém a partir de perfis de poço. 2003. 40 f. Dissertação (Mestrado) - Universidade Federal do Pará, Centro de Geociências, Belém, 2003. Curso de Pós-Graduação em Geofísica.https://repositorio.ufpa.br/handle/2011/5796This thesis presents a study based on patterns related to the shape of logging curves obtained in groundwater wells drilled in Belém metropolitan area. The objective of the study was to recognize Cenozoic sedimentation sequences and their sedimentation environment. Single point resistance, spontaneous potential and gamma ray logging from 21 wells were analyzed, covering maximum depth of 300 m. The study allowed to recognize two main units: one of them, characterized by large amount of clays and thin sand layers, occurring between surface and 160 m depth, while the other, below 160 m, presents thick sandy layers. These units were associated to the sedimentary sequences of Lower Cenozoic described by Rossetti (2000) that correlate to Pirabas and Barreiras Formations, and to Post-Barreiras and Holocenic sediments. For the upper unit, the shape of the logging curves show patterns that can be associated to transgression and regression, while for the lower unit the shape of the curves suggest a center of channel sedimentation. The study shows that the methodology used to recognize sedimentation environment can be considered satisfactory if no a priori geological information is available.porAcesso AbertoPerfilagem geofísica de poçosÁguas subterrâneasAmbiente de sedimentaçãoRegião Metropolitana de BelémPará - EstadoAmazônia brasileiraDissertaçãoCNPQ::CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS::GEOFISICA::GEOFISICA APLICADA