-PLANKTONIC FORAMINIFERA BIOSTRATIGRAPHIC ANALYSIS OF FOUR CORES FROM THE ALMIRANTE CÂMARA LOBE COMPLEX, CAMPOS BASIN. The Almirante Câmara lobe complex is located in the northeastern Campos Basin, at the southeastern Brazilian continental margin. This complex is an excellent analogue to the Carapebus Formation, where are the major hydrocarbon reserves from the post-salt interval of this basin. The objective of this work is to contribute to the existing knowledge of this lobe complex through micropaleontological analysis based on planktonic foraminifers from four piston cores, aiming to estimate the age of the sand beds deposition and to propose a hypothesis for the difference among the biozones present in each core and their expected thickness. A total of 39 samples were collected from the piston cores, prepared according to the standard methodology for Quaternary calcareous microfossils, and about 300 tests of planktonic foraminifers were taxonomically identified per sample. In the piston cores LAC 18, LAC 22 and LAC 23 were recognized the Biozone Z and the subzones Y1A and Y1B. In the piston core LAC 19 were identified the Biozone Z, the Subzone Y1 and an indication of the presence of the Biozone X at the base of the piston core. The presence of the Biozone X was not expected in the piston core LAC 19, since it is only 1.23 m long and seismic analysis done by previous works indicated that, at the site where it was collected, the thickness of the Biozone Y should be between 10 m and 20 m. Two hypothesis are considered for this difference. The first is erosion caused by the proximity of this piston core with one of the main deposition channels of the lobes. Other possibility is that of erosion caused by high-energy deep water currents, especially during the Last Glacial Maximum.Key words: Campos Basin, Quaternary, biostratigraphy, planktonic foraminifera.RESUMO -O complexo de lobos Almirante Câmara está localizado na porção nordeste da Bacia de Campos, na margem continental sudeste do Brasil. Esse complexo é um excelente análogo à Formação Carapebus, onde estão as maiores reservas de hidrocarbonetos do pós-sal dessa bacia. O objetivo deste trabalho é contribuir para o conhecimento da evolução desse complexo de lobos por meio da análise micropaleontológica com base em foraminíferos planctônicos de quatro testemunhos a pistão, pela estimativa da idade de deposição dos pacotes arenosos e da correlação desses pacotes. Foram coletadas 39 amostras nos testemunhos, as quais foram preparadas segundo a metodologia padrão para microfósseis calcários do Quaternário, realizando a identificação taxonômica de cerca de 300 carapaças de foraminíferos planctônicos por amostra. Nos testemunhos LAC 18, LAC 22 e LAC 23 foram identificadas a Biozona Z e as subzonas Y1A e Y1B. No testemunho LAC 19 foram encontradas a Biozona Z, a Subzona Y1A, possivelmente a Subzona Y1B, e uma indicação da presença Biozona X na base do testemunho. A presença da Biozona X no testemunho LAC 19 não era esperada, pois este testemunho tem apenas...

-BIOSTRATIGRAPHY AND PALEOBATHYMETRIC INFERENCES BASED ON FORAMINIFERA OF THE PALEOGENE-NEOGENE INTERVAL FROM NORTHERN CAMPOS BASIN (CAMPOS-01 WELL). The micropaleontological analysis of a section of 1020 m (1760 m-2780 m) from the Campos-01 exploratory well, located at the Northern Campos Basin under 1338 m of water depth, provided a great diversity of foraminifera species recovered mostly from strata of Cenozoic age. The objective of this study is to recognize a biostratigraphic framework for the Paleogene-Neogene section crossed by the Campos-01 well, to identify unconformities in the sedimentary record, and to know paleoenvironmental characteristics of the interval in terms of paleobathymetry. For this study, 53 cutting samples were selected and the calcareous microfossils (planktic and benthic foraminifera) were analyzed both qualitatively and quantitatively. As a result of the observed stratigraphic distribution of planktic foraminifera species, the biozones P16 (uppermost Eocene), N4, N5?-N6?, N7, (lower Miocene), N8, N9, N10?-N13?, N14-N15 (middle-upper Miocene), N16 and N17 (upper Miocene), of Blow (1969), were recognized. The presence of two unconformities is suggested, representing biostratigraphical record breaks between the depth 2720 m and 2740 m (Paleocene-upper Eocene, middle part), and between the samples 2640 m and 2670 m (Oligocene). To the upper Eocene, the paleobathymetry was interpreted to have been outer neritic, which is supported by the reduction of the total abundance of foraminifera and the presence of a benthic foraminifera association typical of this environment. In the Miocene section, from the base to the top, it was noted that the percentage of planktic foraminifera corresponds to a trend of increasing paleodepth, indicating an increment of distance from the coast, with presence of genera and some species of benthic foraminifera that suggest the predominance of the upper bathyal paleobathymetry to this interval.Key words: Foraminifera, Cenozoic, Campos Basin, biostratigraphy.RESUMO -A análise micropaleontológica de uma seção de 1020 m (1760 m-2780 m) do poço exploratório Campos-01, localizado na porção norte da Bacia de Campos sob lâmina d´água de 1338 m, constatou uma grande diversidade de espécies de foraminíferos recuperados de estratos de idade majoritariamente cenozoica. O objetivo deste trabalho é reconhecer um zoneamento bioestratigráfico para essa seção do Paleógeno-Neógeno atravessada pelo poço, identificar eventuais discordâncias presentes no registro sedimentar, e fazer inferências paleoambientais para o intervalo em termos paleobatimétricos. Para isso, 53 amostras de calha foram selecionadas e os microfósseis calcários (foraminíferos planctônicos e bentônicos) presentes foram analisados qualitativa e quantitativamente. Como resultado da distribuição estratigráfica observada das espécies, foram reconhecidas as biozonas P16 (parte média do Eoceno superior), N4, N5?-N6?, N7 (Mioceno inferior), N8, N9, N10?-N13? (Mioceno médio), N14-N15 (Mioceno médio-superior), N...