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The Gray Fossil Site (GFS) includes multiple karst sub-basins that are filled with lacustrine sediments. Early paleontologic work on one of the sub-basins (GFS-2) indicates a late Miocene/early Pliocene age based on an assemblage of well-preserved vertebrate fossils. However, detailed palynological analysis of the 38.7. m deep GFS-1 core recovered from another sub-basin indicates an older age. The presence of Caryapollenites imparalis, C. inelegans and C. prodromus association suggests a Paleocene to Eocene age for the GFS-1 core section. This age is also supported by the absence of pollen of the Poaceae, the grass family that is not commonly present until the Neogene. Age constraints from palynologic data suggest that the GFS has a more complex basin-fill history than previously suspected, and that multiple depo-centers within the basin may have been periodically active through the Cenozoic. Palynofacies analysis of the GFS-1 core indicates that phytoclasts and opaques are the most abundant organic constituents and have diluted both the palynomorph population and amorphous organic matter. Two possible scenarios can account for this observation: 1) an oxidizing depositional paleoenvironment; and 2) a localized high flux of charcoal following wildfires and subsequent increased runoff.

Late Carboniferous to Permian strata of the Lower Karoo sequence in the Kalahari Karoo Basin, Botswana, contains suitably preserved palynomorphs for biostratigraphic classifications. All taxa described from eight out of the nine coreholes sampled for the study comprise sixty-eight genera made of one hundred and sixty-five miospore species, eleven arcritarchs species, seven prasinophytes species, and 1 chlorophyte species. Two wellsampled coreholes, namely STRAT 1 and CKP6, have lacial facies, to warm and drier conditions during deposition of the lower Ecca sequences. Palaeoclimatic conditions ultimately turned wet during middle Ecca times generating coal-forming settings. Palaeoenvironmental interpretations based on palynofacies data indicate a predominantly proximal palaeo-depositional setting for the entire Lower Karoo sequence at STRAT 1 borehole. The broader depositional environment transformed from glacial sub-environments, during deposition of the Dwyka Group, into a relatively wider basin punctuated by some rare marine incursions, in the early Ecca Group, and ultimately developing into a deltaic system.

The present study of the Abu Roash and Bahariya formations in well GPTSW-7 refines our understanding of the subsurface Cretaceous of the north Western Desert of Egypt. Our investigations are based on the palynological analyses of 71 cuttings samples, of which 24 have also been analyzed for geochemistry, in addition to 3 sidewall cores analyzed for vitrinite reflectance (Ro). Four palynological zones and three subzones in addition to a poorly fossiliferous interval ranging in age from Coniacian-Santonian to early Cenomanian are proposed. These include a poorly fossiliferous interval (Coniacian-Santonian), Dinogymnium vozzhennikovae Interval Zone (late to middle Turonian), Ephedripites ambiguus-Ephedripites multicostatus-Foveotricolpites giganteus-Foveotricolpites gigantoreticultus Assemblage Zone (early Turonian), Classopollis brasiliensis Interval Zone (late to middle Cenomanian), and Afropollis jardinus Interval Zone (early Cenomanian). The succeeding subzones are; Afropollis kahramanensis Interval Subzone, Elaterosporites klaszii Interval Subzone and Cretacaeiporites densimurus Interval Subzone, all of early Cenomanian age. Total organic carbon (TOC) and Rock-Eval pyrolysis and palynofacies analyses indicate that the Bahariya Formation and the Abu Roash G Member are primarily of kerogen III type and hence gas prone, suggesting a strong influence of hydrogen-enriched organic matter. The Abu Roash A, C-E Members may also be gas prone (type III kerogen) and appear to contain highly oxidized terrestrial organic matter. In contrast, the Abu Roash F Member has very high TOC and HI values and contains a very high proportion of amorphous organic matter (AOM) indicating a highly oil-prone facies. While this finding is not unexpected for anoxic black shale, it contrasts with earlier studies that suggest a gas prone nature. Ro measurements show that the Bahariya Formation represents an immature-early genesis dry gas phase. This is also true for all investigated samples from the Abu Roash and Bahariya formations, based on their low thermal alteration index (TAI). Quantitative and qualitative analyses of both the palynoflora and palynofacies show that the Abu Roash A and C Members (B is missing), both of Coniacian-Santonian age, represent oxic proximal and distal shelf environment. The Abu Roash D and E Members, dated as Turonian, represent oxic (proximal) shelf, whereas the Cenomanian Abu Roash F Member was deposited in a distal suboxic-anoxic basin. The Cenomanian Abu Roash G Member and the Bahariya Formation were deposited in a shallow marine and shallow marine to fluvio-deltaic setting, respectively. The Senonian Palmae Province is recognized in the palynoflora by the presence of Proteacidites, Auriculiidites reticulatus, Ariadnaesporites, Gabonisporis vigourouxii. On the other hand the Albian-Cenomanian Elaterates Province is characterized by the presence of Steevesipollenites, Gnetaceaepollenites, Elaterocolpites, Elaterosporites, Elateroplicites, Senegalosporites, Sofrepites, Afropollis and Cretacaeiporites.

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / O presente estudo baseou-se na análise das variações verticais do conteúdo orgânico de 50 amostras derivadas do furo de sondagem 9-FBA-61-BA, que permitiu conhecer melhor os representantes palinofaciológicos e palinológicos do Cretáceo Inferior da Bacia do Recôncavo, na área estudada. Através da observação a luz da microscopia óptica em luz branca transmitida e luz ultravioleta, foi possível posicionar temporalmente a seção, e individualizar quatro tipos de palinofácies distintas, levando-se em conta os tipos e o grau de preservação da matéria orgânica. As análises quantitativas do conteúdo orgânico mostram um predomínio de material orgânico de origem alóctone, representado por grãos de pólen, esporos e fitoclastos na base e no topo da seção, sendo sua porção média dominada por material orgânico amorfo autóctone. As mais altas fluorescências são observadas nas porções média e basal da seção indicando um ambiente mais redutor à época de sedimentação, destes estratos. Os dados de ICE apresentam valores de maturação entre 4,5 e 5,0 caracterizando um material orgânico maturo para geração de hidrocarbonetos. A associação palinoflorística identificada, bem como os dados litológicos obtidos, indicam um paleoambiente exclusivamente continental, composto por um sistema fluvial e deltaico-lacustre, sob um clima quente árido para a época deposicional. Tal associação enquadra-se àquelas observadas nas bacias do nordeste brasileiro e insere-se nas características das associações pertencentes à Província Microflorística Dicheiropollis (ex-WASA). Foram identificadas 57 espécies de palinomorfos, incluindo grãos de pólen, esporos, algas e fungos. A detecção das espécies, Dicheiropollis etruscus e Aequitriradites spinulosus, nos permitiu posicionar o intervalo nas biozonas Vitreisporites pallidus e Dicheiropollis etruscus, consideradas como de idades Hauteriviano Barremiano. / The present study was based on vertical variations analysis of the organic matter from 50 core samples collected from the well 9-FBA-61-BA, allowing better understanding of the Early Cretaceous of Reconcavo Basin palynological and palynofacies characteristics. Observations throughout combined light and blue light/UV fluorescence techniques, permitted to defined the section depositional time, and to distinguish four individual types of palynofacies, taking into account the variety and degree of preservation of organic matter.. Quantitative analysis of the organic content shows a predominance of allochthonous organic matter, represented by pollen, spores and phytoclasts on the base and top of the section; however the middle part is dominated by amorphous organic matter. On the other hand, the highest fluorescence was observed at the base and middle portion of the section suggesting a low oxidizing level at this sedimentation time. ICE data presents mature values ranging between 4.5 to 5.0 indicating that the deposits are in the oil generation window. The identified palynoflora and obtained lithological data suggests an exclusively continental paleoenvironment, composed by fluvial and deltaic - lake systems, in a warm and arid climate at the deposition time. Were identified 57 species of palynomorphs, including pollen, spores, algae and fungi. The detection of the Dicheiropollis etruscus and Aequitriradites spinulosus index species indicates these deposits belong to the Hauterivian - Barremian Vitreisporites pallidus and Dicheiropollis etruscus palynozones, respectively. This assemblage fits into those observed in the Brazilian northeastern basins and have the microfloristic assemblage characteristics that fit in to the Dicheiropollis Province (= WASA Province).

Abstract: This palynostratigraphic study of Mesozoic successions in hydrocarbon-prospective Tanzanian coastal basins utilizes cores, ditch cuttings, and outcrop samples. These contain rich and diverse dinoflagellate suites ranging in age from Middle Jurassic (Bajocian) to earliest late Cretaceous (Cenomanian). Spores and pollen grains are also recorded, but these are, with some exceptions, subordinate to the dinoflagellate components.In the systematic section, one new dinoflagellate cyst genus, Kipatimudinium, is formally described and nine new species are established: Amphorulla ruvuense, Dichadogonyaulax mandawaense, Egmontodinium annaiae, Hystrichodinium playfordii, Kipatimudinium foliatum (type species), Limbodinium patulum, Pseudoceratium redactum, Sentusidinium tanzaniensis, and Yalkalpodinium africanum. Six, informal, stratigraphically successive dinoflagellate assemblages are distinguished:Assemblage I (Bajocian-Bathonian); Assemblage II (Callovian); Assemblage III (Oxfordian); Assemblage IV (Kimmeridgian-Tithonian); Assemblage V (Berriasian-Barremian); and Assemblage VI (Aptian-Cenomanian).Coastal Tanzania appears referable to the Austral dinoflagellate realm due to the presence of, inter alia, Broomea ramosa, Komewuia glabra, Wanaea clathrata, and Wanaea digitata. Some minor biostratigraphic anomalies are noted, including the introduction of Glossodinium dimorphum; this is datable as early Oxfordian in Tanzania whereas in Australasia the species appears earlier (in the Callovian). A few noteworthy quantitative phenomena are evident; for instance, the abundance of Lithodinia jurassica in the vicinity of the Callovian-Oxfordian boundary and the marked increase of Wanaea spp. in the Oxfordian, specifically in the Ruvu Basin of the northern coastal belt. These events are of chronostratigraphic significance and could be applicable to regional correlation. Middle-Late Jurassic assemblages show a conspicuous degree of cosmopolitanism, and include some species previously considered to be restricted to certain regions in the low and high latitudes.The Early Cretaceous (Berriasian-Barremian) assemblages show close affinity to the Tethyan Realm. The latest Early Cretaceous (Albian) to earliest Late Cretaceous (Cenomanian) strata are allied to the Albian-Cenomanian Elaterates province. The presence of elater-bearing pollen in offshore and onshore sections of Tanzania indicates that the elaterates had a wider geographic distribution than previously reported: i.e., extending beyond the northern part of the African and South American continents.The lower part of the Kipatimu Formation, which contains Assemblage IV, yielded Komewuia glabra, Broomea ramosa, and Rigaudella aemula and their presence precludes the Early Cretaceous age previously ascribed to this part of the formation. Likewise the Makonde and Mkindani Beds have yielded typically Early Cretaceous pollen grains including Classopollis braziliensis, Retitricolpites vulgaris, and Elaterocolpites castelainii.The Jurassic/Cretaceous boundary is coincident with the upper limit of Assemblage IV based on the last appearances of, in particular, Komewuia glabra and Rigaudella aemula. Within the Kipatimu Formation (as represented in wells SS-5 and SS-7), the systemic boundary appears conformable. But elsewhere in the coastal belt, the boundary is clearly unconformable.On the basis of palynostratigraphic data, significant biostratigraphic events, such as introductions and exits of certain dinoflagellate species often match sequence boundaries.From palynofacies analyses and palynostratigraphic data the Kipatimu Formation is dominated by phytoclasts indicating high terrestrial inputs during its deposition. Abundance of black wood (of high buoyancy) in the majority of samples implies high energy settings and abundance of brown wood (less buoyant) is an indication of a sudden terrestrial input into the marine system. The organic composition of sedimentary rocks is an important means of which the depositional history of the enclosing sediments can be understood. Different environmental settings clearly influence the character of palynofacies. For example, abundant chorate cysts (e.g., Systematophora spp.) in samples from the upper sections of SS-5 suggest open marine settings. Therefore, palynofacies analyses can be viewed as providing useful pointers to interpreting the environmental circumstances in which the rocks, in this case the Kipatimu Formation, were deposited.

As informações palinológicas da Bacia do Pelotas são relativamente escassas para a seção pré-quaternária, ensejando estudos sistematizados, iniciados nos últimos anos. Com base na análise bioestratigráfica e a técnica de palinofácies, este trabalho apresenta resultados palinológicos obtidos de testemunhos de sondagem de três poços selecionados da bacia: 2-CA-1-RS, 2-TG-96-RS e BP-01 para investigar as variações paleoambientais preservadas nos depósitos neogenos e obtenção de datações relativas. Condições de deposição em ambiente marinho foram registradas para os três poços, com variações significativas entre eles. No poço 2-CA-1-RS, as formas registradas de dinoflagelados nas amostras basais caracterizam ambiente plataformal de nerítico médio a profundo, enquanto os níveis superiores são interpretados como nerítico interno. Para o poço 2-TG-96-RS, o padrão de distribuição da matéria orgânica particulada (mop) e as espécies de dinoflagelados registradas sugerem deposição em condições de ambiente nerítico interno, em todas as amostras. Entretanto, a maior representatividade da mop continental, nos níveis de topo, caracteriza certa proximidade com o continente. De maneira geral, é verificada uma tendência regressiva para os poços 2-CA-1-RS e 2-TG-96-RS. A distribuição da mop ao longo da seção estudada do poço BP-01 indicam condições marinhas distais. Esses resultados são distintos dos dois outros poços. As associações de dinoflagelados somadas aos demais palinomorfos registrados sugerem condições de deposição da seção, entre o ambiente nerítico externo a oceânico. Os resultados encontram apoio na literatura disponível sobre os mesmos poços assim como em outros trabalhos sobre a evolução geológica geral da bacia, durante o Neógeno. Espécies-índices foram identificadas nas associações palinológicas; dinoflagelados foram mais úteis para o posicionamento bioestratigráfico das seções. A seção estudada do poço 2-CA-1-RS é datada entre o Mioceno inferior–Pleistoceno inferior; do poço 2-TG-96-RS entre o Mioceno superior–Plioceno inferior; e do poço BP-01 no Mioceno inferior. Esses resultados demonstram o potencial de aplicação da palinologia para a interpretação paleoambiental e bioestratigráfica da Bacia de Pelotas. / Palynological data for the pre-Quaternary section from the Pelotas Basin are relatively scarce; in this way, systematic studies have been started in this theme from the last years. This work presents palynological results obtained from core samples collected in three selected wells: 2-CA-1-RS, 2-TG-96-RS and BP-01, based on biostratigraphy and palynofacies analyses, to offer their relative ages and paleoenvironmental changes. Marine environment depositional conditions were recorded for the three wells, with significant changes among them. For the 2-CA-1-RS well, assemblages from the basal samples characterize neritic to distal shelfl marine environments, while associations recorded from upper samples suggest proximal marine environment. The particulate organic matter (mop) distribution pattern and the dinoflagellate cysts species registered from the well 2-TG-96-RS suggest a depositional inner neritic environment, for all samples. However, the great representation of continental mop in the upper section of this well allows to indicate a closeness to the continental environment. In general terms, a regressive trend for the 2-CA-1-RS and 2- TG-96-RS wells is recognized. The distribution of mop along the BP-01 well samples suggest distal marine conditions. These results are different from the other two wells. The dinoflagellate associations, along with the other recorded palynomorphs, suggest that this section developed between the outer neritic and oceanic environments. These results are in accordance with the available literature from the same well as well as other studies on the general geological succession of the basin, during the Neogene. Index species were identified among the palynologic associations; dinoflagellates were more useful for biostratigraphic positioning of the sections. The study section of the 2- CA-1-RS is dated between the lower Miocene and the lower Pleistocene; samples from the 2-TG-96-RS are regarded as upper Miocene to Lower Pliocene; section of the BP- 01 is dated as lower Miocene. These results demonstrate the application potential of palynology to interpret the paleoenvironment and biostratigraphy of the Pelotas Basin.

Agência Nacional do Petróleo / O presente estudo baseou-se na análise do conteúdo orgânico de 173 amostras da Formação Pojuca, provenientes dos furos de sondagem 9-FBA-65-BA e 9-FBA-79-BA perfurados na Bacia do Recôncavo. Neste trabalho procedeu-se a um estudo integrando, resultados palinológicos, palinofaciológicos e de geoquímica orgânica com base nos dados de teores de Carbono Orgânico Total (COT) e de pirólise Rock-Eval. A associação palinoflorística identificada indica um paleoambiente dominantemente continental, composto por um sistema fluvial deltaico-lacustre, sob um clima quente e árido. Tal associação enquadra-se àquelas observadas nas bacias do Nordeste brasileiro e insere-se nas características das associações pertencentes à Província Microflorística Dicheiropollis (ex WASA). Foram identificadas 55 espécies de palinomorfos, incluindo grãos de pólen e esporos. A identificação das espécies, Dicheiropollis etruscus e Vitreisporites pallidus permitiu posicionar o intervalo analisado na Biozona Vitreisporites pallidus, considerada como de idade Aratu. Por meio de observação em microscopia óptica com luz branca transmitida e luz ultravioleta; e le-BA, caracterizando um conteúdo orgânico na janela de geração de hidrocarbonetos. Com base nos resultados de pirólise Rock-Eval, verificou-se que a Formação Pojuca, na área, é constituída vando-se em conta os tipos e o grau de preservação da matéria orgânica, foi possível individualizar três palinofácies distintas. As análises quantitativas do conteúdo orgânico mostram uma mistura de material orgânico de origem alóctone, representado por grãos de pólen, esporos e fitoclastos e autóctone dominada por material orgânico amorfo. As mais altas fluorescências são observadas nas Palinofácies 1 e 2, indicando um ambiente mais reduto r à época de sedimentação, destes estratos. Os dados de ICE apresentam valores de maturação de 5 para os sedimentos atravessados pelo poço 9-FBA-65-BA e 6,5-7 para o poço 9-FBA-79 na sua quase totalidade por matéria orgânica do tipo II, rica em hidrogênio e pobre em oxigênio, correspondendo ao um tipo de matéria orgânica propícia à geração de hidrocarbonetos líquidos e gasosos. Os níveis 3 e 4, localizados nas Palinofácies 1 e 2 do poço 9-FBA-79-BA apresentam valores de COT superiores a 1,5%, e considerando os dados de pirólise Rock-Eval, nota-se que estes intervalos são os que oferecem um maior potencial gerador, já que os valores de S2 excedem a 5,0 mg HC/g de rocha, além de valores de IH superiores a 200 e atingindo 600. / This study presents an integrated study encompassing palynological, palynofacies and organic geochemistry (particularly Total Organic Carbon [TOC] and pyrolysis) investigations. It was based on analysis of the organic content from 173 core samples of the Pojuca Formation collected from the 9-FBA-65-BA e 9-FBA-79-BA wells drilled in the Recôncavo Basin. The identified palynoflora suggest a predominantly continental depositional paleoenvironment, composed by a fluvial deltaic-lacustrine system in a hot and arid climate. Comparisons with overseas palynofloras support the hypothesis that this assemblage belongs to the Dicheiropolis (ex W.A.S.A) palynofloristic belt. Fift six palynomorphs species have been identified and partially illustrated. The identification of the Dicheiropollis etruscus and Vitreisporites pallidus species allows inserting these strata in the Vitreisporites pallidus Biozone, which is considered as Aratu in age. By observing optical microscopy transmitted white and ultraviolet light, it was possible to identify three distinct Palynofacies, taking into account the types and degree of preservation of organic matter. The quantitative analysis of organic content show a mixture of allochtone organic material, represented by pollen grains, spores and indigenous phytoclasts (woody tissue) and dominated by amorphous organic material. The highest observed fluorescence are present in the Palynofacies 1 and 2, indicating a more reducer conditions at the sedimentation environments of these strata. The SCI data present maturation values 5 for well 9 FBA-65-BA and 6.5-7 to the well 9 FBA-79-BA, inserting the organic material content in the hydrocarbon generation window. Based on the results of Rock-Eval pyrolysis, it was found that the Pojuca Formation samples is constituted by overwhelming majority of organic matter type II, rich in hydrogen and oxygen-poor, corresponding to a type of organic matter for the generation of liquid and gaseous hydrocarbons. Levels 3 and 4, belongs to the Palinofácies 1 and 2 of the 9 FBA-79-BA well and present TOC values greater than 1.5%. Considering the Rock-Eval pyrolysis data, its possible to affirm that these ranges are potential generator, since S2 values exceed 5.0 mg HCg, and IH values surpass 200 reaching 600.

Fundação Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro / O presente estudo baseou-se na análise do conteúdo orgânico do furo de sondagem rasa do poço 9-FBA-69-BA localizado na Bacia do Recôncavo. Foram utilizadas 126 amostras para análise de COT e 35 pares de lâminas para as análises palinológicas e palinofaciológicas. As análises palinofaciológicas mostraram que os componentes orgânicos particulados são dominados por material orgânico amorfo em praticamente toda a seção. Representantes alóctones estão pontualmente presentes e representados por fitoclastos, grãos de pólen e esporos. Os resultados de COT mostram valores percentuais acima de 1% em praticamente todo o intervalo estudado. Através da observação à luz de microscopia branca transmitida e luz incidente, foi possível individualizar três palinofácies distintas para a seção, levando-se em conta os tipos e o grau de preservação da matéria orgânica. A análise do ICE (Índice de Coloração dos Esporos) apresenta valores de maturação entre 4,5 a 5, caracterizando um grau de maturação térmica próximo da janela de geração de hidrocarbonetos. A associação palinoflorística mostra uma baixa diversidade de representantes, onde dentre os 292 palinomorfos com 28 gêneros e 11 espécies de grãos de pólen e esporos, 167 são representados somente pela espécie Classopollis classoides. Baseado na associação palinoflorística presente e na análise litológica do poço podemos inferir que a sedimentação ocorreu em um paleoambiente fluvial deltaico- lacustre, sob um clima árido a semiárido visto a abundante presença de formas Rimuladas. Apesar da não detecção das formas guias diagnósticas de idade, que definem as palinozonas do arcabouço palinoestratigráfico válido para seções cretáceas brasileiras, a associação palinológica recuperada, com formas típicas do eocretáceo (Classopollis classoides, Araucariacites australis, Equisetosporites sp.), aliado a presença da espécie Vitreisporites pallidus, e ausência de formas do neocretáceo, nos permitiu posicionar a seção na palinozona Vitreisporites pallidus considerada de idade Aratu / The present study was based on analysis of the organic content of the shallow survey of well 9-69-BA-FBA located in the Recôncavo Basin. 126 samples for TOC and 35 pairs of blades were used for palynological and palynofacies analysis. The palynofacies analysis showed that particulate organic components are dominated by amorphous organic material in almost any section. Alien representatives are occasionally present and represented by phytoclasts, pollen grains and spores. The results of TOCshows percentages above 1% in almost the entire range studied. Through observation with white transmitted light and UV lightmicroscopy, it was possible to distinguish three distinct palynofacies section, considering the type and the degree of preservation of the organic material. The analysis of SCI (Spores Color Index) has maturation values between 4.5 to 5, featuring a degree of thermal maturation close to the window of hydrocarbons generation. The palynoflora association shows a low diversity of representatives, where among 292 palynomorphs with 28 genera and 11 species of pollen grains and spores, 167 are represented only by the species Classopollis classoides. Based on the present palynoflora association and the lithological analysis of the well, we can infer that sedimentation occurred in a fluvial-lacustrine deltaic paleoenvironment, under an arid to semi-arid atmosphere represented by the presence of abundant forms Rimuladas. Despite the non-detection of diagnostic forms of age guides, which define the palynozones of the paleostratigraphic framework valid for the Brazilian section of the lower Cretaceous (Classopollis classoides, Araucariacites australis, Equisetosporites sp.), the palynoflora recovered association indicates that these deposits are part of the Vitreisporites pallidus palynozone considered of age Aratu

Agência Nacional do Petróleo / O presente estudo baseou-se na análise do conteúdo orgânico de 173 amostras da Formação Pojuca, provenientes dos furos de sondagem 9-FBA-65-BA e 9-FBA-79-BA perfurados na Bacia do Recôncavo. Neste trabalho procedeu-se a um estudo integrando, resultados palinológicos, palinofaciológicos e de geoquímica orgânica com base nos dados de teores de Carbono Orgânico Total (COT) e de pirólise Rock-Eval. A associação palinoflorística identificada indica um paleoambiente dominantemente continental, composto por um sistema fluvial deltaico-lacustre, sob um clima quente e árido. Tal associação enquadra-se àquelas observadas nas bacias do Nordeste brasileiro e insere-se nas características das associações pertencentes à Província Microflorística Dicheiropollis (ex WASA). Foram identificadas 55 espécies de palinomorfos, incluindo grãos de pólen e esporos. A identificação das espécies, Dicheiropollis etruscus e Vitreisporites pallidus permitiu posicionar o intervalo analisado na Biozona Vitreisporites pallidus, considerada como de idade Aratu. Por meio de observação em microscopia óptica com luz branca transmitida e luz ultravioleta; e le-BA, caracterizando um conteúdo orgânico na janela de geração de hidrocarbonetos. Com base nos resultados de pirólise Rock-Eval, verificou-se que a Formação Pojuca, na área, é constituída vando-se em conta os tipos e o grau de preservação da matéria orgânica, foi possível individualizar três palinofácies distintas. As análises quantitativas do conteúdo orgânico mostram uma mistura de material orgânico de origem alóctone, representado por grãos de pólen, esporos e fitoclastos e autóctone dominada por material orgânico amorfo. As mais altas fluorescências são observadas nas Palinofácies 1 e 2, indicando um ambiente mais reduto r à época de sedimentação, destes estratos. Os dados de ICE apresentam valores de maturação de 5 para os sedimentos atravessados pelo poço 9-FBA-65-BA e 6,5-7 para o poço 9-FBA-79 na sua quase totalidade por matéria orgânica do tipo II, rica em hidrogênio e pobre em oxigênio, correspondendo ao um tipo de matéria orgânica propícia à geração de hidrocarbonetos líquidos e gasosos. Os níveis 3 e 4, localizados nas Palinofácies 1 e 2 do poço 9-FBA-79-BA apresentam valores de COT superiores a 1,5%, e considerando os dados de pirólise Rock-Eval, nota-se que estes intervalos são os que oferecem um maior potencial gerador, já que os valores de S2 excedem a 5,0 mg HC/g de rocha, além de valores de IH superiores a 200 e atingindo 600. / This study presents an integrated study encompassing palynological, palynofacies and organic geochemistry (particularly Total Organic Carbon [TOC] and pyrolysis) investigations. It was based on analysis of the organic content from 173 core samples of the Pojuca Formation collected from the 9-FBA-65-BA e 9-FBA-79-BA wells drilled in the Recôncavo Basin. The identified palynoflora suggest a predominantly continental depositional paleoenvironment, composed by a fluvial deltaic-lacustrine system in a hot and arid climate. Comparisons with overseas palynofloras support the hypothesis that this assemblage belongs to the Dicheiropolis (ex W.A.S.A) palynofloristic belt. Fift six palynomorphs species have been identified and partially illustrated. The identification of the Dicheiropollis etruscus and Vitreisporites pallidus species allows inserting these strata in the Vitreisporites pallidus Biozone, which is considered as Aratu in age. By observing optical microscopy transmitted white and ultraviolet light, it was possible to identify three distinct Palynofacies, taking into account the types and degree of preservation of organic matter. The quantitative analysis of organic content show a mixture of allochtone organic material, represented by pollen grains, spores and indigenous phytoclasts (woody tissue) and dominated by amorphous organic material. The highest observed fluorescence are present in the Palynofacies 1 and 2, indicating a more reducer conditions at the sedimentation environments of these strata. The SCI data present maturation values 5 for well 9 FBA-65-BA and 6.5-7 to the well 9 FBA-79-BA, inserting the organic material content in the hydrocarbon generation window. Based on the results of Rock-Eval pyrolysis, it was found that the Pojuca Formation samples is constituted by overwhelming majority of organic matter type II, rich in hydrogen and oxygen-poor, corresponding to a type of organic matter for the generation of liquid and gaseous hydrocarbons. Levels 3 and 4, belongs to the Palinofácies 1 and 2 of the 9 FBA-79-BA well and present TOC values greater than 1.5%. Considering the Rock-Eval pyrolysis data, its possible to affirm that these ranges are potential generator, since S2 values exceed 5.0 mg HCg, and IH values surpass 200 reaching 600.