scholarly journals Effects of Igneous Intrusion on the Organic Content of Irati Formation, Paraná Basin, in Sapopema (PR)

2020 ◽  
Vol 43 (4) ◽  
Author(s):  
Werlem Holanda ◽  
Anderson Costa dos Santos ◽  
Camila Cardoso Nogueira ◽  
Sérgio Bergamaschi ◽  
René Rodrigues ◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Organic Matter Content ◽  
Organic Content ◽  
Insoluble Residue ◽  
Sem Images ◽  
Igneous Intrusion ◽  
Irati Formation ◽  
Paraná Basin ◽  
Parana Basin

The thermal effects of an igneous intrusion on organic-rich sedimentary rocks can be considering an important source of maturation of organic matter. The Permian Irati Formation of Paraná Basin (Brazil) is a carbonatic and organic-rich shale sequence intruded by Jurassic-Cretaceous basic rocks. This study reports possible effects of igneous intrusion on the organic matter content of Irati Formation, in Sapopema region (Paraná State). Total organic carbon (TOC), total sulfur (S) and insoluble residue (IR) data were combined with scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The relatively low TOC values recorded in well where Irati Formation is in contact with 60 m of diabase sill (SP-58-PR) are residuals, associated with the depletion of organic carbon, caused by the thermal effect from the overlying intrusive rock. It was responsible to promote the cracking of the organic matter and reduced those values in relation to the original ones, observed in SP-32-PR (without thermal influence). When comparing the TOC peaks of the Assisting Member in both wells, it was observed that there was a decrease between 80.7 and 84% in the SP-58-PR. SEM images reveal that organic matter in Taquaral Member is sub-rounded and regular shape, while the organic matter in Assistência Member presents a characteristic pattern of thermally evolved organic matter.

scholarly journals CHARACTERIZATION OF THE ASSISTÊNCIA MEMBER, IRATI FORMATION, PARANÁ BASIN, BRAZIL: ORGANIC MATTER AND MINERALOGY / CARACTERIZAÇÃO DO MEMBRO DO ASSISTÊNCIA, FORMAÇÃO IRATI, BACIA DO PARANÁ, BRASIL: MATÉRIA ORGÂNICA E MINERALOGIA

2016 ◽  
Vol 3 (1) ◽  
pp. 36-45 ◽  
Author(s):  
Werlem Holanda ◽  
Sergio Bergamaschi ◽  
Anderson Costa dos Santos ◽  
René Rodrigues ◽  
Luiz Carlos Bertolino
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Fuel Oil ◽  
Insoluble Residue ◽  
X Ray ◽  
Irati Formation ◽  
Paraná Basin ◽  
Rock Eval ◽  
Parana Basin

Currently, the Irati Formation, in Paraná Basin, Brazil, represents one of the world's largest reserves of oil shale. Among the shale-derived products stands out the fuel oil, gas, naphtha, fuel, liquefied gas, and sulfur, in addition to byproducts that can be used by the asphalt, cement, agricultural, and ceramics industries. This study describes and illustrates features of organic-rich shales of the Lower Permian Assistência Member, Irati Formation, scanning electron microscopy (SEM) was combined with energy-dispersive x-ray spectrometric (EDS), x-ray diffraction (XRD), total organic carbon (TOC), total sulfur (S), insoluble residue (IR) and Rock-Eval pyrolysis to characterize the mineral composition, organic matter distribution and different types of pore at the micrometer scale. These analyses were performed on samples from well SP-32-PR located in the Sapopema township, Northeast Paraná State, in South of Brazil. The investigations demonstrated that the Assistance Member has high total organic carbon (TOC) content, generation potential (S2) and hydrogen index (HI), but is in an immature stage. The mineralogical content of the Assistência Member presents intervals rich in quartz, plagioclase, carbonates and clay minerals. Pores distribution includes intraparticle within organic matter and interparticle pores in pyrite framboids, surrounding quartz grains and between organic matter and mineral grains. ResumoAtualmente, a Formação Irati, na Bacia do Paraná, no Brasil, representa uma das maiores reservas mundiais de Petróleo de xisto. Entre os produtos derivados do xisto, destacam-se o óleo combustível, gás, nafta, combustível, gás liquefeito e enxofre, além de subprodutos que podem ser utilizados pelas indústrias de asfalto, cimento, agricultura e cerâmica. Este estudo descreve e ilustra características de xistos ricos em matéria orgânica do Membro Permiano Inferior Assistência, Formação Irati. Microscopia eletrônica de varredura (SEM) foi combinada com Espectrometria de Raios-X de energia dispersiva (EDS), Difração de Raios-X (XRD), carbono orgânico total (COT), enxofre total (S), resíduo insolúvel (IV) e pirólise Rock-Eval para a caracterização da composição mineral, distribuição da matéria orgânica e diferentes tipos de poros à escala micrométrica. Essas análises foram realizadas em amostras do poço SP-32-PR localizadas no município de Sapopema, no nordeste do Paraná, no sul do Brasil. As investigações demonstraram que o Membro de Assistência possui elevado teor de carbono orgânico total (TOC), potencial de geração (S2) e índice de hidrogênio (HI), mas está em um estágio imaturo. O conteúdo mineralógico do Membro Assistência apresenta intervalos ricos em quartzo, plagioclásio, carbonatos e minerais argilosos. A distribuição dos poros inclui intra-partículas na matéria orgânica e poros inter-partículas em framboides de pirita, nos grãos de quartzo circundantes e na matéria orgânica e noutros grãos minerais.

scholarly journals FACIES ANALYSIS APPLIED TO IRATI FORMATION IN THE NORTHERN AREA OF THE PARANÁ BASIN, GOIÁS STATE – A CONTRIBUTION FOR A DEPOSITIONAL MODEL

2019 ◽  
Vol 4 (1) ◽  
pp. 72-89
Author(s):  
Andressa Azevedo Oishi ◽  
Egberto Pereira ◽  
Lucas Pinto Heckert Bastos ◽  
Daniel Galvão Carnier Fragoso
Keyword(s):  
Organic Carbon ◽  
Carbon Content ◽  
High Energy ◽  
Lower Permian ◽  
Organic Carbon Content ◽  
Facies Association ◽  
Geological Processes ◽  
Irati Formation ◽  
Paraná Basin ◽  
Parana Basin

The Irati Formation (Lower Permian of Paraná Basin) is a lithostratigraphic unit characterized by the rhythmic alternation between carbonates, shales, and marls, interpreted as low energy deposits with eventual storm deposition. Despite many studies that were developed at Irati Formation in the south and southeast part of Brazil, a better comprehension of the geological processes that took place in the northern portion is still necessary. In this sense, we present a detailed sedimentological analysis coupled with organic carbon content for the Permian rocks of Paraná Basin at Goiás State. Based on sedimentological descriptions, six facies association, including low to high energy facies, were described and interpreted as deposits of an inner to outer ramp domains of a homoclinal ramp system. Our data also indicate a relationship between changes in facies association and organic carbon content variation. TítuloANÁLISE DE FACIES SEDIMENTARES APLICADA À FORMAÇÃO IRATI NA ÁREA NORTE DA BACIA DO PARANÁ, GOIÁS - UMA CONTRIBUIÇÃO PARA O MODELO DE DEPOSIÇÃOResumoA Formação Irati (Permiano inferior da Bacia do Paraná, Brasil) é uma unidade litoestratigráfica caracterizada pela alternância rítmica de carbonatos, folhelhos e margas, considerados depósitos de baixa energia intercalados pela deposição eventual de tempestitos. Apesar de terem sido efetuados muitos estudos na Formação Irati, no sul e sudeste do Brasil, ainda é necessária uma melhor compreensão dos processos geológicos que ocorreram na sua porção norte. Por isso, este trabalho apresenta uma análise sedimentológica detalhada associada ao teor de carbono orgânico em rochas do Permiano da Bacia do Paraná, no estado de Goiás. Com base em descrições sedimentológicas, seis associações de fácies, incluindo fácies de baixa a elevada energia, foram consideradas depósitos de rampa interna a externa, de um sistema de rampa homoclinal. Os dados obtidos permitem também analisar a relação entre mudanças na associação de fácies e a variação do conteúdo de carbono orgânico sedimentar. Palavras-chave: Bacia do Paraná. Formação Irati. Análise de fácies sedimentares. Associação de fácies. Sistema deposicional.

Not a lycopsid but a cycad-like plant: Iratinia australis gen. nov. et sp. nov. from the Irati Formation, Kungurian of the Paraná Basin, Brazil

2021 ◽  
Vol 289 ◽  
pp. 104415
Author(s):  
Rafael Spiekermann ◽  
André Jasper ◽  
Anelise Marta Siegloch ◽  
Margot Guerra-Sommer ◽  
Dieter Uhl
Keyword(s):  
Irati Formation ◽  
Paraná Basin ◽  
Parana Basin

scholarly journals Impacts of vinasse and methods of sugarcane harvesting on the availability of K and carbon stock of an Argisol

Revista CERES ◽  
2016 ◽  
Vol 63 (1) ◽  
pp. 95-102 ◽  
Author(s):  
Claudinei Alberto Cardin ◽  
Carlos Henrique dos Santos ◽  
Marcos Antonio Escarmínio
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Carbon Stock ◽  
Organic Matter Content ◽  
Matter Content ◽  
Total Carbon ◽  
Native Forest ◽  
Mean Values ◽  
Tropical Regions ◽  
Soil Carbon Stock

ABSTRACT Soils of tropical regions are more weathered and in need of conservation managements to maintain and improve the quality of its components. The objective of this study was to evaluate the availability of K, the organic matter content and the stock of total carbon of an Argisol after vinasse application and manual and mechanized harvesting of burnt and raw sugarcane, in western São Paulo.The data collection was done in the 2012/2013 harvest, in a bioenergy company in Presidente Prudente/SP. The research was arranged out following a split-plot scheme in a 5x5 factorial design, characterized by four management systems: without vinasse application and harvest without burning; with vinasse application and harvest without burning; with vinasse application and harvest after burning; without vinasse application and harvest after burning; plus native forest, and five soil sampling depths (0-10 10-20, 20-30, 30-40, 40-50 cm), with four replications. In each treatment, the K content in the soil and accumulated in the remaining dry biomass in the area, the levels of organic matter, organic carbon and soil carbon stock were determined. The mean values were compared by Tukey test. The vinasse application associated with the harvest without burning increased the K content in soil layers up to 40 cm deep. The managements without vinasse application and manual harvest after burning, and without vinasse application with mechanical harvesting without burning did not increase the levels of organic matter, organic carbon and stock of total soil organic carbon, while the vinasse application and harvest after burning and without burning increased the levels of these attributes in the depth of 0-10 cm.

scholarly journals 3D implicit modeling applied to the evaluation of CO2 geological storage in the shales of the Irati Formation, Paraná Basin, Southeastern Brazil

2021 ◽  
Author(s):  
Saulo B. de Oliveira ◽  
Colombo C. G. Tassinari ◽  
Richardson M. A-A. ◽  
Ignacio Torresi
Keyword(s):  
Black Shales ◽  
Hydrocarbon Exploration ◽  
Southeastern Brazil ◽  
Geological Storage ◽  
Spatial Continuity ◽  
Irati Formation ◽  
Aquifer Systems ◽  
Paraná Basin ◽  
Implicit Modeling ◽  
Parana Basin

Abstract The Paris Agreement established global ambitious targets for reducing carbon dioxide (CO2) emissions, requiring the rapid and extensive development of low carbon technologies, and one of the most efficient is CO2 geological storage. Among the deep geological formations used for CO2 storage, the shale layers have been a new emerging topic showing to be efficient because they are abundant and have a high content of organic matter, being favorable for CO2 retention. However, one of the challenges in evaluating a location for possible reservoirs is the adequate geological characterization and storage volume estimates. This research evaluated the Irati Formation of the Paraná Basin, through the information from hydrocarbon exploration wells in Southeastern Brazil, where most stationary sources of carbon emissions are located. Three-dimensional (3D) implicit modeling techniques were applied not only for the volume calculation purpose, but also in the site selection stage, generating thematic 3D models of thickness, depth, structures, and distance to aquifer systems. The limestones, shales, and black shales of the Irati Formation were locally divided into six units according to geological composition and spatial continuity. The E black shale unit was considered for CO2 geological storage indicating a theoretical capacity of 1.85 Gt of CO2. The potential of the achieved capacity is promising not only for been greater than the total of CO2 locally produced but also for supporting the implantation of new projects in this region.

Constant current chronopotentiometric stripping characterisation of organic matter in seawater from the northern Adriatic, Croatia

2014 ◽  
Vol 11 (2) ◽  
pp. 158 ◽  
Author(s):  
Slađana Strmečki ◽  
Jelena Dautović ◽  
Marta Plavšić
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Seasonal Changes ◽  
Electrochemical Techniques ◽  
Organic Matter Content ◽  
Matter Content ◽  
Constant Current ◽  
Po River ◽  
Northern Adriatic ◽  
Catalytically Active

Environmental context We determined seasonal changes in the organic matter content of the northern Adriatic with newly applied electrochemical techniques able to measure catalytically active organics. The inflow of the Po River and its nutrient load are responsible for the observed changes in the type and concentrations of organic matter in the area. Abstract Catalytically active polysaccharides (Cat PSs) and nitrogen-containing polymeric organic material (N-POM) were determined in seawater from the northern Adriatic station ST101. Catalytically active organics were measured by applying electrochemical methods of adsorptive transfer chronopotentiometric stripping with medium exchange and chronopotentiometric stripping in unmodified seawater. Their concentrations were expressed in milligrams per cubic decimetre–3--> of equivalents of the model calibrating substances, polysaccharide xanthan and protein human serum albumin. The optimal electroanalytical conditions for determination of Cat PSs in seawater were evaluated and defined. Seasonal changes of Cat PSs and N-POM were observed during the period 2011–2013. The highest values were determined in the spring–summer period and the lowest in winter. Cat PSs and N-POM were present in both the dissolved and particulate organic carbon fractions. Cat PSs and N-POM showed a statistically significant positive correlation with the concentrations of surface-active substances. A weak but statistically significant correlation was found between Cat PSs and dissolved organic carbon concentrations. Copper complexing capacities in the period 2011–2013 were in the range of 41–130nmoldm–3.

Degradation-resistant biomarkers in the Pirambóia Formation tar sands (Triassic) and their correlation with organic facies of the Irati Formation source rocks (Permian), Paraná Basin (Brazil)

2020 ◽  
Vol 104 ◽  
pp. 102873
Author(s):  
Maria Adriana M. dos Santos ◽  
Caroline A. do Nascimento ◽  
Eliane S. Souza ◽  
Laercio L. Martins ◽  
Hélio Jorge P. Severiano Ribeiro ◽  
...  
Keyword(s):  
Source Rocks ◽  
Tar Sands ◽  
Organic Facies ◽  
Irati Formation ◽  
Paraná Basin ◽  
Parana Basin

Standard magnetic properties in three mountain lakes of northern Iberia, ¿what is the influence of the major environmental processes?

2020 ◽  
Author(s):  
Belén Oliva-Urcia ◽  
Ana Moreno ◽  
Blas Valero-Garcés
Keyword(s):  
Magnetic Properties ◽  
Organic Matter ◽  
Rock Magnetism ◽  
Organic Matter Content ◽  
Organic Content ◽  
Matter Content ◽  
Magnetic Minerals ◽  
Magnetic Signal ◽  
Subtle Change ◽  
Catchment Areas

<p>Paleoenvironmental reconstructions from three mountaineous lakes located in northern Iberia are compared and completed with classical magnetic analyses in order to detect the influence of different processes on the record and preservation of magnetic properties. The lakes are located in the Cantabrian Mountains, Enol Lake, and in the Pyrenees, the Marboré Lake and Basa de la Mora Lake and share a similar composition of their catchment areas, dominated by limestones. They present other different characteristics, such as in the organic matter content, being Enol the one with the highest organic carbon values. Redox indicator (Mn/Fe) is higher and more variable in Basa de la Mora Lake, whereas in Enol and Marboré Lakes steadily increases towards the top of the sequences. New and revisited results from sedimentary cores unravel the significance of the magnetic changes respect to the geochemical and sedimentological variations found in the geological record.</p><p>The magnetic mineralogy present after analyses done in discrete samples (less than 500 mg) is magnetite in all samples, due to a sharp decrease at 120 K (Verwey crystallographic transition) and 580ºC (Curie temperature of magnetite) in the thermomagnetic curves performed in the MPMS and the Curie balance respectively. No indication of neither pyrrhotite (phase transition at 35 K) nor siderite is observed. The high temperature thermomagnetic analyses show the presence and creation of magnetite during heating, see an increasing of induced magnetization forming a broad peak above 450ºC in the heating curve. In addition, a subtle change in the induced magnetization is observed at around 300ºC. All analyses related with coercivity indicate the predominance of low coercitive minerals (“soft”) as magnetite is.</p><p>The combination of geochemical, sedimentological and magnetic proxies suggest that in Enol Lake the magnetic signal may be dominated by the formation of new minerals in relation to redox processes favored by the higher presence of organic matter (6%organic content), whereas in Marboré Lake, the increase of the magnetic signal toward the top of the sequence seems related to the oxic environment and the preservation of magnetite, since this lake is ultra-oligotrophic. In Basa de la Mora Lake, the source rock seems to play a role in the magnetic signal of the sequence.</p><p>These results indicate that diagenesis and changes in the redox conditions alter the concentration of magnetic minerals during the Late Pleistocene and Holocene and underlines their value as environmental and paleoclimate archives.</p><p><strong>Acknowledgements</strong></p><p>Funding for this research was provided by the Spanish Inter-Ministry Commission of Science and Technology through MEDLANT (CGL2016-76215-R) and DINAMO 3 (Ref CGL2015-69160-R) projects and by the European Commission (EFA056/15 REPLIM). The Institute for Rock Magnetism (IRM), the Instrumentation and Facilities program of the National Science Foundation of the Earth Science Division and the University of Minnesota are acknowledged for supporting visits and the free use of the facilities at the IRM, together with the both easy-going and expert guidance from the IRM staff.</p>

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