Biogenic methane and carbon dioxide generation in organic-rich shales from southeastern Brazil

Bertassoli, Dailson José; Sawakuchi, Henrique O.; Almeida, Nara; Castanheira, Bruna; Alem, Victor A. T.; Camargo, M. G. P.; Krusche, Alex V.; Brochsztain, Sergio; Sawakuchi, André Oliveira

doi:10.1016/j.coal.2016.05.013

Cited by 14 publications

(8 citation statements)

References 75 publications

(101 reference statements)

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“…Additionally, comparable quantities of kerogen-derived CO2 can also release under anaerobic conditions, which may become relevant under warming glaciers (e.g., Bertassoli Jr. et al, 2016;Rogieri Pelissari et al, 2021; see also Sharp et al, 1999;Sharp and Tranter, 2017). Therefore, it is unclear how much such potential super carbon source terrains supply a disproportionate quantity of radiocarbon dead CO2 to the atmosphere over glacial-interglacial transitions.…”

Section: A Canadian Tale and What About Microbes?mentioning

confidence: 99%

Ideas and perspectives: Emerging contours of a dynamic exogenous kerogen cycle

Blattmann¹

2021

Preprint

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Abstract. Growing evidence points to the dynamic role that kerogen is playing on Earth's surface in controlling atmospheric chemistry over geologic time. Although quantitative constraints on the weathering of kerogen remain loose, its changing weathering behavior modulated by the activity of glaciers suggest that this largest pool of reduced carbon on Earth may have played a key part in atmospheric CO2 variability across recent glacial-interglacial times and beyond. This work enunciates the possibility of kerogen oxidation as a major driver of atmospheric CO2 increase in the wake of glacial episodes. This hypothesis of centennial and millennial-timescale-relevance for this chemical weathering pathway is substantiated by several lines of independent evidence synthesized in this contribution including the timing of CO2 increase, CO2 isotopic composition (13C and 14C), seawater osmium record, kerogen oxidation kinetics, observations of kerogen reburial, and modeling results. The author hypothesizes that the deglaciation of kerogen-rich lithologies in western Canada contributed majorly to the characteristic deglacial increase in atmospheric CO2, which reached an inflection point ≤ 300 years after the Laurentide Ice Sheet retreated into the kerogen-poor Canadian Shield. To quantitatively constrain the contribution of kerogen oxidation to CO2 rise at glacial terminations, systematic studies on CO2 fluxes emanating from the weathering of different lithologies, oxidation kinetics of kerogen along glacial chronosequences, and high-resolution temporal changes in the aerial extent of glacially exposed lithological units are needed.

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Section: A Canadian Tale and What About Microbes?mentioning

confidence: 99%

Ideas and perspectives: Emerging contours of a dynamic exogenous kerogen cycle

Blattmann¹

2021

Preprint

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“…Canada has also achieved a commercial development of SG and a number of countries and regions carried on the prospecting or developing work and related pilot test of SG [9][10][11][12]. Other countries, such as Poland [13,14], Australia [15,16], England [17][18][19], South Africa [20,21], Brazil [22], India [23], pay much attention to the search of SG.…”

Section: Introductionmentioning

confidence: 99%

An Investigation of the Underlying Evolution of Shale Gas Research’s Domain Based on the Co-Word Network

Li¹,

Liu²,

Siqi³

et al. 2018

Sustainability

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Abstract:With the increasing shortage energy, the exploration and utilization of shale gas (SG) have greatly changed the world's natural gas supply pattern. In this study, based on a bibliometric review of the publications related to SG, by analyzing the co-word networks during the past years, we provide comprehensive analyses on the underlying domain evolution of shale gas research (SGR). Firstly, we visualize the topical development of SGR. We not only identify the key topics at each stage but also reveal their underlying dependence and evolutionary trends. The directions of SGR in the future are implied. Secondly, we find the co-word network has small-world and scale-free characteristics, which are the important mechanisms of driving the evolution of SGR's domain. Thirdly, we analyze China's SGR. We find the co-word network in China's SGR has not yet emerged obvious differentiation. Nevertheless, it has a similar self-organized evolution process with the co-word network of international SGR. Our above results can provide references for the future SGR of scholars, optimization or control of the domain and the strategy/policy of countries or globalization.

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“…Dolomitic carbonate levels in the Irati Formation can result from the mixture between inorganic carbon enriched meteoric waters with Mg enrich deep waters (Banerjee, 2016). However, Almeida (2018) attribute the dolomite to bio-precipitation: the microbial content enrichment associated with the Irati deposition (Bertassoli et al, 2016), and to consequent biogenic methane generation, would have played a role in the precipitation of dolomite (Almeida et al, 2020).…”

Section: Prospect Parametersmentioning

confidence: 99%

CO2 geological storage in organic-rich shales of the Irati Formation, Paraná Basin, Brazil

Rocha¹

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Agradeço primeiramente aos professores e pesquisadores que contribuíram com meu aprendizado e formação ao longo do doutoramento. Tive a oportunidade de trabalhar com os melhores profissionais de minha área de pesquisa na atualidade e sou muito grata por tudo que aprendi e pelo contato com pessoas tão admiráveis que me inspiraram a seguir na pesquisa.Dentre estes, agradeço principalmente ao Professor Colombo Tassinari, meu orientador desde o mestrado e a quem devo tudo que construí ao longo de minha formação acadêmica.À minha orientadora, Professora Lucy Sant'Anna, que foi minha principal fonte de apoio ao longo do doutorado e com quem aprendi a ser pesquisadora.Aos professores Cristina Rodrigues e Lemos de Sousa, que foram fundamentais para a conclusão do doutoramento por todo conhecimento e experiência com o tema de pesquisa.Aos professores e pesquisadores,

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Biogenic methane and carbon dioxide generation in organic-rich shales from southeastern Brazil

Cited by 14 publications

References 75 publications

Ideas and perspectives: Emerging contours of a dynamic exogenous kerogen cycle

Ideas and perspectives: Emerging contours of a dynamic exogenous kerogen cycle

An Investigation of the Underlying Evolution of Shale Gas Research’s Domain Based on the Co-Word Network

CO2 geological storage in organic-rich shales of the Irati Formation, Paraná Basin, Brazil

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