A thermal maturity map based on vitrinite reflectance of British coals

Bullock, Liam A.; Parnell, John; Muirhead, David; Armstrong, Joe; Schito, Andrea; Corrado, Sveva

doi:10.1144/jgs2019-055

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…Currently, the problems of oil and gas bearing potential of foredeeps are relevant all over the world [1,4,5]. The studies of petroleum source rocks, assessment of their generation potential, transformation of organic matter (OM), characteristics of the lithological-facies features of petroleum source rocks and enclosing strata are carried out.…”

Section: Introductionmentioning

confidence: 99%

“…The studies of petroleum source rocks, assessment of their generation potential, transformation of organic matter (OM), characteristics of the lithological-facies features of petroleum source rocks and enclosing strata are carried out. Trough zones of fold-thrust areas in various regions of the world (Zagros fold system (Iran, Iraq), basins of Maturin (Venezuela), Chaco (Bolivia, Argentina), Llanos (Colombia), Tarim (China)) are among the largest areas in terms of oil and gas production [1,3,4].…”

Section: Introductionmentioning

confidence: 99%

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Organic matter, its generation potential, and the composition of the Artinskian deposits of the north of the Pre-Ural Foredeep (Timan-Pechora Province)

Kotik

Saldin²

2022

Vestnik of Geosciences

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This article discusses the results of lithological and geochemical studies of the Artinskian deposits and organic matter, which is a part of the petroleum source rocks of the northern part of the Pre-Ural Foredeep of the Timan-Pechora Province. The rocks are very diverse in composition (clastolites, pelitolites, carbonatolites and mixtolites) and structural and textural features. Mixtoliths are widespread in shallow-marine environments (lower molasse deposits), which are associated with mixed terrestrial and marine organic matter. We recorded the predominance of poor and fair petroleum source rocks due to increasing terrigenous component. Mixtoliths of the Kochmes area (HI of 240 mg HC/g TOC) are characterized by the best generation potential. Organic petrography studies indicate the predominance of bituminite (sapropel base) in the composition of organic matter, the terrigenous components dominates in the eastern regions adjacent to the Urals.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Organic matter, its generation potential, and the composition of the Artinskian deposits of the north of the Pre-Ural Foredeep (Timan-Pechora Province)

Kotik

Saldin²

2022

Vestnik of Geosciences

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“…The analysis of coals and dispersed organic matter (DOM) is an irreplaceable tool in thermal maturity assessment and environmental studies of sedimentary successions [1]. In thermal model calibration for petroleum exploration and basin analysis, vitrinite reflectance is still the most accurate and reliable indicator [2][3][4][5]. On the other hand, vitrinite discrimination among different organic facies has always been a critical issue for a correct assessment of thermal maturity [6,7], in particular when other low reflecting macerals occur [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A Predictive Model for Maceral Discrimination by Means of Raman Spectra on Dispersed Organic Matter: A Case Study from the Carpathian Fold-and-Thrust Belt (Ukraine)

et al. 2021

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In this study, we propose a predictive model for maceral discrimination based on Raman spectroscopic analyses of dispersed organic matter. Raman micro-spectroscopy was coupled with optical and Rock-Eval pyrolysis analyses on a set of seven samples collected from Mesozoic and Cenozoic successions of the Outer sector of the Carpathian fold and thrust belt. Organic petrography and Rock-Eval pyrolysis evidence a type II/III kerogen with complex organofacies composed by the coal maceral groups of the vitrinite, inertinite, and liptinite, while thermal maturity lies at the onset of the oil window spanning between 0.42 and 0.61 Ro%. Micro-Raman analyses were performed, on approximately 30–100 spectra per sample but only for relatively few fragments was it possible to perform an optical classification according to their macerals group. A multivariate statistical analysis of the identified vitrinite and inertinite spectra allows to define the variability of the organofacies and develop a predictive PLS-DA model for the identification of vitrinite from Raman spectra. Following the first attempts made in the last years, this work outlines how machine learning techniques have become a useful support for classical petrography analyses in thermal maturity assessment.

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“…These aspects are relevant in fold and thrust belts characterised by the juxtaposition of rocks with a different thermal peak where both strike-slip and extensional tectonics can rework the thrust stack during the later stages of deformation. In such cases, organic parameters of the thermal evolution of sedimentary rocks are often used to obtain a tectonic loading produced by orogeny [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Thermal Maturity of the Grajcarek Unit (Pieniny Klippen Belt): Insights for the Burial History of a Major Tectonic Boundary of the Western Carpathians

Zielińska

2021

Minerals

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The Grajcarek Unit of the Pieniny Klippen Belt (PKB), at the boundary between the Central (Inner) and Outer Carpathians, resulted from the convergence of the ALCAPA (the Alps–Carpathians–Pannonia) block and European plate. The strongly deformed slices of the Grajcarek Unit consist of Jurassic–Cretaceous sedimentary rocks associated with Late Cretaceous–Middle Palaeocene synorogenic wild-flysch, and sedimentary breccias with olistoliths. Maximum burial temperatures and burial depths were estimated based on vitrinite reflectance data. The vitrinite reflectance values were wide scattered through the Grajcarek sedimentary succession, especially in the flysch formations. This is attributed mainly to the depositional effects that affected the vitrinite evolution. The determined maximum burial temperatures were interpreted due to the regional compression controlled by tectonic burial coeval with thrusting and strike-slip faulting. The regional vitrinite reflectance variations might estimate cumulative displacement around the NNW–SSE and oriented the strike-slip Dunajec fault, which is a continuation of the deep fracture Kraków–Myszków fault zone.

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A thermal maturity map based on vitrinite reflectance of British coals

Cited by 7 publications

References 35 publications

Organic matter, its generation potential, and the composition of the Artinskian deposits of the north of the Pre-Ural Foredeep (Timan-Pechora Province)

Organic matter, its generation potential, and the composition of the Artinskian deposits of the north of the Pre-Ural Foredeep (Timan-Pechora Province)

A Predictive Model for Maceral Discrimination by Means of Raman Spectra on Dispersed Organic Matter: A Case Study from the Carpathian Fold-and-Thrust Belt (Ukraine)

Thermal Maturity of the Grajcarek Unit (Pieniny Klippen Belt): Insights for the Burial History of a Major Tectonic Boundary of the Western Carpathians

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