Depositional environment of the Late Miocene Hausruck lignite (Alpine Foreland Basin): insights from petrography, organic geochemistry, and stable carbon isotopes

Bechtel, Achim; Gruber, W.; Sachsenhofer, Reinhard F.; Gratzer, Reinhard; Lücke, Andreas; Püttmann, Wilhelm

doi:10.1016/s0166-5162(02)00194-5

Cited by 90 publications

(22 citation statements)

References 45 publications

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“…The presence of a considerable amount of non-hopanoid triterpenoids implies that Table 2). The ratio of total diterpenoids to total non-hopanoid terpenoids, Di/(Di+Tri) (Bechtel et al 2002(Bechtel et al , 2003a, which is indicative for the contribution of gymnosperm vs. angiosperm vegetation decreased in the order pale yellow SXC > dark yellow SXC > brown SXC > black SXC (Table 2). In all samples sesquiterpenoids were present in lower amounts than di-and triterpenoids (Figs.…”

Section: Diterpenoids Non-hopanoid Triterpenoids and Sesquiterpenoidsmentioning

confidence: 99%

Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)

Đoković¹,

Mitrović²,

Životić³

et al. 2018

Geologica Carpathica

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Abstract:The maceral and biomarker characteristics of 4 sublithotypes of xylite-rich coal (SXCs), pale yellow, dark yellow, brown and black, originating from the Kolubara and Kostolac lignite basins were determined. Based on these results, differences in sources and changes of organic matter (OM) resulting in formation of 4 SXCs were established. Conifers (particularly Cupressaceae, Taxodiaceae and Pinacea) had a significant impact on the precursor OM of all SXCs. The contribution of gymnosperm vs. angiosperm vegetation decreased in order pale yellow SXC > dark yellow SXC > brown SXC > black SXC. The distribution of non-hopanoid triterpenoids indicates that change of SXC colour from yellow to black is associated with reduced input of angiosperm plants from the Betulacea family. Differences in hopane distribution, bitumen content, proportion of short-chain n-alkanes and degree of aromatization of di-and triterpenoids of pale yellow SXC are controlled by microbial communities which took part in the diagenetic alteration of OM. The content of total huminites increased from black to pale yellow SXC, whereas contents of total liptinite and inertinite macerals showed the opposite trend. SXCs differ according to textinite/ulminite ratio, which sharply decreased from pale yellow to black SXC, reflecting increase in gelification of woody tissue. Regarding the composition of liptinite macerals, the SXCs mostly differ according to resinite/liptodetrinite and resinite/suberinite ratios, which are higher in yellow than in brown and black SXC. This result along with values of TOC/N ratio and Carbon Preference Index indicate that the contribution of well preserved woody material, including lignin tissue vs. the impact of epicuticular waxes decreased from yellow to black SXC.

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Section: Diterpenoids Non-hopanoid Triterpenoids and Sesquiterpenoidsmentioning

confidence: 99%

Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)

Đoković¹,

Mitrović²,

Životić³

et al. 2018

Geologica Carpathica

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“…Researchers like Calder (1993) and Collinson and Scott (1987) believe that the palynological and paleobotanical data provide higher precision in the determination of paleoenvironment. Several researchers have objected the usage of such indices for Tertiary or low T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 TL1 TL2 TL3 TL4 TL5 TL6 (Bechtel et al 2002(Bechtel et al , 2003(Bechtel et al , 2007a(Bechtel et al , b, 2008Mayr et al 2009;Savard et al 2012;Singh et al 2012c) for the reconstruction of paleoenvironment. Kalkreuth et al (1991), Petersen (1993), andFlores (2002) further modified these indices to make them useful for the low rank coals too.…”

Section: Paleomiresmentioning

confidence: 99%

Petrographic characteristics and paleoenvironmental history of Eocene lignites of Cambay basin, Western India

Singh

et al. 2017

Int J Coal Sci Technol

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Lignite samples collected from Vastan, Rajpardi and Tadkeshwar lignite mines of Cambay basin (Gujarat) were subjected to organic petrographic investigations and geochemical analyses and the data, thus generated, is used to reconstruct the paleodepositional history of these lignite sequences. The lignites of Cambay basin dominantly comprise huminite maceral group (71.6%-86.3%) followed by liptinite (10.1%-19.3%) and inertinite (3.6%-11.0%) maceral groups. The mineral matter varies from 9.0% to 20.0%. The petrography based facies model indicates that these lignites have high values of gelification index (GI) and low tissue preservation index revealing a continuous wet condition in the basin and a relatively slower rate of subsidence during the decay of organic matter. On several occasions, during the formation of seams in Tadkeshwar, Rajpardi and Vastan mines, the value of GI exceeded 10 which indicates a forest permanently flooded and the cause of pronounced degree of degradation. However, few sections in Tadkeshwar seam had relatively drier spells of environmental conditions due to fluctuation in the water table as revealed by moderately high content of inertinite macerals. This is specially indicated by the occurrence of funginite which normally thrives in the upper oxygenated peatigenic layer and indicates prevalence of oxic conditions during plant deposition. Such conditions prevailed during a transgressive phase but there were intermittent fluvial activities also giving rise to supratidal flood plain as reflected in the form of associated carbonaceous shales in the basin.

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“…Several researchers have raised serious remarks for using these indices for low-rank coals (Lambersen et al 1991;Crosdale 1993;Dehmer 1995;Wust et al 2001;Scott 2002;Moore and Shearer 2003;Amijaya and Littke 2005). Several scientists have used a combined petrographic, organicgeochemical, and/or isotope data for understanding and reconstructing the environment of paleomire (Bechtel et al 2002(Bechtel et al , 2003Singh et al 2013). Kalkreuth et al (1991), Petersen, (1993), and Flores (2002 modified these indices to broaden their usage for low-rank coals.…”

Section: Depositional Environmentmentioning

confidence: 99%

Understanding the paleomires of Eocene lignites of Kachchh Basin, Gujarat (Western India): petrological implications

Singh

et al. 2017

Int J Coal Sci Technol

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The present paper entails the results of the investigations carried out on the lignite deposits of Kachchh Basin. The lignite samples were drawn from five lignite seams from Panandhro lignite field (Seam-I to -V) and eight lignite seams (Seam-I to -VIII) from the Matanomadh lignite field which are currently operational. The petrographic analysis of the lignites indicates a dominance of huminite group of macerals which is mainly contributed by ulminite-A, ulminite-B, attrinite, densinite, and phlobaphinite. Liptinite (chiefly sporinite, cutinite, resinite, and liptodetrinite) and inertinite (chiefly fusinite, funginite, and inertodetrinite) groups occur in subordinated amount. The mineral matter occurs in moderate concentration. Though sulfur content is high in these lignites, there is no fixed trend of variation of sulfur from bottom seam to top seam. The investigation reveals a flooded forest swamp having high rate of degradation. However, there were a few drier periods indicated by relatively more inertinite macerals. The petrography-based models indicate that the Kachchh lignites of Gujarat evolved in coastal marshy setting under transgressive phase. However, there were few intermittent fluvial activities giving rise to supratidal flood plain. This led to the formation of the associated carbonaceous shales in the basin.

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Depositional environment of the Late Miocene Hausruck lignite (Alpine Foreland Basin): insights from petrography, organic geochemistry, and stable carbon isotopes

Cited by 90 publications

References 45 publications

Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)

Petrographic and biomarker analysis of xylite-rich coal from the Kolubara and Kostolac lignite basins (Pannonian Basin, Serbia)

Petrographic characteristics and paleoenvironmental history of Eocene lignites of Cambay basin, Western India

Understanding the paleomires of Eocene lignites of Kachchh Basin, Gujarat (Western India): petrological implications

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