Paleogeography and paleoecology of the upper Miocene Zillingdorf lignite deposit (Austria)

Bechtel, Achim; Reischenbacher, Doris; Sachsenhofer, Reinhard F.; Gratzer, Reinhard; Lücke, Andreas

doi:10.1016/j.coal.2006.03.001

Cited by 39 publications

(24 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lipid biomarkers are used to study biogeochemical records in different ecosystems (Brassell et al 1986;Meyers 1997;Huang et al 1999;Marseille et al 1999;Bull et al 2000;Nott et al 2000;Pancost et al 2002) and the various sources of organic matter in different geological settings (Philp 1985;Spiker and Hatcher 1987;Moers et al 1990;de Leeuw et al 1993;van Kaam-Peters et al 1998;Kögel-Knabner 2002;Otto and Simpson 2006;Bechtel et al 2007;Marynowski et al 2007). The results of this study show that lipid compounds in stalagmites are preserved for very long periods of time.…”

Section: Paleoenvironmental Implicationsmentioning

confidence: 87%

“…In addition, the stable carbon isotope composition of particular lipid biomarkers can be applied to study the changes in biomass contribution (Canuel et al 1995). This has been applied successfully in lake and marine sediment (Spiker and Hatcher 1987;Freeman et al 1989;Canuel et al 1995;Lücke et al 1999;Bechtel et al 2007). The recent application of compound-specific isotope analysis (CSIA) to assess the sources of organic compounds in sediments (Rieley et al 1991;Cifuentes and Salata 2001;Schwab and Spangenberg 2007;Xu et al 2007) will be a useful approach to study the lipid biomarker sources in speleothem.…”

Section: Paleoenvironmental Implicationsmentioning

confidence: 98%

See 1 more Smart Citation

Composition and sources of lipid compounds in speleothem calcite from southwestern Oregon and their paleoenvironmental implications

et al. 2010

View full text Add to dashboard Cite

We analyzed speleothem calcite from the Oregon Caves National Monument, southwestern Oregon, to determine the preservation, distribution, concentrations and sources of aliphatic lipid compounds preserved in the calcite. Maximum speleothem growth rate occurs during interglaciations and minimum during glacial intervals. Concentrations of the total lipid compounds range from 0.5 to 12.9 lg g -1 . They increase at times of low speleothem growth rate, suggesting dilution, whereas the apparent accumulation rate of lipid compounds tends to be highest during times of fastest speleothem growth rate. Such increased accumulation generally corresponds to times of warm (interglacial) climate, suggesting either a greater source of organic materials during interglacial times and/or greater efficiency of compound capture during more rapid calcite growth. Aliphatic lipid compounds include homologous n-alkanoic acids, n-alkanols and methyl n-alkanoates and sterols with concentrations ranging from 0.3 to 7.8 lg g -1 , 0.4 to 1.1 lg g -1 , 0.5 to 9.6 lg g -1 and 0.1 to 2.7 lg g -1 , respectively. Minor amounts of branched methyl n-alkanoates and dimethyl n-alkanedioates are also present. The high concentrations of methyl n-alkanoates are the result of esterification reactions of free fatty acids in alkaline solutions with high pH values associated with the dripping cave waters. The distribution patterns and geochemical parameters and indices indicate that the major sources of the aliphatic lipids involved leaching from higher plants and microbial residues derived from the soil zone above the cave system. The estimated percentage of microbial inputs ranged from 42 to 90% of the total lipids and also showed an increase in accumulation during warm climates. These well-preserved lipid compounds in speleothem calcite could be used as biomarkers for paleoenvironmental study.

show abstract

Section: Paleoenvironmental Implicationsmentioning

confidence: 87%

Section: Paleoenvironmental Implicationsmentioning

confidence: 98%

Composition and sources of lipid compounds in speleothem calcite from southwestern Oregon and their paleoenvironmental implications

et al. 2010

View full text Add to dashboard Cite

show abstract

“…7 and 8). However, opposite heavierupward trends occur in the Gippsland Basin data in coal seams younger than ∼19 Ma (the 78 m boundary), and in a similar manner a heavy upward isotope trend is present in Upper Miocene coal seams of the Vienna Basin (Bechtel et al, 2007). Therefore, because there are various upward-heavy or upward-light isotopic-stratigraphic trends within the various coal seams, the causative factors are unlikely to result from hydroseral succession, peat swamp evolution, progressive peat degradation, or coalification.…”

Section: Comparison With Other Low Rank Coal Isotope Datamentioning

confidence: 68%

“…Elsewhere, previous fine scale carbon isotope analyses in low-rank coals have been carried out on a ∼32 m-thick Palaeocene coal seam of the Powder River Basin in the USA (Holmes and Flores, 1991), two 25 m-thick Middle and Late Miocene coal seams in the German Lower Rhine and Austrian Vienna basins (Jones et al, 1997;Lucke et al, 1999;Bechtel et al, 2007), and a 50 m thick Lower Oligocene brown coal seam in Ireland (Large, 2007). Other carbon isotope analyses, but with less internal coal seam detail, have been undertaken on Cenozoic brown coal seams in Central Europe (Hamor-Vido and Hamor, 2007;Bechtel et al, 2008).…”

Section: Comparison With Other Low Rank Coal Isotope Datamentioning

confidence: 99%

Eocene–Miocene carbon-isotope and floral record from brown coal seams in the Gippsland Basin of southeast Australia

Holdgate

McGowran

Fromhold

et al. 2009

Global and Planetary Change

View full text Add to dashboard Cite

“…Also, the predominance of odd n-alkanes and the dominance of n-C 29 imply trees as an important source of organic matter. Moreover, diterpenoids, such as retene and dehydroabietane (abietic acid derivatives), document the presence of gymnosperm plants mostly from the Cupressacae/Taxodiaceae families (Bechtel et al, 2007;Fabia nska, 2007). Oleanane, lupane and ursane derivatives, as well as chrysenes and picenes (Table 3), show a high input of angiosperm plants, reworked by microbial activity (e.g.…”

Section: Sedimentary Versus Diagenetic Processesmentioning

confidence: 99%

Root‐related rhodochrosite and concretionary siderite formation in oxygen‐deficient conditions induced by a ground‐water table rise

et al. 2015

View full text Add to dashboard Cite

Sedimentological, mineralogical, stable carbon and oxygen isotope determinations and biomarker analyses were performed on siderite concretions occurring in terrestrial silts to understand their formation and to characterize the sedimentary and diagenetic conditions favouring their growth. High δ13C values (6·4‰ on average) indicate that siderite precipitated in an anoxic environment where bacterial methanogenesis operated. The development of anoxic conditions during shallow burial was induced by a change in sedimentary environment from flood plain to swamp, related to a rise of the ground‐water table. Large amounts of decaying plant debris led to efficient oxygen consumption within the pore‐water in the peat. Oxygen depletion, in combination with a decrease in sedimentation rate, promoted anoxic diagenetic conditions under the swamp and favoured abundant siderite precipitation. This shows how a change in sedimentary conditions can have a profound impact on the early‐diagenetic environment and carbonate authigenesis. The concretions contain numerous rhizoliths; they are cemented with calcium‐rhodochrosite, a feature which has not been reported before. The rhodochrosite cement has negative δ13C values (−16·5‰ on average) and precipitated in suboxic conditions due to microbial degradation of roots coupled to manganese reduction. The exceptional preservation of the epidermis/exodermis and xylem vessels of former root tissues indicates that the rhodochrosite formed shortly after the death of a root in water‐logged sediments. Rhodochrosite precipitated during the initial stages of concretionary growth in suboxic microenvironments within roots, while siderite cementation occurred simultaneously around them in anoxic conditions. These suboxic microenvironments developed because oxygen was transported from the overlying oxygenated soil into sediments saturated with anoxic water via roots acting as permeable conduits. This model explains how separate generations of carbonate cements having different mineralogy and isotopic compositions, which would conventionally be regarded as cements precipitated sequentially in different diagenetic zones during gradual burial, can form simultaneously in shallow burial settings where strong redox gradients exist around vertically oriented permeable root structures.

show abstract

Paleogeography and paleoecology of the upper Miocene Zillingdorf lignite deposit (Austria)

Cited by 39 publications

References 49 publications

Composition and sources of lipid compounds in speleothem calcite from southwestern Oregon and their paleoenvironmental implications

Composition and sources of lipid compounds in speleothem calcite from southwestern Oregon and their paleoenvironmental implications

Eocene–Miocene carbon-isotope and floral record from brown coal seams in the Gippsland Basin of southeast Australia

Root‐related rhodochrosite and concretionary siderite formation in oxygen‐deficient conditions induced by a ground‐water table rise

Contact Info

Product

Resources

About