Georg Scheeder
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View article: Extensive oil, ethane and propane discharge at the mega seepage system of Lusi, Indonesia
Extensive oil, ethane and propane discharge at the mega seepage system of Lusi, Indonesia Open
Natural hydrocarbon seepages constitute a substantial influx of oil and gas into hydrosphere and atmosphere, impacting the environment and greenhouse gas budgets. The Lusi seepage system (Indonesia) is one of the Earth’s largest surface hy…
View article: Enrichment of organic carbon in a deep‐water sand‐prone turbidite system: A study from the Eocene Aínsa Basin (Spanish Pyrenees)
Enrichment of organic carbon in a deep‐water sand‐prone turbidite system: A study from the Eocene Aínsa Basin (Spanish Pyrenees) Open
Dilute sediment gravity flows transporting fine‐grained sediments such as silt or clay in suspension are thought to be the principal carriers of organic carbon into the deep sea. However, observations from submarine fan datasets show that …
View article: Microbial turnover of hydrocarbons at a leaking abandoned oil well in Germany
Microbial turnover of hydrocarbons at a leaking abandoned oil well in Germany Open
With a contribution of about one third, methane is the second most important greenhouse gas in the climate system. In addition to a biogenic formation, e.g. in wetlands, methane also is emitted during anthropogenic industrial activities. B…
View article: Rapidly changing environmental conditions in a coastal setting during the Berriasian (“German Wealden”, lower Cretaceous): evidence from biomarker and bulk geochemical data
Rapidly changing environmental conditions in a coastal setting during the Berriasian (“German Wealden”, lower Cretaceous): evidence from biomarker and bulk geochemical data Open
During the Middle to Late Berriasian (so called “German Wealden”) a large lake system developed in the Lower Saxony Basin (LSB; in northwestern Germany) of which the eastern part is characterized by varying fluvial and lacustrine influence…
View article: Characterization and spatial distribution of mesoplastics in an arable soil
Characterization and spatial distribution of mesoplastics in an arable soil Open
Extraction of plastic particles from soil is challenging and, thus, exceptionally little spatial information on plastic distribution at the field scale has been gathered. However, for environmental risk assessment, adequate sampling should…
View article: Biomarker Reconstruction of a High‐Latitude Late Paleocene to Early Eocene Coal Swamp Environment Across the PETM and ETM‐2 (Ellesmere Island, Arctic Canada)
Biomarker Reconstruction of a High‐Latitude Late Paleocene to Early Eocene Coal Swamp Environment Across the PETM and ETM‐2 (Ellesmere Island, Arctic Canada) Open
The Paleocene‐Eocene Thermal Maximum (PETM) and early Eocene hyperthermal events were characterized by a Hothouse climate state. Our understanding of the climatic impact of these hyperthermals is currently biased toward marine settings and…
View article: Palladium-doped and undoped polystyrene nanoplastics in a chronic toxicity test for higher plants: Impact on soil, plants and ammonium oxidizing bacteria
Palladium-doped and undoped polystyrene nanoplastics in a chronic toxicity test for higher plants: Impact on soil, plants and ammonium oxidizing bacteria Open
There is a lack of knowledge about the fate and impact of microplastics (MPs) and nanoplastics (NPs), as well as their potential uptake and impact on plants and microorganisms. The predicted environmental concentrations (PEC) of frequent p…
View article: Status quo of operation procedures for soil sampling to analyze microplastics
Status quo of operation procedures for soil sampling to analyze microplastics Open
Since 2015, the determination of microplastics (MPs; < 5 mm) in soil has gained increasing attention. However, usual analytical protocols still render a comparison of results challenging. This structured review integrates an in-depth scree…
View article: Biomarker insights into a methane-enriched Holocene peat-setting from “Doggerland” (central North Sea)
Biomarker insights into a methane-enriched Holocene peat-setting from “Doggerland” (central North Sea) Open
Peats formed widespread early after the Last Glacial Maximum around the coast of the Dogger Bank, the central high of the now flooded “Doggerland” (central North Sea). Here we present biomarker and gas geochemical insights into near-surfac…
View article: Oil and gas seepage offshore Georgia (Black Sea) – Geochemical evidences for a paleogene-neogene hydrocarbon source rock
Oil and gas seepage offshore Georgia (Black Sea) – Geochemical evidences for a paleogene-neogene hydrocarbon source rock Open
Highlights
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\n• Four seafloor hydrocarbon emissions in the Eastern Black Sea were investigated
\n• Eocene and/or Oligocene-Miocene Formations are most likely sources for oil and gas
\n• Mixed secondary microbial and oil-associated thermo…
View article: Geochemical implications from direct Rock-Eval pyrolysis of petroleum
Geochemical implications from direct Rock-Eval pyrolysis of petroleum Open
The maximum burial depth and thermal maturity of a hydrocarbon source rock controls the generation of petroleum, and data on rock maturity are necessary for an understanding of a petroleum system. Rock-Eval pyrolysis is an established meth…
View article: Hydrocarbons from near-surface sediments of the Barents Sea north of Svalbard – Indication of subsurface hydrocarbon generation?
Hydrocarbons from near-surface sediments of the Barents Sea north of Svalbard – Indication of subsurface hydrocarbon generation? Open
The Barents Sea is considered as an important target for oil and gas exploration, but the petroleum potential of its shelf and slope regions is unknown. Here we present results of a research cruise to the Northern Hinlopen Margin at the tr…