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  • 2-methyl hop-17(21)-ene/hop-17(21)-ene ratio; Biomarkers; Carbon, organic, total; Carbon Preference Index, n-Alkanes; CASE19; Diterpenoids, total, per unit mass total organic carbon; Element analyser CS, LECO; Ellesmere Island; Epoch; Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS); Gas chromatography triple quadrupole mass spectrometry (GC-QQQ-MS); Hop-17(21)-ene, per unit mass total organic carbon; Hop-17(21)-ene, δ13C; Hopanoids; Hopene, total, per unit mass total organic carbon; Hydrogen index, mass HC, per unit mass total organic carbon; Isopimarane, per unit mass total organic carbon; Location; LR17_Stenkul_Fiord_EAST; n-Alkane, average chain length; n-Alkane, sum, per unit mass total organic carbon; OUTCROP; Outcrop sample; Oxygen index, mass CO2, per unit mass total organic carbon; PETM; Pyrolysis temperature maximum; Rock-Eval analysis; Sample ID; SECTION, height; Site; Stable carbon and hydrogen isotopes of plant-waxes; Stable carbon isotope (δ13C); Sulfur, total  (1)
  • 560  (1)
  • Aluminium; Aluminium, chi-square; Calcium; Calcium, chi-square; Calcium carbonate; Calculated; Chloride, chi-square; Chlorine; Chromium; Chromium, chi-square; Core; CORE; Depth, composite; DEPTH, sediment/rock; Intercore correlation; Iron; Iron, chi-square; log-Calcium/Titanium ratio; log-Potassium/Titanium ratio; log-Silicon/Aluminium ratio; Lower Saxony, Northern Germany; Manganese; Manganese, chi-square; Potassium; Potassium, chi-square; Rhodium; Rhodium, chi-square; Scharrel-10; Silicon; Silicon, chi-square; Sulfur; Sulfur, chi-square; Titanium, chi-square; X-ray fluorescence core scanner (XRF), BGR, Berlin-Spandau  (1)
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  • 1
    Publication Date: 2023-07-10
    Keywords: Aluminium; Aluminium, chi-square; Calcium; Calcium, chi-square; Calcium carbonate; Calculated; Chloride, chi-square; Chlorine; Chromium; Chromium, chi-square; Core; CORE; Depth, composite; DEPTH, sediment/rock; Intercore correlation; Iron; Iron, chi-square; log-Calcium/Titanium ratio; log-Potassium/Titanium ratio; log-Silicon/Aluminium ratio; Lower Saxony, Northern Germany; Manganese; Manganese, chi-square; Potassium; Potassium, chi-square; Rhodium; Rhodium, chi-square; Scharrel-10; Silicon; Silicon, chi-square; Sulfur; Sulfur, chi-square; Titanium, chi-square; X-ray fluorescence core scanner (XRF), BGR, Berlin-Spandau
    Type: Dataset
    Format: text/tab-separated-values, 392148 data points
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  • 2
    Publication Date: 2024-06-12
    Description: This dataset contains bulk geochemical information (TOC, S, Tmax, Hydrogen and Oxygen Indices), relative and absolute abundances of selected plant wax and bacterial hopanoid biomarkers as well as stable carbon and hydrogen isotope signatures of selected compounds. Samples were analysed with a Leco C/S analyser, a Rock-Eval 6 pyrolysis unit, a gas chromatograph-triple quad mass spectrometer and gas chromatograph isotope ratio mass spectrometer (for d13C and d2H). The samples originate from two onshore outcrops at the Stenkul Fiord (Ellesmere Island) and are mostly coal samples of the lignite thermal maturity stage. The age of the samples are Paleogene and cover the Paleocene Eocene Thermal Maximum (PETM; Margaret Formation), and they were taken in 2017 (BGR CASE 19 expedition). The data were generated to reconstruct the terrestrial paleovenvironment in this high-latitude setting. More information on the studied sections can be found elswhere (Reinhardt et al., 2022).
    Keywords: 2-methyl hop-17(21)-ene/hop-17(21)-ene ratio; Biomarkers; Carbon, organic, total; Carbon Preference Index, n-Alkanes; CASE19; Diterpenoids, total, per unit mass total organic carbon; Element analyser CS, LECO; Ellesmere Island; Epoch; Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS); Gas chromatography triple quadrupole mass spectrometry (GC-QQQ-MS); Hop-17(21)-ene, per unit mass total organic carbon; Hop-17(21)-ene, δ13C; Hopanoids; Hopene, total, per unit mass total organic carbon; Hydrogen index, mass HC, per unit mass total organic carbon; Isopimarane, per unit mass total organic carbon; Location; LR17_Stenkul_Fiord_EAST; n-Alkane, average chain length; n-Alkane, sum, per unit mass total organic carbon; OUTCROP; Outcrop sample; Oxygen index, mass CO2, per unit mass total organic carbon; PETM; Pyrolysis temperature maximum; Rock-Eval analysis; Sample ID; SECTION, height; Site; Stable carbon and hydrogen isotopes of plant-waxes; Stable carbon isotope (δ13C); Sulfur, total
    Type: Dataset
    Format: text/tab-separated-values, 141 data points
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  • 3
    Publication Date: 2021-07-26
    Description: The Khatyspyt Lagerstätte (~544 Ma, Russia) provides a valuable window into late Ediacaran Avalon-type ecosystems with rangeomorphs, arboreomorphs, and mega-algae. Here, we tackle the geobiology of this Lagerstätte by the combined analysis of paleontological features, sedimentary facies, and lipid biomarkers. The Khatyspyt Formation was deposited in carbonate ramp environments. Organic matter (0.12–2.22 wt.% TOC) displays characteristic Ediacaran biomarker features (e.g., eukaryotic steranes dominated by the C29 stigmastane). Some samples contain a putative 2-methylgammacerane that was likely sourced by ciliates and/or bacteria. 24-isopropylcholestane and 26-methylstigmastane are consistently scarce (≤0.4% and ≤0.2% of ∑C27-30 regular steranes, respectively). Thus, Avalon-type organisms occupied different niches than organisms capable of directly synthesizing C30 sterane precursors among their major lipids. Relative abundances of eukaryotic steranes and bacterial hopanes (sterane/hopane ratios = 0.07–0.30) demonstrate oligotrophic and bacterially dominated marine environments, similar to findings from other successions with Ediacara-type fossils. Ediacara-type fossils occur in facies characterized by microbial mats and biomarkers indicative for a stratified marine environment with normal–moderate salinities (moderate–high gammacerane index of 2.3–5.7; low C35 homohopane index of 0.1–0.2). Mega-algae, in contrast, are abundant in facies that almost entirely consist of allochthonous event layers. Biomarkers in these samples indicate a non-stratified marine environment and normal salinities (low gammacerane index of 0.6–0.8; low C35 homohopane index of 0.1). Vertical burrowers occur in similar facies but with biomarker evidence for stratification in the water column or around the seafloor (high gammacerane index of 5.6). Thus, the distribution of macro-organisms and burrowers was controlled by various, dynamically changing environmental factors. It appears likely that dynamic settings like the Khatyspyt Lagerstätte provided metabolic challenges for sustenance and growth which primed eukaryotic organisms to cope with changing environmental habitats, allowing for a later diversification and expansion of complex macroscopic life in the marine realm.
    Keywords: 560 ; ichnofabrics ; lipid biomarkers ; methylgammacerane ; methylgammacerane index (MGI) ; sedimentary facies ; trace fossils ; vertical bioturbation
    Language: English
    Type: article
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