OOIR: Observatory of International Research

Papers

(The TQCC of Organic Geochemistry is 5. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2020-11-01 to 2024-11-01.)

Article	Citations
Development of an in situ branched GDGT calibration in Lake 578, southern Greenland	28
Insights into catalytic effects of clay minerals on hydrocarbon composition of generated liquid products during oil cracking from laboratory pyrolysis experiments	23
Determination of in situ hydrocarbon contents in shale oil plays. Part 1: Is routine Rock–Eval analysis reliable for quantifying the hydrocarbon contents of preserved shale cores?	23
Practical considerations for amino acid isotope analysis	22
New approaches to distinguish shale-sourced and coal-sourced gases in petroleum systems	22
Stable isotopes of organic carbon, palynology, and petrography of a thick low-rank Miocene coal within the Mile Basin, Yunnan Province, China: implications for palaeoclimate and sedimentary conditions	21
Position-specific carbon isotopic composition of thermogenic propane: Insights from pyrolysis experiments	19
Molecular mechanisms of solid bitumen and vitrinite reflectance suppression explored using hydrous pyrolysis of artificial source rock	19
Kinetics of propane cracking and position-specific isotope fractionation: Insights into the origins of natural gases	18
Experimental and theoretical study on the formation of volatile sulfur compounds under gas reservoir conditions	18
Temperature and water depth effects on brGDGT distributions in sub-alpine lakes of mid-latitude North America	18
Composition and lability of photochemically released dissolved organic matter from resuspended estuarine sediments	18
Identifying plant wax inputs in lake sediments using machine learning	18
Possible explanations for the predominance of tricyclic terpanes over pentacyclic terpanes in oils and rock extracts	17
Cover loss in a seagrass Posidonia oceanica meadow accelerates soil organic matter turnover and alters soil prokaryotic communities	17
Carbon isotope systematics of leaf wax n-alkanes in a temperate lacustrine depositional environment	17
Influence of environmental parameters on the distribution of bacterial lipids in soils from the French Alps: Implications for paleo-reconstructions	17
Comparison of molecular distributions and carbon and hydrogen isotope compositions of n-alkanes from aquatic plants in shallow freshwater lakes along the middle and lower reaches of the Yangtze River,	17
Soil chemistry, temperature and bacterial community composition drive brGDGT distributions along a subarctic elevation gradient	16
Organic biogeochemistry in the oxygen-deficient ocean: A review	16
Sedimentary core brGDGTs in the East China Sea are mainly produced in situ as evidenced by their similar distributions with brGDGTs derived from intact polar lipids	16
Controls on the age of plant waxes in marine sediments – A global synthesis	15
Soil pH and aridity influence distributions of branched tetraether lipids in grassland soils along an aridity transect	15
Molecular and optical characterization reveals the preservation and sulfurization of chemically diverse porewater dissolved organic matter in oligohaline and brackish Chesapeake Bay sediments	15
In-situ provenance of brGDGTs in peat sediments: A case study from southern China and a comparison of global results	14

Plant wax evidence for precipitation and vegetation change from a coastal sinkhole lake in the Bahamas spanning the last 3000 years	14
Characterisation of heteroatomic compounds in free and bound bitumen from different source rocks by ESI FT-ICR MS	13
Targeted and untargeted lipidomic analysis of haptophyte cultures reveals novel and divergent nutrient-stress adaptations	13
Elucidating the formation pathway of photo-generated asphaltenes from light Louisiana sweet crude oil after exposure to natural sunlight in the Gulf of Mexico	13
The molecular and sulfur isotope distribution of volatile compounds in natural gases and condensates from Alberta, Canada	12
Efficiency of sympagic-benthic coupling revealed by analyses of n-3 fatty acids, IP25 and other highly branched isoprenoids in two filter-feeding Arctic benthic molluscs: Mya truncata and Serripes gro	12
Molecular composition of dissolved organic matter in saline lakes of the Qing-Tibetan Plateau	12
An application of exploratory factor analysis in the deconvolution of heavy oil biodegradation, charging and mixing history in southeastern Mexico	12
Reappraisal of archaeal C20-C25 diether lipid (extended archaeol) origin and use as a biomarker of hypersalinity	11
Substantial maturity influence on carbon and hydrogen isotopic composition of n-alkanes in sedimentary rocks	11
Plant wax and carbon isotope response to heat and drought in the conifer Juniperus monosperma	11
Molecular and stable isotope analysis (δ13C, δ2H) of sedimentary n-alkanes in the St. Lawrence Estuary and Gulf, Quebec, Canada: Importance of even numbered n-alkanes in coastal systems	11
Evaluation of the tight oil “sweet spot” in the Middle Permian Lucaogou Formation (Jimusaer Sag, Junggar Basin, NW China): Insights from organic petrology and geochemistry	10
Genetic and source differences of gases in the Middle Permian Qixia and Maokou formations in the Sichuan Basin, SW China	10
Composition of resinites from the Eocene Geiseltal brown coal basin, Saxony-Anhalt, Germany and comparison to their possible botanical analogues	10
Microbial lipid signatures in Arctic deltaic sediments – Insights into methane cycling and climate variability	10
Fingerprint of plant life in the Atacama Desert – Insights from n-alkane analyses	10
Diverse origins of “soil marker” bacteriohopanepolyols in marine oxygen deficient zones	10
The impact of precipitation on the distributions of branched tetraethers in alkaline soils	10
Revisiting the precursors of the most abundant natural products on Earth: A look back at 30+ years of bacteriohopanepolyol (BHP) research and ahead to new frontiers	9
Elucidation of the macromolecular composition of fossil biopolymers using Py-GC×GC-TOFMS	9
Diamondoids in petroleum: Their potential as source and maturity indicators	9
Identifying marine and freshwater overprints on soil-derived branched GDGT temperature signals in Pliocene Mississippi and Amazon River fan sediments	9
Multi-proxy approach involving ultrahigh resolution mass spectrometry and self-organising maps to investigate the origin and quality of sedimentary organic matter across a subtropical reservoir	9
Distinct sources of bacterial branched GMGTs in the Godavari River basin (India) and Bay of Bengal sediments	9
Oil-source and oil-oil correlations and the origin of the heavy oil and bitumen accumulations in Northern Alberta, Canada	9
Molecular and carbon isotope composition of hydrocarbons from ambers of the Eocene Shenbei coalfield (Liaoning Province, NE China)	9
Unravelling the impact of lithofacies on the composition of NSO compounds in residual and expelled fluids of the Barnett, Niobrara and Posidonia formations	9
Extended series of tricyclic terpanes in the Mesoproterozoic sediments	9
Assessment of the molecular-level compositional heterogeneity of natural organic matter in bentonites intended for long-term used nuclear fuel storage	9
Hydrocarbon transformations in sediments from the Cathedral Hill hydrothermal vent complex at Guaymas Basin, Gulf of California – A chemometric study of shallow seep architecture	9
Effects of Mississippi valley-type minerogenetic metal sulfates on thermochemical sulfate reduction, studied by hydrous pyrolysis	9
Composition and lability of riverine dissolved organic matter: Insights from thermal slicing ramped pyrolysis GC–MS, amino acid, and stable isotope analyses	9
Integration of methyldibenzothiophene and pyrolysis techniques to determine thermal maturity in sulfur-rich Type II-S source rocks and oils	9
Petroleum generation and migration in the southern Tyumen region, Western Siberia Basin, Russia	9
Hydrothermal experiments involving methane and sulfate: Insights into carbon isotope fractionation of methane during thermochemical sulfate reduction	9
Carbon isotopic composition of leaf wax n-alkanes in mangrove plants along a latitudinal gradient in Brazil	9
Biomarkers reveal Eocene marine incursions into the Qaidam Basin, north Tibetan Plateau	9
Source, composition, and distributional pattern of branched tetraethers in sediments of northern Chinese marginal seas	9
Influence of hydrothermal vent activity on GDGT pool in marine sediments might be less than previously thought	8
GDGTs as indicators for organic-matter sources in a small subtropical river-estuary system	8
New paleoenvironmental proxies for the Irati black shales (Paraná Basin, Brazil) based on acidic NSO compounds revealed by ultra-high resolution mass spectrometry	8
Fourier transform ion cyclotron resonance mass spectrometric analysis of NSO-compounds generated in hydrothermally altered sediments from the Escanaba Trough, northeastern Pacific Ocean	8
Understanding the disparity in n-alkane production among angiosperms and gymnosperms from the higher Himalayas: Inferences drawn from a Machine Learning approach	8
Methylation and demethylation of naphthalene homologs in highly thermal mature sediments	8
Molecular n-alkyl leaf waxes of three dominant plants from the temperate forest in South America	8
Organic geochemical heterogeneity of the Cretaceous Abu Gabra Formation and reassessment of oil sources in the Sufyan sub-basin, Sudan	8
Pyrolysis of 1-methylnaphthalene involving water: Effects of Fe-bearing minerals on the generation, C and H isotope fractionation of methane from H2O-hydrocarbon reaction	7
Investigation of the maturation effects on biomarker distributions in bituminous coals	7
Characterisation by ESI FT-ICR MS of heteroatomic compounds in catalytic hydropyrolysates released from marine crude oil asphaltenes	7

Evaluation of anhydrosugars as a molecular proxy for paleofire activity: A case study on a Holocene sediment core from Agios Floros, Peloponnese, Greece	7
Triaromatic dinosteroids – Isomeric distributions and their geochemical significance	7
Gas generation and intramolecular isotope study in laboratory pyrolysis of the Springfield coal from the Illinois Basin	7
Impact of selective degradation on molecular isotope compositions in oxic and anoxic marine sediments	7
Polycyclic aromatic sulfur heterocycles used as molecular markers in crude oils and source rocks	7
Effects of environmental history and post-depositional processes on the organic matter record of Lake Łebsko, Poland	7
Lipid biomarker estimates of seasonal variations of aerosol organic carbon sources in coastal Qingdao, China	7
Characterizing ecosystem-driven chemical composition differences in natural and drained Finnish bogs using pyrolysis-GC/MS	7
Analysis of non-derivatized bacteriohopanepolyols using UHPLC-HRMS reveals great structural diversity in environmental lipid assemblages	7
Robust determination of kerogen properties in organic-rich mudrocks via Raman Spectroscopy	7
Monoterpenylabietenoids, novel biomarkers from extant and fossil Taxodioideae and sedimentary rocks	7
Imprint of Kairei and Pelagia deep-sea hydrothermal systems (Indian Ocean) on marine dissolved organic matter	7
Revisiting paleoenvironmental analyses and interpretations of organic-rich deposits: The importance of TOC corrections	7
NSO-compounds in oil-bearing fluid inclusions revealed by FT-ICR-MS in APPI (+) and ESI (−) modes: A new method development	7
Fluorescence lifetime evolution of crude oils during thermal cracking: Implications from pyrolysis experiments in a closed system	6
A new and improved protocol for extraction of intact polar membrane lipids from archaea	6
Characteristics of light hydrocarbons under the superimposed influence of biodegradation and subsequent thermal maturation	6
Extended chain length alkenoates differentiate three Isochrysidales groups	6
Thermal evolution of steroids during anhydrous pyrolysis of cholesterol with and without elemental sulfur	6
Isotopic evidence for the formation of 25-norhopanes via in situ biodegradation in the Permian Lucaogou shales, southern Junggar Basin	6
Unusual 13C depletion in the central carbon of propane in the gases of Longmaxi shale in the Sichuan Basin	6
Identifying the drivers of GDGT distributions in alkaline soil profiles within the Serengeti ecosystem	6
Occurrence and origin of perylene in Paleogene sediments from the Tasmanian Gateway, Australia	6
Deconvolution of post- and pre-salt petroleum sources in southeastern offshore Brazilian basins	6
Group 2i Isochrysidales flourishes at exceedingly low growth temperatures (0 to 6 °C)	6
The presence of 18α(H)-oleanane in Pennsylvanian and Mississippian rocks in the Anadarko Basin, Oklahoma	5
Re-evaluation of the 13C isotope fractionation associated with lipids biosynthesis by position-specific isotope analysis of plant fatty acids	5
Exceptional molecular preservation in the Late Jurassic Claudia palaeo-geothermal field (Deseado Massif, Patagonia, Argentina)	5
A maturation scale for molecular simulation of kerogen thermal degradation	5
Appraisal of paleoclimate indices based on bacterial 3-hydroxy fatty acids in 20 Chinese alkaline lakes	5
Phase behavior and GOR evolution using a natural maturity series of lacustrine oil-prone shale: Implications from compositional modelling	5
Hydrogen isotopic composition (δ2H) of diatom-derived C20 highly branched isoprenoids from lake sediments tracks lake water δ2H	5
Diagenetic fate of glycerol ethers revealed by two novel isoprenoid hydroxyphytanyl glycerol monoethers and non-isoprenoid alkyl glycerol ethers	5
Characterization of crude oils derived from carbonate and siliciclastic source rocks using FTICR-MS	5
Predicting Rock-Eval® thermal analysis parameters of a soil layer based on samples from its sublayers; an experimental study on forest soils	5
Terpenoids in surface soils from different ecosystems on the Tibetan Plateau	5
A distinct oil group in the Dongying Depression, Bohai Bay Basin, China: New insights from norcholestane and triaromatic steroid analyses	5
Unraveling gas charging and leakage for oil reservoirs in the Mahu sag of the Junggar Basin, NW China using concentrations and ratios of biomarkers, light hydrocarbons and diamondoids	5
Molecular and carbon isotopic evidence of pigments indicating a dynamic oceanic chemocline 1.4 billion years ago in northern China	5
Organic matter composition and thermal maturity evaluation of Mesoproterozoic source rocks in the Beetaloo Sub-Basin, Australia	5
A new empirical approach for rapid quantification of organic and pyritic sulfur in sedimentary rocks using the Rock-Eval 7S	5
Identification, distribution and geochemical significance of dinaphthofurans in coals	5
Novel methyl-branched alkenones with up to five double bonds in saline lakes	5
Characterization of free and bound bitumen fractions in a thermal maturation shale sequence. Part 2: Structural evolution of kerogen and bitumen during shale oil generation, expulsion and retention	5
Group 1 phylogeny and alkenone distributions in a freshwater volcanic lake of northeastern China: Implications for paleotemperature reconstructions	5
Residual carboxylic acids (nonpyrolytic) in mudstones and their implications and constraints on sandstone diagenesis, Bozhong Depression, offshore Bohai Bay Basin, East China	5
Generation and decomposition of low-molecular-weight organic acids in hydrous pyrolysis experiments with Opalinus Clay rock	5