Results 31 to 40 of about 18,595 (261)

Assessment of the hydrocarbon potential of the Bering Sea

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2021
Background. The issues of hydrocarbon (HC) forecasting and prospecting on sea shelves remain relevant. In this paper, an experience of assessing the hydrocarbon potential of the Bering Sea using the method of basin modelling is demonstrated.Aim.
E. A. Lavrenova   +2 more
doaj   +1 more source

Genome-inspired molecular identification in organic matter via Raman spectroscopy

open access: yes, 2016
Rapid, non-destructive characterization of molecular level chemistry for organic matter (OM) is experimentally challenging. Raman spectroscopy is one of the most widely used techniques for non-destructive chemical characterization, although it currently ...
Bryndzia, L. Taras   +3 more
core   +1 more source

Cretaceous-Tertiary boundary deposits in Denmark: A diachroneity [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
The lateral distribution of predominantly terrestrial kerogen or humics enriched with copper(II) porphyrins (Cu-P) across the Danish marine basin implies that the alleged Cretaceous-Tertiary (KT) boundary deposits in western Denmark (at the Nye Kløv ...
Premović Pavle I.
doaj   +1 more source

Model representations of kerogen structures: An insight from density functional theory calculations and spectroscopic measurements

open access: yesScientific Reports, 2017
Molecular structures of kerogen control hydrocarbon production in unconventional reservoirs. Significant progress has been made in developing model representations of various kerogen structures.
Philippe F. Weck   +6 more
doaj   +1 more source

Air oxidation of the kerogen/asphaltene vanadyl porphyrins: An electron spin resonance study [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The thermal behavior of vanadyl porphyrins was studied by electron spin resonance during heating of kerogens, isolated from the La Luna (Venezuela) and Serpiano (Switzerland) bituminous rocks, at 250ºC for 1 to 20 days in the presence of air ...
Premović Pavle I.   +3 more
doaj   +1 more source

Cretaceous-tertiary boundary layer at Stevns Klint (Denmark): Copper and copper(II) porphyrins [PDF]

open access: yesJournal of the Serbian Chemical Society, 1999
High concentrations (up to 4000 ppm) of copper(II) porphyrins have been detected in the kerogen of the Cretaceous/Tertiary (KT) boundary informal type sediment, the Fish Clay, at Stevns Klint, Denmark.
Premović Pavle I.   +4 more
doaj   +1 more source

Postdiagenetic Changes in Kerogen Properties and Type by Bacterial Oxidation and Dehydrogenation

open access: yesMolecules, 2022
A significant part of organic carbon found on the earth is deposited as fossil organic matter in the lithosphere. The most important reservoir of carbon is shale rocks enriched with organic matter in the form of kerogen created during diagenesis.
Agnieszka Wilamowska   +2 more
doaj   +1 more source

Fossil biomass preserved as graphitic carbon in a late paleoproterozoic banded iron formation metamorphosed at more than 550°C [PDF]

open access: yes, 2019
Metamorphism is thought to destroy microfossils, partly through devolatilization and graphitization of biogenic organic matter. However, the extent to which there is a loss of molecular, elemental and isotope signatures from biomass during high ...
De Gregorio, BT   +9 more
core   +2 more sources

Geochemistry of the cretaceous-tertiary boundary (Fish Clay) at Stevns Klint (Denmark): Ir, Ni and Zn in kerogen [PDF]

open access: yesJournal of the Serbian Chemical Society, 2006
Geochemical analyses of trace metals (Ir, Ni and Zn) in the kerogen of the black marl of the Cretaceous-Tertiary boundary succession (Fish Clay) at Stevns Klint (Højerup Church) were undertaken.
Premović Pavle I.   +5 more
doaj   +1 more source

The Carriers of the Interstellar Unidentified Infrared Emission Features: Aromatic or Aliphatic?

open access: yes, 2012
The unidentified infrared emission (UIE) features at 3.3, 6.2, 7.7, 8.6, and 11.3 micrometer, commonly attributed to polycyclic aromatic hydrocarbon (PAH) molecules, have been recently ascribed to coal- or kerogen-like organic nanoparticles with a mixed ...
Draine, B. T., Li, Aigen
core   +1 more source

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