Geochemical Alteration of Organic Matter in Eutrophic Lake GreifenImplications for the Determination of Organic Facies and the Origin of Lacustrine Source Rocks

1990 ◽  
Author(s):  
D. Hollander ◽  
F. Behar ◽  
M. Vandenbroucke ◽  
P. Bertrand ◽  
J. A. McKenzie
Keyword(s):  
Organic Matter ◽  
Eutrophic Lake ◽  
Source Rocks ◽  
Organic Facies

PETROLEUM POTENTIAL OF THE NEOPROTEROZOIC WESTERN OFFICER BASIN, WESTERN AUSTRALIA, BASED ON A SOURCE ROCK MODEL FROM EMPRESS-IA

1999 ◽  
Vol 39 (1) ◽  
pp. 322 ◽  
Author(s):  
G.M. Carlsen ◽  
S.N. Apak ◽  
K.A.R. Ghori K. Grey ◽  
M.K. Stevens
Keyword(s):  
Organic Matter ◽  
Western Australia ◽  
Depositional Environments ◽  
Source Rocks ◽  
Petroleum Potential ◽  
Organic Facies ◽  
Organic Growth ◽  
Rock Model ◽  
Depositional Controls ◽  
The Impact

The sedimentology, palaeontology and geochemistry of Neoproterozoic, organic-rich, clastic and related carbonate deposits in Western Australia provide new insights into the first-order depositional controls on hydrocarbon source rocks in the Neoproterozoic. Organic facies are correlated with depositional facies, revealing the impact of organic productivity and transport of organic rich sediments on the accumulation of organic matter in different depositional environments. Sedimentation is largely limited to ramp, platform, shoal, lagoon and sabkha environments.Growth of benthic organisms in the photic zone was the primary process controlling the production of organic matter in the ramp-shoreline system of the Kanpa Formation. Storms and floods were the primary mechanism for moving organic rich sediments into dysoxic and anoxic depositional environments. Variations in organic facies are indicated by: 1) changes in the palynomorph assemblages, particularly the increase in acritarchs within shallow-water ramp facies and cyanobacterial filaments in quiet-water sediments; 2) organic-rich laminae, containing abundant cyanobacterial filaments and mat material; and 3) the oxidation state of preserved organic remains.Periods of high organic growth rates or periods of mass mortality may have led to the development of an anoxic zone at the water-sediment interface. In the shoal and lagoonal settings, higher rates of clastic sediment dilution combined with oxygenated conditions resulted in lower TOC and hydrogen depleted organic facies.Condensed sections overlying stromatolitic dolomites represent the most effective organic facies of all of the potential source laminae sampled in Empress–IA. Most of the Officer Basin succession is currently within the oil-generating window and hydrocarbon shows encourage further exploration.

Use of infrared spectrophotoscope examination of bituminous components for determination of the oilgeneration zones in the mesozoic and Cenozoic deposits of the Azov-Kuban petroleum basin

2018 ◽  
pp. 92-99
Author(s):  
T. B. Mikerina ◽  
N. P. Fadeeva
Keyword(s):  
Organic Matter ◽  
Source Rocks ◽  
Infrared Spectrometry ◽  
Spectrometry Method ◽  
Genetic Types ◽  
Oil Generation ◽  
Petroleum Basin

Use of infrared spectrometry method for examination of bituminous components of dispersed organic matter in Mesozoic and Cenozoic deposits of the Azov-Kuban petroleum basin gave very important information about conditions of formation of source rocks containing organic matter and the degree of its diagenetic or catagenetic transformation level. Character of infrared spectrums represented by 15 genetic types of chloroform bitumen allows to subdivide the zones with the source beds absence, zones of oil generation and zones where this processes have come to the end.

scholarly journals OUTFLOW OF THE BIOGENIC SUBSTANCES IN THE DRAINAGE AREA OF SŁAWSKIE LAKE

2006 ◽  
Vol 1 ◽  
pp. 166
Author(s):  
A. Małecki
Keyword(s):  
Organic Matter ◽  
Eutrophic Lake ◽  
Drainage Area ◽  
Local Conditions ◽  
Biogenic Substances ◽  
Similar Character ◽  
Biogenic Compounds ◽  
The One ◽  
Technical Measures

The intent of the author is to familiarize the readers with the results of the research on the anthropogenic eutrophication of the Sławskie Lake where it is impossible or difficult to apply technical measures preventing the pollution. It is a shallow, eutrophic lake where, the structure and functioning – especially the accessibility of easily assimilated biogenic compounds, especially the phosphorus – depends significantly of the fate and speed of decay of the organic matter brought to that ecosystem from the drainage area. For the last several years observed was (in that researched lake) strong blossoming of algae and cyanosis constituting the proof of its periodically sudden eutrophication. A proper description of the volume of the area pollution and determination of the outflow indicators for the water transferring lakes is difficult because the volume of the outflow of the wastes is influenced not only by their diversified contents – being the result of the combination of individual components in varying proportions – but also their influence as a result of certain local conditions. Thus, the results obtained by different authors show big differences and even discrepancies. On the basis of the conducted research it was determined that the most adequate relation (with a similar character of the area) is for the researched drainage area the one between the load of the biogenes and the volume of the indicators of their unit outflow.

scholarly journals Effective source rock selection and oil–source correlation in the Western Slope of the northern Songliao Basin, China

2021 ◽  
Vol 18 (2) ◽  
pp. 398-415
Author(s):  
He Bi ◽  
Peng Li ◽  
Yun Jiang ◽  
Jing-Jing Fan ◽  
Xiao-Yue Chen
Keyword(s):  
Organic Matter ◽  
Source Rock ◽  
Thermal Evolution ◽  
Songliao Basin ◽  
Source Rocks ◽  
Crude Oils ◽  
Western Slope ◽  
Geochemical Parameters ◽  
Group I ◽  
Oil Source

AbstractThis study considers the Upper Cretaceous Qingshankou Formation, Yaojia Formation, and the first member of the Nenjiang Formation in the Western Slope of the northern Songliao Basin. Dark mudstone with high abundances of organic matter of Gulong and Qijia sags are considered to be significant source rocks in the study area. To evaluate their development characteristics, differences and effectiveness, geochemical parameters are analyzed. One-dimensional basin modeling and hydrocarbon evolution are also applied to discuss the effectiveness of source rocks. Through the biomarker characteristics, the source–source, oil–oil, and oil–source correlations are assessed and the sources of crude oils in different rock units are determined. Based on the results, Gulong and Qijia source rocks have different organic matter primarily detrived from mixed sources and plankton, respectively. Gulong source rock has higher thermal evolution degree than Qijia source rock. The biomarker parameters of the source rocks are compared with 31 crude oil samples. The studied crude oils can be divided into two groups. The oil–source correlations show that group I oils from Qing II–III, Yao I, and Yao II–III members were probably derived from Gulong source rock and that only group II oils from Nen I member were derived from Qijia source rock.

Sign in / Sign up

Export Citation Format

Share Document