scholarly journals PEaCH4 v.2.0: A modelling platform to predict early diagenetic processes in marine sediments with a focus on biogenic methane – Case study: Offshore Namibia

2016 ◽  
Vol 92 ◽  
pp. 38-48 ◽  
Author(s):  
Esther T. Arning ◽  
Steffen Häußler ◽  
Wolfgang van Berk ◽  
Hans-Martin Schulz
Keyword(s):  
Marine Sediments ◽  
Biogenic Methane ◽  
Diagenetic Processes

scholarly journals Facies Heterogeneity and Lobe Facies Multiscale Analysis of Deep-Marine Sand-Shale Complexity in the West Crocker Formation of Sabah Basin, NW Borneo

2021 ◽  
Vol 11 (12) ◽  
pp. 5513
Author(s):  
Muhammad Jamil ◽  
Numair Ahmed Siddiqui ◽  
Abdul Hadi Bin Abd Rahman ◽  
Noor Azahar Ibrahim ◽  
Mohd Suhaili Bin Ismail ◽  
...  
Keyword(s):  
Conceptual Model ◽  
Marine Sediments ◽  
Multiscale Analysis ◽  
The West ◽  
Submarine Fans ◽  
Marine Sand ◽  
Facies Associations ◽  
Vertical Thickness ◽  
Mudstone Facies

Deepwater lobes constitute a significant volume of submarine fans and are primarily believed to exhibit a simple sheet geometry. However, recent studies interpret the geometries of these deep-marine lobes as distinct with respect to the complexity of the facies and their distribution. Hence, a conceptual model of deep-marine sediments is essential to discuss the deep-marine sediments associated with the fan and lobe architecture. The present study highlights the facies heterogeneity and distribution of various lobe elements at a multiscale level by considering a case study of the West Crocker Formation of Sabah in northwest Borneo. The formation was logged on a bed-to-bed scale from recently well-exposed sections, with a total vertical thickness of more than 300 m. The lithological characteristics, bed geometry, sedimentary textures and structures of individual beds were used to categorize the rock units into nine sedimentary lithofacies: five sandstone lithofacies (S1–S5), one hybrid bed facies (H), two siltstone facies (Si1 and Si2) and one shale or mudstone facies (M). These facies were grouped into four facies associations (FA1–FA4), which were interpreted as lobe axis (FA1), lobe off-axis (FA2), lobe fringe (FA3) and distal fringe to interlobe (FA4) facies associations. This study is applicable for the distribution of lobes and their subseismic, multiscale complexities to characterize the potential of hydrocarbon intervals in deep-marine sand-shale system around the globe.

Establishing the occurrence and profile of polycyclic aromatic hydrocarbons in marine sediments: The eastern Mediterranean coast of Spain as a case study

2019 ◽  
Vol 142 ◽  
pp. 206-215 ◽  
Author(s):  
R.A. González-Fuenzalida ◽  
R. Herráez-Hernández ◽  
J. Verdú-Andrés ◽  
A. Bouzas-Blanco ◽  
A. Seco-Torrecillas ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Marine Sediments ◽  
Aromatic Hydrocarbons ◽  
Eastern Mediterranean ◽  
Mediterranean Coast ◽  
Polycyclic Aromatic

Integrated characterization and risk management of marine sediments: The case study of the industrialized Bagnoli area (Naples, Italy)

2020 ◽  
Vol 160 ◽  
pp. 104984 ◽  
Author(s):  
Lorenzo Morroni ◽  
Giuseppe d’Errico ◽  
Marco Sacchi ◽  
Flavia Molisso ◽  
Giovanna Armiento ◽  
...  
Keyword(s):  
Risk Management ◽  
Marine Sediments

scholarly journals Sediment as a Potential Pool for Lipophilic Marine Phycotoxins with the Case Study of Daya Bay of China

Marine Drugs ◽  
2019 ◽  
Vol 17 (11) ◽  
pp. 623 ◽  
Author(s):  
Yang Liu ◽  
Peng Zhang ◽  
Sen Du ◽  
Zhuoru Lin ◽  
Yanyan Zhou ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Environmental Pollutants ◽  
Sediment Surface ◽  
Daya Bay ◽  
Toxic Substances ◽  
Sediment Samples ◽  
Tropical Area ◽  
Different Seasons ◽  
Sampling Times

Marine sediments can reserve many environmental pollutants. Lipophilic marine phycotoxins (LMPs) are natural toxic substances widespread in the marine environment; however, evidence of their existence in sediment is scarce. In the present study, in order to explore the occurrence and distribution characteristics of LMPs in sediment, surface sediment samples collected from a tropical area of Daya Bay (DYB) at different seasons, were analyzed using liquid chromatography with tandem mass spectrometry (LC-MS/MS). According to the results, up to six toxin compounds were detected in sediment samples from DYB, OA and DTX1 had the highest levels, followed by PTX2, homo-YTX, AZA2, and GYM. Although AZA2 and GYM were found in most of the sediment, OA, DTX1, homo-YTX, and PTX2 were the predominant toxin compounds, and PTX2 was the most ubiquitous toxin in sediment. The spatial distribution of LMP components in the sediment fluctuated with sampling times, partially according to the physical–chemical parameters of the sediment. There are likely several sources for LMPs existing in surface sediments, but it is difficult to determine contributions of a specific toxin-source in the sediment. Therefore, marine sediments may be a toxin reservoir for LMPs accumulation in benthic organisms via food chains.

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