Microbial activities in the development of reducing conditions in marine sediments (Preliminary report)

1964 ◽  
Vol 11 (5) ◽  
pp. 864-865
Keyword(s):  
Marine Sediments ◽  
Preliminary Report ◽  
Microbial Activities ◽  
Reducing Conditions

scholarly journals Transfer of germanium to marine sediments: Insights from its accumulation in radiolarites and authigenic capture under reducing conditions. Some examples through geological ages

2011 ◽  
Vol 282 (3-4) ◽  
pp. 120-130 ◽  
Author(s):  
N. Tribovillard ◽  
V. Bout-Roumazeilles ◽  
A. Riboulleau ◽  
F. Baudin ◽  
T. Danelian ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Reducing Conditions

scholarly journals Novel Application of Laboratory Instrumentation Characterizes Mass Settling Dynamics of Oil-Mineral Aggregates (OMAs) and Oil-Mineral-Microbial Interactions

2018 ◽  
Vol 52 (6) ◽  
pp. 87-90
Author(s):  
Leiping Ye ◽  
Andrew J. Manning ◽  
Tian-Jian Hsu ◽  
Steve Morey ◽  
Eric P. Chassignet ◽  
...  
Keyword(s):  
Water Column ◽  
Marine Sediments ◽  
Oil Spills ◽  
Numerical Models ◽  
Deep Ocean ◽  
Deepwater Horizon ◽  
Microbial Interactions ◽  
Microbial Activities ◽  
Microbial Biodegradation ◽  
Mineral Aggregates

AbstractIt is reasonable to assume that microbes played an important role in determining the eventual fate of oil spilled during the 2010 Deepwater Horizon disaster, given that microbial activities in the Gulf of Mexico are significant and diverse. However, critical gaps exist in our knowledge of how microbes influence the biodegradation and accumulation of petroleum in the water column and in marine sediments of the deep ocean and the shelf. Ultimately, this limited understanding impedes the ability to forecast the fate of future oil spills, specifically the capacity of numerical models to simulate the transport and fate of petroleum under a variety of conditions and regimes.By synthesizing recent model developments and results from field- and laboratory-based microbial studies, the Consortium for Simulation of Oil-Microbial Interactions in the Ocean (CSOMIO) investigates (a) how microbial biodegradation influences accumulation of petroleum in the water column and in marine sediments and (b) how biodegradation can be influenced by environmental conditions and impact forecasts of potential future oil spills.

Arsenic Speciation in Marine Sediments: Effects of Redox Potential and Reducing conditions

1997 ◽  
Vol 68 (3) ◽  
pp. 377-389 ◽  
Author(s):  
M. C. Villa-lojo ◽  
E. Beceiro-GonzÁlez ◽  
E. Alonso-Rodríguez ◽  
D. Prada-Rodríguez
Keyword(s):  
Redox Potential ◽  
Marine Sediments ◽  
Arsenic Speciation ◽  
Reducing Conditions

scholarly journals Foraminifera from the Upper Cretaceous of northern James Ross Island (Antarctica): a preliminary report

2011 ◽  
Vol 1 (2) ◽  
pp. 88-95 ◽  
Author(s):  
Lenka Hradecká ◽  
Radek Vodrážka ◽  
Daniel Nývlt
Keyword(s):  
Marine Sediments ◽  
Preliminary Report ◽  
Upper Cretaceous ◽  
Relevant Information ◽  
Geological Mapping ◽  
Island Region ◽  
James Ross Island

The Cretaceous biostratigraphy of the James Ross Island region is generally based on palynomorphs and macrofossils (bivalves, ammonites). During geological mapping of the northern James Ross Island a number of samples from Upper Cretaceous lithologies were gathered to test the presence of foraminifers as a possible tool for stratigraphic evaluation of Upper Cretaceous strata. Limited number of samples did not provide foraminiferal content large enough to give relevant information for biostratigraphic conclusions. Samples from older sediments of Whisky Bay and Kotick Point formations (Albian – Turonian) were either not fossiliferous or contained scarce specimens of agglutinated foraminifers. Foraminiferal assemblages from younger sediments of Hidden Lake and Santa Marta formations (Coniacian – Campanian) contained species with both agglutinated and calcareous types of tests. Many of studied marine sediments were barren of foraminifers, probably due to late diagenetic secondary decalcification. Taxonomy of low-diversified assemblages was carried out and a biostratigraphical and palaeobiogeographical significance discussed.

Pliocene and Pleistocene Magnetic Stratigraphy in Le Castella Area, Southern Italy—A Preliminary Report

1971 ◽  
Vol 1 (3) ◽  
pp. 360-368 ◽  
Author(s):  
Hisao Nakagawa ◽  
Nobuaki Niitsuma ◽  
Carlo Elmi
Keyword(s):  
Lower Limit ◽  
Marine Sediments ◽  
Preliminary Report ◽  
Southern Italy ◽  
Magnetic Stratigraphy ◽  
Lower Pleistocene ◽  
Preliminary Study ◽  
Reversed Polarity ◽  
Tentative Correlation

A preliminary study was made of the magnetic stratigraphy of the Pliocene and Lower Pleistocene marine sediments in Le Castella area, Calabria, Southern Italy. Microbiostratigraphic evidence of the measured sediments provides a basis for tentative correlation with the standard magnetic chronology. The Gilsa Event in the Matuyama Reversed Polarity Epoch is estimated to be a little older than the lower limit of the Calabrian in Le Castella area.

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