Zobrazeno 1 - 10
of 96
pro vyhledávání: '"Roger Sassen"'
Autor:
Xiao-Lei Liu, Harry H. Roberts, Jörn Peckmann, Duofu Chen, Dong Feng, Roger Sassen, Kai-Uwe Hinrichs, Samantha B. Joye, Daniel Birgel
Publikováno v:
Chemical Geology. 385:129-139
article i nfo Authigenic carbonate rocks recovered from the Gulf of Mexico Gas Hydrate Seafloor Observatory in Mississippi Canyon block 118 (MC118) at approximately 900 m water depth were studied using mineralogical, bulk geochemical, and lipid bioma
Publikováno v:
Carbonates and Evaporites. 26:155-165
The present study examined crude oils and condensates from 12 productive oil field zones present in the Upper Indus Basin, Pakistan, located at 33°11′00″N to 33°56′00″N and 73°10′00″ to 73°56′00″E. These crude oils and condensates
Autor:
Ahmed S. Mansour, Roger Sassen
Publikováno v:
Marine Geology. 281:59-69
One of the characteristic features on the cold deep seafloor on Atwater Valley (AT) Block 425 (1930 m water depth) in the Gulf of Mexico is the occurrence of seepage of crude oil and hydrocarbon gases associated with thermogenic gas hydrate and authi
Publikováno v:
Organic Geochemistry. 40:1143-1150
In the present study, the quantitative determination of the diamondoid compound adamantane in organic solvents via infrared attenuated total reflection (IR-ATR) spectroscopy at unmodified waveguide surfaces was established. Limits of detection (LOD)
Autor:
Paul J. Post, Roger Sassen
Publikováno v:
Organic Geochemistry. 39:147-151
Gas condensate migrated vertically to Upper Jurassic and Lower Cretaceous reservoir rocks in the Hudson Canyon (HC) area of the Baltimore Canyon Trough, US Atlantic. Condensate samples are enriched in diamondoids (4742–4774 ppm) and 13C (δ13C =
Autor:
Joseph A. Curiale, Roger Sassen
Publikováno v:
Organic Geochemistry. 37:977-980
Intact, white nodules of gas hydrate were recovered in piston cores (∼0–6.4 m sediment depth) from the deep water region of the Makassar Strait, between the islands of Borneo and Sulawesi, offshore Indonesia. Consistent with structure I gas hydra
Autor:
Helen M. Talbot, Joe W. Tavacoli, Roger Sassen, Chuanlun Zhang, Jaap S. Sinninghe Damsté, Richard D. Pancost, Stefan Schouten, Paul Farrimond
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 227:48-66
Anaerobic oxidation of methane (AOM) is common in ocean-margin sediments, where it is mediated by consortia of Archaea and Bacteria and can result in the formation of authigenic carbonate, including extensive carbonate crusts. Previous work indicates
Autor:
Richard D. Pancost, Robin L. Brigmon, James Cantu, Zhiyong Huang, Timothy W. Lyons, Chuanlun Zhang, Roger Sassen
Publikováno v:
Applied and Environmental Microbiology. 71:2106-2112
White and orange mats are ubiquitous on surface sediments associated with gas hydrates and cold seeps in the Gulf of Mexico. The goal of this study was to determine the predominant pathways for carbon cycling within an orange mat in Green Canyon (GC)
Publikováno v:
Geochimica et Cosmochimica Acta. 69:1007-1026
We report and discuss molecular and isotopic properties of hydrate-bound gases from 55 samples and void gases from 494 samples collected during Ocean Drilling Program (ODP) Leg 204 at Hydrate Ridge offshore Oregon. Gas hydrates appear to crystallize
Autor:
Philip E. Long, Hitoshi Tomaru, George E. Claypool, Roger Sassen, Marta E Torres, Walter S Borowski, Young-Joo Lee, Alexei V. Milkov
Publikováno v:
Organic Geochemistry. 35:1067-1080
The recognition of finely disseminated gas hydrate in deep marine sediments heavily depends on various indirect techniques because this mineral quickly decomposes upon recovery from in situ pressure and temperature conditions. Here, we discuss molecu