Zobrazeno 1 - 10
of 55
pro vyhledávání: '"A.G. Requejo"'
Publikováno v:
Geochimica et Cosmochimica Acta. 61:2653-2667
Geochemical analysis of steranes in source rocks from the Western Canada Basin has allowed the identification of several C2, and C2* short-chain sterane isomers. The principal compounds in carbonates from the U. Jurassic Nordegg Formation have been i
Autor:
A.G. Requejo, Roger Sassen, James M. Brooks, Thomas J. McDonald, Mahlon C. Kennicutt, G.J. Denoux
Publikováno v:
Organic Geochemistry. 24:1017-1033
Whole oil GC-MS was used to characterize selected polynuclear aromatic hydrocarbons (PAH) in a suite of marine crude oils derived from source rocks deposited under different conditions. The selected PAH consist primarily of 2- and 3-ring aromatic hyd
Autor:
G.J. Denoux, Paul A. Comet, A.G. Requejo, Roger Sassen, Thomas J. McDonald, James M. Brooks, I. Kvedchuk, Mahlon C. Kennicutt
Publikováno v:
Organic Geochemistry. 23:205-222
A geochemical study of 36 oils from the northern Timan-Pechora Basin indicates four oil types. Two types of sulfur-rich oils (range 1.4–2.5% sulfur) can be identified on the basis of both gross and molecular properties. These oils are found primari
Autor:
Mahlon C. Kennicutt, Stephen T. Sweet, A.G. Requejo, Roger Sassen, Norman L. Guinasso, Ian R. MacDonald, James M. Brooks
Publikováno v:
Geo-Marine Letters. 14:110-119
We used a research submersible to obtain 33 sediment samples from chemosynthetic communities at 541–650 m water depths in the Green Canyon (GC) area of the Gulf of Mexico slope. Sediment samples from beneath an isolated mat of H2S-oxidizing bacteri
Autor:
A.G. Requejo
Publikováno v:
Organic Geochemistry. 21:91-105
Quantitative changes in extractable saturated and aromatic hydrocarbon compositions with increasing maturation have been examined in a natural source rock sample suite of uniform lithology and organic facies. The samples are from the Upper Devonian D
Sediment contaminants in Casco Bay, Maine: inventories, sources, and potential for biological impact
Autor:
Terry L. Wade, Mahlon C. Kennicutt, James M. Brooks, Bob J. Presley, G.J. Denoux, A.G. Requejo
Publikováno v:
Environmental sciencetechnology. 28(1)
An inventory-based approach to environmental assessment that determines concentrations of sedimentary contaminants, defines their origins, and assesses the potential for biological impact is illustrated in Casco Bay, ME. The most widespread contamina
Publikováno v:
Organic Geochemistry. 19:245-264
Aryl isoprenoids in the range C13–C31 have been identified in source rock bitumens and oils from several Paleozoic-age petroleum systems in the Western Canada and Williston Basins. The principal compounds possess the 2-alkyl-1,3,4-trimethyl substit
Publikováno v:
SPE/EPA Exploration and Production Environmental Conference.
Autor:
Stephen T. Sweet, Norman L. Guinasso, Ian R. MacDonald, David R. Schink, Samantha B. Joye, Javier Alcalá-Herrera, Roger Sassen, A.G. Requejo, Debra A. DeFreitas
Publikováno v:
Geology. 26:851
Samples of thermogenic hydrocarbon gases, from vents and gas hydrate mounds within a sea-floor chemosynthetic community on the Gulf of Mexico continental slope at about 540 m depth, were collected by research submersible. The study area is characteri