L R Snowdon

ORCID: 0000-0003-3430-5243
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About
Contact & Profiles
Research Areas
  • Hydrocarbon exploration and reservoir analysis
  • Geological Studies and Exploration
  • Geochemistry and Geologic Mapping
  • Atmospheric and Environmental Gas Dynamics
  • Petroleum Processing and Analysis
  • Hydraulic Fracturing and Reservoir Analysis
  • Methane Hydrates and Related Phenomena
  • Drilling and Well Engineering
  • Geological and Geochemical Analysis
  • Reservoir Engineering and Simulation Methods
  • Geological formations and processes
  • Geological and Geophysical Studies
  • Geology and Paleoclimatology Research
  • Paleontology and Stratigraphy of Fossils
  • NMR spectroscopy and applications
  • Enhanced Oil Recovery Techniques
  • Global Energy and Sustainability Research
  • Geological Modeling and Analysis
  • Coal and Its By-products
  • Seismic Imaging and Inversion Techniques
  • Climate change and permafrost
  • Coal Properties and Utilization
  • Geophysical Methods and Applications
  • Groundwater flow and contamination studies
  • Oil Spill Detection and Mitigation

University of Calgary
2000-2023

Sinopec (China)
2015-2020

Geological Survey of Canada
2009-2019

Natural Resources Canada
2004-2019

CMC Research Institutes
2018

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2016

Snowdon (United States)
2007

Bedford Institute of Oceanography
1996

Society for Sedimentary Geology
1983-1995

University of Alberta
1991

10.1016/0146-6380(94)90060-4 article DE Organic Geochemistry 1994-08-01

Understanding the sources and pathways of pollutant transport to Arctic is fundamental our custody this sensitive ecosystem. To achieve such an understanding, we need go beyond a catalog environmental concentrations. Sediments, which are final sink for particle-active contaminants, can provide valuable resource assess fluxes contaminants. Here, interpret PAH distributions from widely distributed marine sediments both as indicators anthropogenic contribution illuminate pathways. We use...

10.1021/es950523k article EN Environmental Science & Technology 1996-03-01

Petroleum has been found in Canadian frontier basins reservoirs which have undergone low levels of thermal alteration (vitrinite reflectance <=0.6%Ro). Paraffin indices, stable carbon and hydrogen isotope contents, pristane to nC17 ratios, diterpenoid biologic markers used assess the level maturity hydrocarbons reservoir independently itself surrounding shale units. In Tertiary Beaufort-Mackenzie basin, naphthenic oils condensates generated from terrestrially derived organic matter source...

10.1306/03b5a313-16d1-11d7-8645000102c1865d article EN AAPG Bulletin 1982-01-01

Cretaceous volcanic rocks, which consist mainly of basalt flows and pyroclastic occur on northern Ellesmere Island, Axel Heiberg northernmost Amund Ringnes Island as part the Sverdrup Basin succession. Volcanic rocks are associated with each four regional transgressive–regressive (T–R) cycles that constitute clastic succession Valanginian – early Barremian, late Barremian Aptian, latest Aptian Cenomanian, Cenomanian Maastrichtian age; component increases northward. The centre volcanism...

10.1139/e88-118 article EN Canadian Journal of Earth Sciences 1988-08-01

Cretaceous volcanic rocks, which consist mainly of basalt flows and pyroclastic occur on northern Ellesmere Island, Axel Heiberg northernmost Amund Ringnes Island as part the Sverdrup Basin succession. Volcanic rocks are associated with each four regional transgressive–regressive (T–R) cycles that constitute clastic succession Valanginian – early Barremian, late Barremian Aptian, latest Aptian Cenomanian, Cenomanian Maastrichtian age; component increases northward. The centre volcanism...

10.1139/e89-236 article EN Canadian Journal of Earth Sciences 1989-12-01

Pinosylvin dimethyl ether and three other stilbene ethers were prepared by condensing the appropriate diethylbenzylphosphonates with an aromatic aldehyde. Cleavage of pinosylvin boron tribromide gave in good yield monomethyl ether, while fusion pyridine hydrochloride yielded pinosylvin.

10.1139/v70-253 article EN Canadian Journal of Chemistry 1970-05-15

Research Article| July 01, 2000 Reversal of the regional-scale flow system Williston basin in response to Pleistocene glaciation Stephen Grasby; Grasby 1Geological Survey Canada, 3303 33rd Street N.W., Calgary, Alberta T2L 2A7, Canada Search for other works by this author on: GSW Google Scholar Kirk Osadetz; Osadetz Robert Betcher; Betcher 2Water Resources Branch, Manitoba Natural Resources, Box 18, 200 Saulteaux Crescent, Winnipeg, R3J 3W3, Frank Render Author and Article Information...

10.1130/0091-7613(2000)28<635:rotrfs>2.0.co;2 article EN Geology 2000-01-01

The Rock-Eval thermal maturation parameter (Tmax) may occasionally be suppressed relative to surrounding rock units. This is commonly assumed result from either a bitumen contribution the S2 peak or presence of sulfur-rich (and hence thermally labile) kerogen. phenomenon frequently coincident with high natural gamma-ray signature and elevated hydrogen index (HI) total organic carbon (TOC) contents. Determination maturity such units relies on interpolation Tmax direct estimation extent...

10.1306/7834d4c2-1721-11d7-8645000102c1865d article EN AAPG Bulletin 1995-01-01

10.1016/0146-6380(91)90018-f article EN Organic Geochemistry 1991-01-01

The Ordovician Trenton Group (Sherman Fall and Cobourg formations) the Lindsay (Collingwood Member) Blue Mountain formations of southwestern Ontario were examined using Rock-Eval pyrolysis, gas chromatography, chromatography-mass spectrometry, incident-light microscopy to evaluate their paleodepositional environments, thermal maturities, source rock potential. All units contain sufficient amount oil-prone (type II), predominantly marine organic matter be considered as petroleum rocks....

10.1306/e4fd41d9-1732-11d7-8645000102c1865d article EN AAPG Bulletin 1999-01-01

Institut Francais du Petrole's two-dimensional model, temispack, is used to discuss the functioning of petroleum systems in Williston basin along a 330-km-long section, focusing on four regional source intervals: Ordovician Yeoman formation, Lower Devonian Winnipegosis Formation, Upper DevonianuLower Mississippian Bakken and Lodgepole formation. Thermal history calibration against present temperature rock maturity profiles suggests that can be divided into region constant heat flow about 55...

10.1306/64ed87aa-1724-11d7-8645000102c1865d article EN AAPG Bulletin 1996-01-01

ABSTRACT Four petrographically and compositionally distinctive source rocks in southeastern Saskatchewan southwestern Manitoba produce oils with restricted stratigraphic occurrence, which includes their sources. Kukersites, marine Type I Middle Upper Ordovician formations, are the of (Family A) occur to Devonian strata characterized by diagnostic saturate fraction gas chromatograms (SFGC) accompanied low C23 tricyclic/C30 pentacyclic terpane (C23/C30) ratios a C34 hopane prominence....

10.35767/gscpgbull.40.3.254 article EN Bulletin of Canadian Petroleum Geology 1992-09-01
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