Stratigraphic variation of sulfur isotopes in Colorado Corehole Number 1

Conference · Fri Apr 01 04:00:00 EST 1983 · Oil Shale Symp. Proc.; (United States)

OSTI ID:5286953

Smith, J W; Young, N B

Sulfur isotope distribution with stratigraphy is reported for organic and pyritic sulfur of Green River Formation oil shale samples selected to represent the 1600-foot (488 m) Parachute Creek Member in Colorado Corehole No. 1. In the saline zone where nahcolite and dawsonite occur in the oil shale and in the Mahogany zone the /sup 34/ values for organic sulfur and pyrite sulfur match with the pyrite sulfur slightly lighter than the organic sulfur. This is interpreted to demonstrate that organic matter supplied most of the sulfur to the sediment which became oil shale. Little sulfate reached the sediment so no sulfate reduction could occur to enrich the heavy sulfur isotope. No systematic increase in S/sup 34/ was detected in either pyrite or organic sulfur. A remarkably large increase in concentration of /sup 34/S occurring in a short stratigraphic span is demonstrated. This abrupt increase occurs near the middle of the Parachute Creek Member sediments. Above this point both pyrite and organic sulfur remain significantly enriched in /sup 34/S.

• OSTI ID: 5286953
• Report Number(s): CONF-830434-
• Conference Information: Journal Name: Oil Shale Symp. Proc.; (United States)
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040201* -- Oil Shales & Tar Sands-- Site Geology-- (-1989)
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMISTRY
COLORADO
DISTRIBUTION
DRILL CORES
ENERGY SOURCES
EVEN-EVEN NUCLEI
FEDERAL REGION VIII
FOSSIL FUELS
FUELS
GEOCHEMISTRY
GEOLOGIC DEPOSITS
GEOLOGY
GREEN RIVER FORMATION
IRON COMPOUNDS
IRON SULFIDES
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MATERIALS
MINERAL RESOURCES
MINERALS
NORTH AMERICA
NUCLEI
OIL SHALE DEPOSITS
OIL SHALES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PYRITE
RESOURCES
SPATIAL DISTRIBUTION
STABLE ISOTOPES
STRATIGRAPHY
SULFIDE MINERALS
SULFIDES
SULFUR 34
SULFUR COMPOUNDS
SULFUR CONTENT
SULFUR ISOTOPES
TRANSITION ELEMENT COMPOUNDS
USA