Calculations of sulfate diffusivity for lithofacies of the Miocene Monterey Formation
Conference
·
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
OSTI ID:7262323
- Indiana Univ., Bloomington (United States)
Integration of stable sulfur isotopic data, total sulfur content, uncompacted porosity, and estimated sediment density of the Miocene Monterey Formation have been used to calculate the extent of sulfate diffusion in the upper tens of centimeters of sediment during early diagenesis. Extent of sulfate diffusion, expressed as the number of pore volumes of water filtered through a volume of sediment, varies from three to infinity with the majority of values in the range of three to seven. Diffusion of sulfate into sediments is strongly influenced by bioturbation. Interbedding of laminated and massive Monterey strata within the Santa Maria basin indicates sporadic presence of bioturbating organisms during deposition. In addition to a negative correlation between bioturbation and calculated sulfate diffusivity, a positive correlation exists between calculated sulfate diffusivity and clastic input. Clastic indices are highest for the upper siliceous facies, intermediate in the lower calcareous facies, and lowest for the phosphatic facies. Calculation of sulfate diffusivity may be used to infer the extent of biomineralization within sediments. High sulfate diffusivity indicates extensive recycling of organic matter by aerobes; low values indicate minor recycling by aerobes and/or major decomposition of organic matter by anaerobes provides sulfate concentration in the sediment was high enough to sustain biogenic sulfate reduction.
- OSTI ID:
- 7262323
- Report Number(s):
- CONF-910403--
- Conference Information:
- Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 75:3
- Country of Publication:
- United States
- Language:
- English
Similar Records
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Journal Article
·
Fri Jan 31 23:00:00 EST 1992
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·
OSTI ID:5358169
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Conference
·
Mon Dec 31 23:00:00 EST 1984
· Geol. Soc. Am., Abstr. Programs; (United States)
·
OSTI ID:6877336
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Conference
·
Tue Jul 01 00:00:00 EDT 1986
· Am. Assoc. Pet. Geol., Bull.; (United States)
·
OSTI ID:5187151
Related Subjects
58 GEOSCIENCES
580000* -- Geosciences
CALIFORNIA
CENOZOIC ERA
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMISTRY
DEVELOPED COUNTRIES
DIAGENESIS
DIFFUSION
GEOCHEMISTRY
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GROUND WATER
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INTERSTITIAL WATER
ISOTOPES
LEVELS
MIOCENE EPOCH
NORTH AMERICA
OXYGEN COMPOUNDS
PALEOCLIMATOLOGY
PALEONTOLOGY
PHOSPHATE ROCKS
POROSITY
ROCKS
SANDSTONES
SEA LEVEL
SEDIMENTARY ROCKS
SULFATES
SULFIDES
SULFUR COMPOUNDS
SULFUR ISOTOPES
TERTIARY PERIOD
USA
WATER
580000* -- Geosciences
CALIFORNIA
CENOZOIC ERA
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMISTRY
DEVELOPED COUNTRIES
DIAGENESIS
DIFFUSION
GEOCHEMISTRY
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GROUND WATER
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INTERSTITIAL WATER
ISOTOPES
LEVELS
MIOCENE EPOCH
NORTH AMERICA
OXYGEN COMPOUNDS
PALEOCLIMATOLOGY
PALEONTOLOGY
PHOSPHATE ROCKS
POROSITY
ROCKS
SANDSTONES
SEA LEVEL
SEDIMENTARY ROCKS
SULFATES
SULFIDES
SULFUR COMPOUNDS
SULFUR ISOTOPES
TERTIARY PERIOD
USA
WATER