Origin of late dolomite cement by CO sub 2 -saturated deep basin brines: Evidence from the Ozark region, central United States

Journal Article · Mon Apr 01 00:00:00 EST 1991 · Geology; (USA)

DOI:https://doi.org/10.1130/0091-7613(1991)019<0348:OOLDCB>2.3.CO;2· OSTI ID:5657170

Leach, D L; Plumlee, G S; Hofstra, A H; Landis, G P; Rowan, E L; Viets, J G ^[1]

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1. Geological Survey, Denver, CO (USA)

Studies of fluid inclusions in regionally extensive late dolomite cement (LDC) throughout the Ozark region show that CO{sub 2} effervescence was widespread during dolomite precipitation. On the basis of quantitative analyses of inclusion fluids, reaction-path modeling shows that LDC with trace amounts of sulfides can be deposited by effervescence of a CO{sub 2}-saturated basin brine as it migrates to shallower levels and lower confining pressures. This precipitation mechanism best explains occurences of LDC in the Ozark region and may account for LDC found in sedimentary basins worldwide.

• OSTI ID: 5657170
• Journal Information: Geology; (USA), Vol. 19:4; ISSN 0091-7613
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
ARKANSAS
SEDIMENTARY BASINS
DOLOMITE
ORIGIN
MISSOURI
GEOCHEMISTRY
BRINES
CARBON DIOXIDE
CARBONATE ROCKS
DEPOSITION
ENVIRONMENTAL TRANSPORT
GAS SATURATION
GEOLOGIC MODELS
INCLUSIONS
PRECIPITATION
RESERVOIR FLUIDS
RESERVOIR PRESSURE
SULFIDES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CARBONATE MINERALS
CARBONATES
CHALCOGENIDES
CHEMISTRY
DEVELOPED COUNTRIES
FEDERAL REGION VI
FEDERAL REGION VII
FLUIDS
GEOLOGIC STRUCTURES
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MASS TRANSFER
MINERALS
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
ROCKS
SATURATION
SEDIMENTARY ROCKS
SEPARATION PROCESSES
SULFUR COMPOUNDS
USA
580000* - Geosciences