paragenesis, mineralization and hydrocarbon emplacement in
TRANSCRIPT
Paragenesis, Mineralization, and Hydrocarbon Emplacement in the Trenton/Black River Group in Central Kentucky
Warren H. AndersonKentucky Geological Survey
TRENTON WORKSHOPJune 4, 2002Lexington, Ky.
Hydrothermal Mineral ActivityPre-mineralization events
Shearing, Faulting
MineralizationBase metal mineralization
including dolomiteIgneous component
Post-mineralization eventsFaulting, Gypsum
Dolomitization?Early post-diagenetic or hydrothermal
Applications to the Central MidcontinentEach district or mine is unique
Complex Parameters
1. Physical-chemical2. Fluid-gas interaction3. Pressure-temperature4. Salinity-concentrations-pH4. Age and timing5. Varience in Trenton lithlogy
Tectonic Features Map
Bitumen
Walker
Trinity Church
Field Stop
Quarry
Caldwell Stone
Lexington Quarry
Walker
Trinity Church
Field Stop
Quarry
Caldwell Stone
Lexington Quarry
Walker
Trinity Church
Field Stop
Quarry
Caldwell Stone
Lexington Quarry
, Nuttall, 95
Walker
Trinity Church
Field Stop
Quarry
Caldwell Stone
Lexington Quarry
Conclusions
HydrothermalDolomitization vs. MineralizationLate-stage pathfinder mineralsLate-stage fluids=dolomitization
less saline, cooler?