Depositional environments and hydrocarbon potential of Copper Ridge dolomite in Union County, Tennessee

Conference · Mon Aug 01 04:00:00 EDT 1988 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:5587713

Conklin, M W ^[1]

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1. Viking Resources Corporation, Canton, OH (USA)

The Upper Cambrian Copper Ridge Dolomite in Union County, Tennessee, consists of subtidal, intertidal, and supratidal facies that formed in a hypersaline setting. Subtidal facies are dark and thrombolitic; intertidal facies contain thick, planar to wavy laminations, and may be cross-stratified. Supratidal facies are light colored, mud cracked, and thinly laminated. Algal stromatolites, thought to comprise up to 60% of the unit, were not found to be a major rock type in the area studied. Facies in the unit occur as cyclic, shallowing-upward sequences. The lower member consists of complete cycles, whereas the upper member consists of partial cycles. Cycles are a result of low-amplitude sea level oscillations with long oscillation periods and slow rates of subsidence. Partial cycles lack subtidal facies and were probably caused by tidal flat progradation. Nearly all cement in the unit consists of white sparry (saddle) dolomite, and occurs in vugs, fractures, and interparticle voids. White sparry dolomite displays cathodoluminescence that consists of dark to bright to dull zones. This sequence suggests that cementation occurred during deep burial of the unit. Total organic carbon content of carbonate rocks in the unit indicates that the rocks are not a potential hydrocarbon source. Porous zones with up to 12% porosity occur in thrombolitic rocks and packstones to grainstones.

• OSTI ID: 5587713
• Report Number(s): CONF-8809345--
• Conference Information: Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (USA) Journal Volume: 72:8
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ALKALINE EARTH METAL COMPOUNDS
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CAMBRIAN PERIOD
CARBON COMPOUNDS
CARBONATE MINERALS
CARBONATES
DEPOSITION
DIAGENESIS
DOLOMITE
FEDERAL REGION IV
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
MAGNESIUM CARBONATES
MAGNESIUM COMPOUNDS
MATURATION
MINERAL RESOURCES
MINERALS
NATURAL GAS DEPOSITS
NORTH AMERICA
OXYGEN COMPOUNDS
PALEOZOIC ERA
PERMEABILITY
PETROLEUM DEPOSITS
POROSITY
RESERVOIR ROCK
RESOURCES
SOURCE ROCKS
TENNESSEE
USA