A volcanic connection between the Pennsylvanian of the Mid-Continent and Appalachian regions

Conference · Mon Feb 01 00:00:00 EST 1993 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:5976436

Lyons, P C; Congdon, R D; Outerbridge, W F; Evans, Jr, H F; Dulong, F T ^[1]; Haley, B ^[2]

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1. Geological Survey, Reston, VA (United States)
2. Arkansas Geological Commission, Little Rock, AR (United States)

Until now, it has not been possible to find key beds that precisely connect the Pennsylvanian section in the Mid-Continent and Appalachian regions. Altered volcanic ash deposits (tonsteins) offer the potential for high-precision stratigraphic correlation. The Fire Clay tonstein which is chemically distinct from the other five Middle Pennsylvanian tonstein beds in the central Appalachian basin, has a unimodal, rhyolitic fingerprint'' based on glass-inclusion data (n = 109) from volcanic quartz. This tonstein has been correlated over a distance of about 400 km in KY, WV, VA, and TN. Analyses of glass inclusions (n = 12) in volcanic quartz from a mixed-layer (illite/smectite) tonstein (K-bentonite) from near the Morrowan-Atokan boundary, recovered from cuttings in Arkansas wells (Phillips Petroleum Co., [number sign]2, Johnson City; Carter Oil Co., [number sign]1 Williams, Conway City), are identical, within the limits of analytical precision, to those from the Fire Clay tonstein.

• OSTI ID: 5976436
• Report Number(s): CONF-9303212-; CODEN: GAAPBC
• Journal Information: Geological Society of America, Abstracts with Programs; (United States), Vol. 25:1; Conference: 27. annual Geological Society of America (GSA) South-Central Section meeting, Fort Worth, TX (United States), 15-16 Mar 1993; ISSN 0016-7592
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
ARKANSAS
GEOLOGIC FORMATIONS
GEOCHEMISTRY
STRATIGRAPHY
KENTUCKY
TENNESSEE
VIRGINIA
WEST VIRGINIA
ASHES
CARBONIFEROUS PERIOD
COMPARATIVE EVALUATIONS
ILLITE
SMECTITE
VOLCANIC ROCKS
CHEMISTRY
CLAYS
COMBUSTION PRODUCTS
DEVELOPED COUNTRIES
EVALUATION
GEOLOGIC AGES
GEOLOGY
IGNEOUS ROCKS
MINERALS
NORTH AMERICA
PALEOZOIC ERA
RESIDUES
ROCKS
SILICATE MINERALS
USA
580000* - Geosciences