Apatite fission-track thermochronology of the southern Appalachian Basin: Maryland, West Virginia, and Virginia
- Rensselaer Polytechnic Institute, Troy, NY (USA)
Apatite fission-track apparent ages (246 {plus minus} 37 to 95 {plus minus} 18 Ma) for 26 samples of upper Devonian (Hampshire and Chemung Formations) and middle Devonian age (Tioga Ash Bed) from the southern Appalachian Basin of Maryland, Virginia, and West Virginia, along with confined track length distributions for 13 of these samples, suggest that uplift was contemporaneous with Triassic-Jurassic extension along the Atlantic continental margin. Uplift, as measured by apatite fission-track analysis, began earliest in the northwestern section on the Cumberland Plateau at {approximately}225 {plus minus} 25 Ma. This area probably required the least amount of erosional unroofing ({approximately}3.1 km). Samples from the Valley and Ridge Province of northern West Virginia, Virginia, and Maryland yield progressively younger apatite fission-track apparent ages to the east (ranging from 163 {plus minus} 10 to 95 {plus minus} 18 Ma). This is consistent with deeper burial in the eastern Appalachian Basin as indicated by increasing CAI indices and geodynamic modeling. The southwestern Virginia samples yield a mean apatite fission-track apparent age of 176 {plus minus} 11 Ma, which agrees with the Middle Jurassic apatite fission-track ages to the north.
- OSTI ID:
- 5667754
- Journal Information:
- Journal of Geology; (USA), Journal Name: Journal of Geology; (USA) Vol. 99:1; ISSN JGEOA; ISSN 0022-1376
- Country of Publication:
- United States
- Language:
- English
Similar Records
Thermal history of central and southern Appalachian basin based on apatite fission-track thermochronology
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Conference
·
Mon Aug 01 00:00:00 EDT 1988
· AAPG Bull.; (United States)
·
OSTI ID:6011302
Apatite fission-track thermochronology of the central and southern Appalachian Basin
Thesis/Dissertation
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Sat Dec 31 23:00:00 EST 1988
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OSTI ID:6643117
Apatite fission track evidence for post-Early Cretaceous erosional unroofing of Middle Pennsylvanian sandstones from the southern Appalachian Basin in Kentucky and Virginia
Conference
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Tue Dec 31 23:00:00 EST 1991
· Geological Society of America, Abstracts with Programs; (United States)
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OSTI ID:5810073
Related Subjects
58 GEOSCIENCES
580000* -- Geosciences
AGE ESTIMATION
APATITES
APPALACHIAN BASIN
CONTINENTAL MARGIN
DEVELOPED COUNTRIES
DEVONIAN PERIOD
FEDERAL REGION III
FISSION TRACKS
GEOLOGIC AGES
GEOLOGIC HISTORY
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GROUND UPLIFT
JURASSIC PERIOD
MARYLAND
MESOZOIC ERA
MINERALS
NORTH AMERICA
PALEOZOIC ERA
PARTICLE TRACKS
PHOSPHATE MINERALS
SEDIMENTARY BASINS
TRIASSIC PERIOD
USA
VIRGINIA
WEST VIRGINIA
580000* -- Geosciences
AGE ESTIMATION
APATITES
APPALACHIAN BASIN
CONTINENTAL MARGIN
DEVELOPED COUNTRIES
DEVONIAN PERIOD
FEDERAL REGION III
FISSION TRACKS
GEOLOGIC AGES
GEOLOGIC HISTORY
GEOLOGIC MODELS
GEOLOGIC STRUCTURES
GROUND UPLIFT
JURASSIC PERIOD
MARYLAND
MESOZOIC ERA
MINERALS
NORTH AMERICA
PALEOZOIC ERA
PARTICLE TRACKS
PHOSPHATE MINERALS
SEDIMENTARY BASINS
TRIASSIC PERIOD
USA
VIRGINIA
WEST VIRGINIA