Sequence stratigraphy and evolution of the Antler foreland basin, east-central Nevada

Journal Article · Tue May 01 00:00:00 EDT 1990 · Geology; (USA)

DOI:https://doi.org/10.1130/0091-7613(1990)018<0422:SSAEOT>2.3.CO;2· OSTI ID:6140563

Trexler, Jr, J H; Nitchman, S P ^[1]

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1. Univ. of Nevada, Reno (USA)

The Mississippian Antler foreland basin contains siliciclastic sedimentary rocks that record a series of orogenic events along the western margin of North America from about 350 to 320 Ma. Our new stratigraphic and sedimentologic studies in Nevada indicate that the strata are not generally progradiational as previously described, and that uplift played a large role in basin evolution. We have recognized three unconformity-bounded stratigraphic sequences in the Antler basin in central Nevada: the Diamond Range submarine-fan system, the Newark Valley fluvial and delta-plain system, and the Green Springs deltaic and shelf-carbonate system. They propose a two-phase history for the antler orogeny: (1) collision of the western edge of North America with the Antler allochthon and downwarping of the continental margin (360-350 Ma), which resulted in deposition of the Diamond Range submarine-fan system; and (2) uplift and low-amplitude folding of the basin (350-320 Ma), accompanied by deposition of a thin veneer of reworked siliciclastic sediments (Newark Valley and Green Springs sequences) across a shallow-marine shelf. Siliciclastic sedimentation waned in the Late Mississippian and Early Pennsylvanian, and gradually gave way to carbonate sedimentation.

• OSTI ID: 6140563
• Journal Information: Geology; (USA), Vol. 18:5; ISSN 0091-7613
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
NEVADA
SEDIMENTARY BASINS
OROGENESIS
STRATIGRAPHY
CARBONATE ROCKS
CARBONIFEROUS PERIOD
CONTINENTAL MARGIN
DEFORMATION
DEPOSITION
GEOLOGIC HISTORY
GEOLOGIC MODELS
GROUND UPLIFT
SEDIMENTARY ROCKS
SEDIMENTATION
TECTONICS
FEDERAL REGION IX
GEOLOGIC AGES
GEOLOGIC STRUCTURES
GEOLOGY
NORTH AMERICA
PALEOZOIC ERA
ROCKS
USA
580000* - Geosciences