Depositional environments and regional sedimentological control of Caseyville Formation, southern Illinois basin

Conference · Tue Aug 01 00:00:00 EDT 1989 · AAPG Bulletin (American Association of Petroleum Geologists); (USA)

OSTI ID:5535453

Nelson, W J; Pius Weibel, C ^[1]

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1. Illinois State Geological Survey, Champaign (USA)

During the Morrowan Epoch (earliest Pennsylvanian), the Eastern Interior basins of the US were characterized by a fluviatile system draining generally southwestward from central Pennsylvanian to the Arkoma basin of northern Arkansas. In the southern Illinois basin, the system deposited the Casevylle Formation, consisting of two prominent cliff-forming quartzose sandstones with common quartz gravel, separated and succeeded by finer-grained, clastic intervals. Outcrop mapping in southernmost Illinois indicates that these cliff formers, the Battery Rock and Pounds Sandstone members, are laterally widespread and generally continuous, but variable in thickness. The underlying Wayside Sandstone Member, the intervening Drury Shale Member, and strata immediately succeeding the Caseyville consist of variable sequences of shales, siltstones, thin-bedded sandstones, and local ledge-forming sandstones. Rare lenticular coals are scattered through the Caseyville. The authors interpret the sandstone members to be dominantly of fluviatile-deltaic origin and the intervening, finger-grained intervals to be of deltaic and, at least in part, marginal-marine origin. Marine strata within the Drury Shale Member and the strata immediately overlying the Caseyville Formation contain scattered body fossils and trace fossils suggesting marine deposition. The Wayside/Battery Rock and Drury/Pounds cycles are tentatively correlated with similar cycles in the Appalachian and Arkoma basins. This correlation suggests regional sedimentological control.

• OSTI ID: 5535453
• Report Number(s): CONF-8909166-; CODEN: AABUD
• Journal Information: AAPG Bulletin (American Association of Petroleum Geologists); (USA), Vol. 73:8; Conference: American Association of Petroleum Geologists (AAPG) eastern section meeting, Blommington, IN (USA), 10-13 Sep 1989; ISSN 0149-1423
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
GEOLOGIC FORMATIONS
DEPOSITION
SEDIMENTATION
ILLINOIS
COAL DEPOSITS
FOSSILS
PENNSYLVANIAN PERIOD
SANDSTONES
SEDIMENTARY BASINS
FEDERAL REGION V
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
MINERAL RESOURCES
NORTH AMERICA
RESOURCES
ROCKS
SEDIMENTARY ROCKS
USA
020200* - Petroleum- Reserves
Geology
& Exploration