Estuarine sandstones in Lower Pennsylvanian strata in the Indiana portion of the Illinois basin
Conference
·
· AAPG Bulletin (American Association of Petroleum Geologists); (United States)
OSTI ID:5675675
- Indiana Geological Survey, Bloomington (United States)
A program to integrate subsurface and outcrop data of known aquifers in lower Pennsylvanian strata in west-central Indiana has concentrated on mapping the extent and characteristics of thick (> 10 m) sandstone bodies in the area. These sandstone bodies are narrow linear features that may rest erosively on coals but otherwise are encased in, and locally interfinger with, flaser- to lenticular-bedded sandstones and mudstones. The interbedded sandstones and mudstones display abundant evidence of tidal influence during deposition. Locally, a thick sequence (20 m) of vertically stacked flaser and lenticular beds may record multiple neap-spring cycles, similar to modern features present in the mixed fluvial-tidal zones at the head of the Bay of Fundy. These beds are laterally adjacent to a thick (15 m) sandstone dominated by large-scale planar and trough cross-stratified sets. This suggests that these sandstone bodies were deposited as barforms within an upper estuarine environment concurrent with the deposition of muddy sediments. Sandy barforms in such settings could be entirely encased in muds resulting in stratigraphically isolated sandstone bodies. In the shallow subsurface these sandstones serve as aquifers but are also potential hydrocarbon reservoirs in the deeper parts of the basin.
- OSTI ID:
- 5675675
- Report Number(s):
- CONF-910403--
- Conference Information:
- Journal Name: AAPG Bulletin (American Association of Petroleum Geologists); (United States) Journal Volume: 75:3
- Country of Publication:
- United States
- Language:
- English
Similar Records
Tidal influence in fluvial strata - A key element in high-resolution sequence stratigraphic correlation
Tide and storm-dominated sand ridges on a muddy shelf: Cottage Grove sandstone (upper Pennsylvanian), northwestern Oklahoma
Fourier and autocorrelation analysis of estuarine tidal rhythmites, lower Breathitt Formation (Pennsylvania), eastern Kentucky, USA
Conference
·
Tue May 01 00:00:00 EDT 1990
· AAPG Bulletin (American Association of Petroleum Geologists); (USA)
·
OSTI ID:6602182
Tide and storm-dominated sand ridges on a muddy shelf: Cottage Grove sandstone (upper Pennsylvanian), northwestern Oklahoma
Journal Article
·
Sat Oct 01 00:00:00 EDT 1988
· AAPG (Am. Assoc. Pet. Geol.) Bull.; (United States)
·
OSTI ID:6025718
Fourier and autocorrelation analysis of estuarine tidal rhythmites, lower Breathitt Formation (Pennsylvania), eastern Kentucky, USA
Journal Article
·
Thu Dec 31 23:00:00 EST 1992
· Journal of Sedimentary Petrology; (United States)
·
OSTI ID:6427851
Related Subjects
02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000* -- Geosciences
AQUIFERS
CARBONIFEROUS PERIOD
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
ILLINOIS BASIN
INDIANA
MAPPING
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PALEOZOIC ERA
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRATIGRAPHY
USA
020200 -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580000* -- Geosciences
AQUIFERS
CARBONIFEROUS PERIOD
DEVELOPED COUNTRIES
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGY
ILLINOIS BASIN
INDIANA
MAPPING
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PALEOZOIC ERA
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STRATIGRAPHY
USA