Illinois Basin area

E812279

sedimentary basin structural basin

The Illinois Basin area is a major structural and sedimentary basin in the central United States, primarily underlying parts of Illinois, Indiana, and Kentucky, known for its thick Paleozoic rock sequences and significant fossil fuel and mineral resources.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (6)

Label	Occurrences
Illinois Basin	11
Illinois Basin area canonical	2
Illinois Basin region	2
Illinois coal mining region	2
Illinois Basin coal region	1
Illinois coal basin	1

How this entity was disambiguated

This entity first appeared as the object of triple T9643260 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Illinois Basin area
Context triple: [Harrodsburg Limestone, region, Illinois Basin area]

A. Michigan Basin
The Michigan Basin is a large, bowl-shaped sedimentary basin in the Great Lakes region known for its thick Paleozoic rock sequences and significant oil, gas, and mineral resources.
B. Arkoma Basin
The Arkoma Basin is a geologic sedimentary basin in the south-central United States, primarily in Arkansas and Oklahoma, known for its Paleozoic rock formations and significant natural gas and petroleum resources.
C. Mississippi Embayment
The Mississippi Embayment is a broad, low-lying structural trough and sedimentary basin of the central United States that extends northward from the Gulf of Mexico and encompasses parts of several states along the lower Mississippi River.
D. Illinois River Valley
The Illinois River Valley is a prominent Midwestern river valley in the U.S. state of Illinois, characterized by its broad floodplains, rich agricultural land, and historical role as a transportation and trade corridor.
E. Nashville Basin
The Nashville Basin is a geologic and topographic lowland in central Tennessee known for its fertile soils, karst features, and distinctive bowl-shaped landscape surrounding the city of Nashville.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Illinois Basin area
Target entity description: The Illinois Basin area is a major structural and sedimentary basin in the central United States, primarily underlying parts of Illinois, Indiana, and Kentucky, known for its thick Paleozoic rock sequences and significant fossil fuel and mineral resources.

A. Michigan Basin
The Michigan Basin is a large, bowl-shaped sedimentary basin in the Great Lakes region known for its thick Paleozoic rock sequences and significant oil, gas, and mineral resources.
B. Arkoma Basin
The Arkoma Basin is a geologic sedimentary basin in the south-central United States, primarily in Arkansas and Oklahoma, known for its Paleozoic rock formations and significant natural gas and petroleum resources.
C. Mississippi Embayment
The Mississippi Embayment is a broad, low-lying structural trough and sedimentary basin of the central United States that extends northward from the Gulf of Mexico and encompasses parts of several states along the lower Mississippi River.
D. Illinois River Valley
The Illinois River Valley is a prominent Midwestern river valley in the U.S. state of Illinois, characterized by its broad floodplains, rich agricultural land, and historical role as a transportation and trade corridor.
E. Nashville Basin
The Nashville Basin is a geologic and topographic lowland in central Tennessee known for its fertile soils, karst features, and distinctive bowl-shaped landscape surrounding the city of Nashville.
F. None of above. chosen

Statements (46)

Predicate	Object
instanceOf	sedimentary basin ⓘ structural basin ⓘ
boundedBy	Cincinnati Arch ⓘ Kankakee Arch ⓘ Ozark Uplift ⓘ linked to: Ozark Plateau
contains	Illinois Basin coalfield ⓘ
containsStratigraphy	Cambrian system ⓘ linked to: Cambrian Period Devonian system ⓘ linked to: Devonian Period Mississippian system ⓘ linked to: Mississippian Ordovician system ⓘ Pennsylvanian system ⓘ linked to: Carbondale Formation Permian system (locally thin or absent) ⓘ Silurian system ⓘ linked to: Silurian
country	United States ⓘ linked to: United States of America
depositionalHistory	marine shelf and shallow sea deposition during Paleozoic ⓘ
developedDuring	late Precambrian to early Paleozoic subsidence ⓘ
economicImportance	major fossil fuel province in the midcontinent region ⓘ
geologicAge	Paleozoic ⓘ
hasAlternativeName	Illinois Basin area ⓘ
hasMaximumThickness	more than 4,000 meters of sedimentary rocks ⓘ
hasResource	coal ⓘ dolomite ⓘ fluorspar ⓘ groundwater aquifers ⓘ lead-zinc mineralization ⓘ limestone ⓘ natural gas ⓘ oil shale ⓘ petroleum ⓘ
hasRockSequence	thick Paleozoic sedimentary rocks ⓘ
hasShape	broad asymmetrical structural depression ⓘ
hasStructuralFeature	basin axis trending northwest-southeast ⓘ gentle regional dip toward basin center ⓘ
knownFor	Mississippian carbonate reservoirs ⓘ extensive coal-bearing Pennsylvanian strata ⓘ
locatedIn	Illinois ⓘ Indiana ⓘ Kentucky ⓘ
overlies	Precambrian basement rocks ⓘ
partOf	central United States ⓘ
researchImportance	key area for studying Paleozoic stratigraphy of the midcontinent ⓘ
tectonicSetting	interior cratonic basin ⓘ
usedFor	coal mining ⓘ groundwater supply ⓘ oil and gas production ⓘ underground natural gas storage ⓘ

How these facts were elicited

Referenced by (19)

Full triples — surface form annotated when it differs from this entity's canonical label.

Harrodsburg Limestone → region → Illinois Basin area ⓘ

Salem Limestone → stratigraphicUnitOf → Illinois Basin ⓘ

subject linked to: Salem Limestone formation