Benton Group

E934194

The Benton Group is a sequence of Cretaceous-age sedimentary rock formations in the Western Interior of North America, notable for its marine shales and chalks that record the history of the Western Interior Seaway.

All labels observed (1)

Label Occurrences
Benton Group canonical 1

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf geologic group
stratigraphic unit
associatedWith Cenomanian–Turonian transgression
chronostratigraphicPosition Cretaceous System
linked to: Cretaceous

Mesozoic
linked to: Mesozoic Era
contains bentonite beds
fossil ammonites
fossil bivalves
fossil foraminifera
fossil marine invertebrates
organic-rich shale
country Canada
United States
depositionalSetting epicontinental seaway
environmentOfDeposition marine
geologicAge Cretaceous
geologicProvince Western Interior Basin
hasColor black
dark gray
hasStratigraphicImportance regional correlation marker in Western Interior
lithology chalk
marine shale
mudstone
sandstone
siltstone
locatedIn Western Interior of North America
namedFor Benton Shale
linked to: Graneros Shale
overlies Dakota Sandstone
linked to: Dakota Formation
partOf Western Interior Seaway stratigraphic record
potentialResource hydrocarbon source rock
records history of the Western Interior Seaway
sea-level fluctuations of the Western Interior Seaway
researchField paleontology
sedimentology
stratigraphy
stratigraphicRank group
subunit Belle Fourche Shale
Carlile Shale
linked to: Graneros Shale

Graneros Shale
Greenhorn Formation
underlies Niobrara Chalk
Niobrara Formation
linked to: Niobrara Chalk
usedFor biostratigraphy
chemostratigraphy
sequence stratigraphy

How these facts were elicited

Referenced by (1)

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

Dakota Formation underlies Benton Group