Thermopolis Shale
E938591
Thermopolis Shale is a Cretaceous-age marine shale formation in the Western Interior of North America, notable for its dark, fossil-bearing mudstones deposited in the Western Interior Seaway.
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
Cretaceous stratigraphic unit
ⓘ
geologic formation ⓘ shale formation ⓘ |
| color | dark gray ⓘ |
| contains |
bentonite beds
ⓘ
fossils ⓘ siltstone interbeds ⓘ |
| containsFossilType |
ammonites
GENERATED
ⓘ
bivalves GENERATED ⓘ foraminifera GENERATED ⓘ marine invertebrates GENERATED ⓘ trace fossils GENERATED ⓘ |
| containsMineral |
clay minerals
ⓘ
feldspar ⓘ pyrite ⓘ quartz ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| depositionalEnvironment | marine ⓘ |
| depositionalSetting | Western Interior Seaway NERFINISHED ⓘ |
| exposedIn |
Colorado
NERFINISHED
ⓘ
Montana NERFINISHED ⓘ South Dakota NERFINISHED ⓘ Wyoming NERFINISHED ⓘ |
| fossilPreservation | good ⓘ |
| geologicAge | Cretaceous NERFINISHED ⓘ |
| hasEconomicUse |
hydrocarbon source rock (locally)
ⓘ
seal rock in petroleum systems ⓘ |
| isPartOfSequence | Cretaceous marine transgressive–regressive cycles ⓘ |
| lithology |
marine shale
ⓘ
mudstone ⓘ |
| locatedIn |
United States of America
ⓘ
surface form:
United States
Western Interior of North America NERFINISHED ⓘ |
| namedAfter | Thermopolis, Wyoming NERFINISHED ⓘ |
| overlies | Mowry Shale (locally may vary) ⓘ |
| partOf | Western Interior Seaway succession NERFINISHED ⓘ |
| region | Rocky Mountain region NERFINISHED ⓘ |
| researchUse |
biostratigraphy
ⓘ
paleoenvironmental reconstruction ⓘ sequence stratigraphy ⓘ |
| stratigraphicUnitOf | Western Interior Basin NERFINISHED ⓘ |
| typicalTexture | fine-grained ⓘ |
| underlies |
Frontier Formation (locally may vary)
NERFINISHED
ⓘ
Muddy Sandstone (locally may vary) NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.