Stratigraphy of Mid-Cretaceous Blackleaf and lower part of the Frontier formations in parts of Beaverhead and Madison counties, Montana
Book
·
OSTI ID:5857067
The Albian Blackleaf Formation and the overlying Cenomanian to Turonian lower part of the Frontier formation in Beaverhead and Madison counties, Montana, were deposited within or east of the southwestern Montana fold-and-thrust belt. The Blackleaf Formation is subdivided into four mappable lithofacies units. The Albian age for this formation was determined from fossil bivalves and palynomorphs. The lower part of the Frontier Formation is composed of lithic sandstone, conglomerate, and subordinate mudstone and shale.
- OSTI ID:
- 5857067
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stratigraphy of mid-cretaceous Black-leaf and lower part of the frontier formations in parts of Beaverhead and Madison counties
Correlation of Cretaceous Blackleaf and Frontier Formations in parts of Madison and Beaverhead Counties, Montana
Correlation of Lower and Upper Cretaceous Blackleaf Formation, Lima Peaks area to eastern Pioneer Mountains, southwestern Montana foreland basin
Book
·
Fri Jan 01 00:00:00 EST 1988
·
OSTI ID:5857067
Correlation of Cretaceous Blackleaf and Frontier Formations in parts of Madison and Beaverhead Counties, Montana
Conference
·
Fri Aug 01 00:00:00 EDT 1986
· Am. Assoc. Pet. Geol., Bull.; (United States)
·
OSTI ID:5857067
Correlation of Lower and Upper Cretaceous Blackleaf Formation, Lima Peaks area to eastern Pioneer Mountains, southwestern Montana foreland basin
Conference
·
Tue May 01 00:00:00 EDT 1990
· AAPG Bulletin (American Association of Petroleum Geologists); (USA)
·
OSTI ID:5857067
Related Subjects
58 GEOSCIENCES
MONTANA
STRATIGRAPHY
CONGLOMERATES
CORRELATIONS
FOSSILS
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
RESEARCH PROGRAMS
SANDSTONES
SHALES
US DOI
FEDERAL REGION VIII
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
NATIONAL ORGANIZATIONS
NORTH AMERICA
ROCKS
SEDIMENTARY ROCKS
US ORGANIZATIONS
USA
580100* - Geology & Hydrology- (-1989)
MONTANA
STRATIGRAPHY
CONGLOMERATES
CORRELATIONS
FOSSILS
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
RESEARCH PROGRAMS
SANDSTONES
SHALES
US DOI
FEDERAL REGION VIII
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GEOLOGY
NATIONAL ORGANIZATIONS
NORTH AMERICA
ROCKS
SEDIMENTARY ROCKS
US ORGANIZATIONS
USA
580100* - Geology & Hydrology- (-1989)