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Claggett Formation

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Journal Article
Published: 01 July 1998
Journal of Sedimentary Research (1998) 68 (4): 615–631.
...Raymond R. Rogers Abstract Superb outcrop exposures and abundant subcrop data allow the accurate tracing of two stratigraphic discontinuities updip into fully nonmarine strata of the Campanian Two Medicine and Judith River formations (Western Interior foreland basin, Montana). These throughgoing...
Journal Article
Published: 01 October 1988
Canadian Journal of Earth Sciences (1988) 25 (10): 1554–1563.
...S. G. Whittaker; T. K. Kyser; W. G. E. Caldwell Abstract Sediments of the Lea Park Formation in south-central Saskatchewan were deposited in the Claggett sea during the Late Cretaceous (Campanian) Claggett marine cycle. Rocks of the Lea Park Formation have remained virtually unaffected...
Journal Article
Published: 01 May 1987
Canadian Journal of Earth Sciences (1987) 24 (5): 967–984.
...S. G. Whittaker; T. K. Kyser; W. G. E. Caldwell Abstract The Upper Cretaceous (Campanian) Lea Park Formation of south-central Saskatchewan, a product of continuous deposition in the Claggett sea of the Western Interior basin, contains unusually well-preserved fossil shells ideally suited...
Journal Article
Published: 01 April 2016
Journal of Sedimentary Research (2016) 86 (4): 394–407.
.... The Elk Basin anticline, located in the northern portion of the Bighorn Basin, contains paleoseismites in Campanian strata along its eastern (forelimb) and western (back limb) margins. In the shallow-marine Telegraph Creek and Claggett formations, convolute bedding typically involves individual sandstone...
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Journal Article
Journal: AAPG Bulletin
Published: 01 January 1965
AAPG Bulletin (1965) 49 (1): 116–117.
... are readily distinguishable; they are, in ascending order, the Eagle Sandstone, Claggett Shale, Judith River Formation, and Bearpaw Shale. In the western part of the basin the equivalent stratigraphic section includes the Mesaverde (Gebo Formation of Hewitt), and the Meeteetse Formation. Non-marine deposits...
Journal Article
Journal: AAPG Bulletin
Published: 01 March 1965
AAPG Bulletin (1965) 49 (3): 277–285.
... section includes the Mesaverde Formation (Gebo Formation of Hewitt), Meeteetse Formation, and Lance Formation. In the eastern part of the basin four formations are readily distinguishable; they are, in ascending order, the Eagle Sandstone, Claggett Shale, Judith River Formation, and Bearpaw Shale. Major...
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Journal Article
Published: 15 April 2018
Journal of Paleontology (2018) 92 (4): 611–633.
...Robert W. Scott; Bradley W. Claggett Abstract Species of the megaorder Poromyata, although common and relatively diverse in Albian–lower Cenomanian Comanchean strata in Texas and northern Mexico, have been neglected as biostratigraphic markers and paleoecological indicators. Since 1852, more than...
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Journal Article
Published: 01 April 2011
Journal of Sedimentary Research (2011) 81 (4): 266–283.
..., and is interpreted to represent a major change in depositional environment, from meandering river systems in the lower three members to a low-accommodation, braided river system. Improved age constraints on the Wahweap Formation indicate that the middle and upper members were deposited during the eustatic Claggett...
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Journal Article
Published: 01 May 1993
Canadian Journal of Earth Sciences (1993) 30 (5): 1066–1075.
... correlation of the dinosaur-dominated paleofauna recovered from the Two Medicine Formation, and help constrain the timing of the Claggett and Bearpaw transgressions. The ages support correlation of the richly fossiliferous upper lithofacies suite of the Two Medicine Formation with exposures of the Judith...
Journal Article
Published: 01 August 1970
Canadian Journal of Earth Sciences (1970) 7 (4): 1099–1108.
... Montana but both differ from the type Virgelle Sandstone, with which they have been equated. The Pakowki Formation of Alberta represents the Claggett of Montana plus lower parts of the Judith River Formation. The remainder of the Judith River Formation is equivalent to the Foremost and Oldman Formations...
Journal Article
Published: 29 October 2002
Canadian Journal of Earth Sciences (2002) 39 (10): 1553–1577.
.... The Pakowki transgression occurred at around 81.0 Ma based on a U–Pb zircon age of 80.7 ± 0.2 Ma from bentonite beds just above the bottom of the Pakowki Formation in southern Alberta. This age agrees with previous ages of 80.7 ± 0.6 Ma for the Ardmore Bentonite Beds and ∼81.0 Ma for the Claggett...
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Journal Article
Journal: AAPG Bulletin
Published: 01 March 1980
AAPG Bulletin (1980) 64 (3): 316–338.
... is divided into three members—the Virgelle Sandstone Member, 80 to 130 ft (24 to 40 m) thick, and the middle and upper members, which together are as much as 220 ft (67 m) thick. The Eagle Sandstone is underlain by the Telegraph Creek Formation and overlain by the Claggett Shale, both of Late Cretaceous age...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1965
AAPG Bulletin (1965) 49 (11): 1801–1823.
... depositional patterns and present structural configuration are closely related to distribution of that thick sedimentary wedge. Coarse arkosic conglomerate was deposited along the southern fault-controlled margin of the Belt embayment. Cambrian through Mississippian formations and parts of the Cretaceous...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 1964
AAPG Bulletin (1964) 48 (11): 1877–1878.
... sedimentary wedge. Course arkose conglomerates were deposited along the southern fault-controlled margin of the Belt embayment. Cambrian through Mississippian formations and parts of the Cretaceous section are typically thicker in east-west zones essentially coincident with the old Belt embayment than...
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1948
AAPG Bulletin (1948) 32 (1): 52–67.
... Paleocene through Lance, Lennep, Bearpaw, Judith River, Claggett, Eagle, and Telegraph Creek formations of the Montana group of Upper Cretaceous age to the Niobrara shale of the Upper Colorado group is exposed on the flanks of the structure. The crest of the structure is cut by numerous normal transverse...
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Journal Article
Journal: AAPG Bulletin
Published: 01 July 1980
AAPG Bulletin (1980) 64 (7): 969–987.
... intervals represented by one or more formations and their correlatives. The intervals selected correspond to (1) Mowry Shale, (2) Belle Fourche Shale and Greenhorn Formation, (3) Cartile Shale, (4) Niobrara and Telegraph Creek Formations and Eagle Sandstone, and (5) Claggett Shale and Judith River Formation...
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Series: DNAG, Centennial Special Volumes
Published: 01 January 1990
DOI: 10.1130/DNAG-CENT-v4.161
EISBN: 9780813754161
... with archaeological associations may obscure natural flood-plain stratification, while alluvial events can re-sort artifacts and alter spatial distributions of prehistoric activities. Soil formation and flood-plain erosion may change or destroy portions of the archaeological record even more. Still, a comprehensive...
Journal Article
Journal: GSA Bulletin
Published: 01 July 1946
GSA Bulletin (1946) 57 (7): 675–686.
... syncline regions of southeastern Montana. The investigation indicates that the stratigraphic units traced and mapped as Hell Creek, Tullock, Lebo, and Tongue River formations from significant fossil vertebrate localities in the vicinity of Polecat Bench and Heart Mountain, Wyoming, correlate with units...
Journal Article
Published: 01 June 2003
Bulletin of Canadian Petroleum Geology (2003) 51 (2): 155–176.
... and Eagle formations, the Pakowki and Claggett formations consist of dominantly thinly-bedded, black marine shales ( Tovell, 1956 ). Within the lower portion are several, often extensive bentonite beds with varying thicknesses. Payenberg et al. (2002) showed that these bentonite beds are all part...
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Journal Article
Journal: AAPG Bulletin
Published: 01 June 1982
AAPG Bulletin (1982) 66 (6): 750–774.
... the “littoral energy fence” during initial phases of the rapid transgression that deposited the overlying shale and equivalents, including the Claggett Shale of central Montana. The resulting shoreface retreat left residual sand sheets on the shelf where the sand was further transported, structured, and shaped...
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