scholarly journals Lower Cretaceous Fort St. John Group and Upper Cretaceous Dunvegan Formation of the foothills and plains of Alberta, British Columbia, District of Mackenzie and Yukon Territory

1982 ◽  
Author(s):  
D F Stott
Keyword(s):  
British Columbia ◽  
Lower Cretaceous ◽  
Upper Cretaceous ◽  
Yukon Territory

Nearshore articulate crinoid from the Albian of Alberta, Canada (Early Cretaceous, Echinodermata)

2011 ◽  
Vol 48 (4) ◽  
pp. 719-727 ◽  
Author(s):  
William I. Ausich ◽  
Robin A. Buckley ◽  
A. Guy Plint
Keyword(s):  
British Columbia ◽  
Early Cretaceous ◽  
Lower Cretaceous ◽  
Upper Cretaceous ◽  
Distal Portion ◽  
Peace River ◽  
The North ◽  
Facies Change ◽  
Northern Alberta ◽  
Facies Transition

During the middle Albian, a southward incursion of the Boreal Ocean flooded northern Alberta and adjacent British Columbia, forming a large embayment known as the Hulcross Sea. Marine mudstones of the Hulcross Formation and Harmon Member of the Peace River Formation record transgression, whereas sandstones of the Cadotte Member of the Peace River Formation record shoreline regression to the north. Abundant hummocky and swaley lamination in the Cadotte sandstone attest to the influence of storms on a shallow shelf. The Cadotte sandstone undergoes a lateral facies change from mud-free shoreface sandstone in the south to heterolithic offshore facies in the north. An articulated crinoid was found within a hummocky sandstone bed about 15 km seaward (north) of the shoreface-shelf facies transition. The articulated state of the crinoid indicates that it was buried very rapidly, and never exhumed. The arms through 20 mm of the column are preserved, but because the details of the aboral cup are not well preserved, this specimen must be left in open nomenclature. The elliptical columnals with a concave latus in the distal portion of the preserved column ally this specimen to the Bourgueticrinida, although with details of the aboral cup lacking and other characters atypical for Mesozoic bourgueticrinids, the Canadian specimen is placed in Bathycrinidae indeterminate. The oldest previously recorded bathycrinids were from the Upper Cretaceous (Maastrichtian), thus this report extends their range to the Lower Cretaceous (Albian).

Dinosaur Tracks, Columbosauripus ungulatus (Saurischia: Coelurosauria), from the Dunvegan Formation (Cenomanian) of Northeastern British Columbia

1975 ◽  
Vol 12 (10) ◽  
pp. 1805-1807 ◽  
Author(s):  
John E. Storer
Keyword(s):  
British Columbia ◽  
Lower Cretaceous ◽  
Upper Cretaceous ◽  
Peace River ◽  
Dinosaur Tracks ◽  
Early Upper

Columbosauripus ungulatus Sternberg is identified from the Dunvegan Formation, Cenomanian (early Upper Cretaceous) of East Pine, northeastern British Columbia. The species was originally reported from the Gething Formation, Albian (late Lower Cretaceous) of Peace River canyon, British Columbia.

scholarly journals V.—Note on an Undescribed Area of Lower Greensand or Vectian in Dorset

1891 ◽  
Vol 8 (10) ◽  
pp. 456-458 ◽  
Author(s):  
A. J. Jukes-Browne
Keyword(s):  
Lower Cretaceous ◽  
Small Area ◽  
Upper Cretaceous ◽  
The Other ◽  
Present Communication ◽  
The Subject ◽  
Geological Magazine

Until recently no outcrop of the Vectian or Lower Greensand was known to occur between Lulworth on the coast of Dorset and the neighbourhood of Devizes in Wiltshire. It was supposed that, with the exception of a small area of Wealden in the Vale of Wardour, the whole of the Lower Cretaceous Series in Dorset and South Wilts was concealed and buried beneath the overlapping Upper Cretaceous strata. A recent examination of this district however has revealed two areas where the Vectian sands emerge from beneath the Gault. One of these has already been indicated in the pages of the Geological Magazine; the other is the subject of the present communication.

Holocene Prehistory of the Northwestern Subarctic

2016 ◽  
Author(s):  
Ben Potter
Keyword(s):  
British Columbia ◽  
Residential Mobility ◽  
Economic Change ◽  
Yukon Territory ◽  
Current Understanding ◽  
The Holocene ◽  
Cultural Transitions

This chapter synthesizes our current understanding of Holocene prehistory (from 11,500 years ago) of the northwest Subarctic, encompassing Alaska, Yukon Territory, and northern British Columbia. Various cultural chronologies are considered, as are new interpretations based on recently excavated sites. These data indicate conservation of lithic technologies concurrent with economic change throughout the region. Periods of cultural transitions occurred at 6,000 and 1,000 years ago. High residential mobility is inferred for most of the Holocene, with radical shifts in settlement and technology throughout the region at 1,000 years ago, though there are elements of continuity. Current debates on ethnogenesis of Athapaskans and the utility of typological approaches are also discussed.

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