scholarly journals Comment [on “Paleomagnetism of the Upper Cretaceous strata of Mount Tatlow: Evidence for 3000 km of northward displacement of the eastern Coast Belt, British Columbia” by P. J. Wynne et al., and on “Paleomagnetism of the Spences Bridge Group and northward

1996 ◽  
Vol 101 (B6) ◽  
pp. 13793-13799 ◽  
Author(s):  
J. W. H. Monger ◽  
R. A. Price
Keyword(s):  
British Columbia ◽  
Upper Cretaceous ◽  
Eastern Coast ◽  
Bridge Group

The conglomerate of Churn Creek: Late Cretaceous basin evolution along the Insular–Intermontane superterrane boundary, southern British Columbia

2001 ◽  
Vol 38 (1) ◽  
pp. 59-73
Author(s):  
J W Riesterer ◽  
J Brian Mahoney ◽  
Paul Karl Link
Keyword(s):  
British Columbia ◽  
Late Cretaceous ◽  
Upper Cretaceous ◽  
Volcanic Rocks ◽  
Clastic Rocks ◽  
South Central ◽  
Lower Member ◽  
Volcanic Source ◽  
Braided Stream ◽  
Bridge Group

Upper Cretaceous coarse clastic rocks exposed in the canyon of Churn Creek, south-central British Columbia, record active basin tectonism and coeval volcanism adjacent to the boundary between the Intermontane and Insular superterranes. Mid to late Albian (~104 Ma U–Pb), calc-alkaline andesite and basaltic andesite flows, with minor conglomerate and reworked epiclastic deposits and tuffs correlative with the Spences Bridge Group of the Intermontane superterrane are exposed in the canyon. In depositional contact above the volcanic rocks is the conglomerate of Churn Creek, which contains a thick (>1 km) sequence of complexly intertonguing conglomerate and sandstone that is divided into two members composed of four lithofacies. The lower member was deposited unconformably on the underlying Albian volcanic unit and contains late Albian–Cenomanian chert-pebble (>50% chert) conglomerate and interbedded chert- and volcanic-lithic sandstone. It is interpreted to have been deposited in a braided stream system flowing from southeast to northwest. The source for the chert was most likely the Bridge River terrane, a Mississippian to Jurassic ocean floor assemblage located to the southwest of Churn Creek, south of the Yalakom fault. Gradationally overlying the lower member throughout much of the basin is a mixed chert, plutonic, and volcaniclastic lithofacies of the upper member. Plutonic debris was provided to the mixed and plutonic lithofacies of the upper member by the Little Basin pluton, which was uplifted along the northeast-directed Little Basin thrust fault on the southwest margin of the basin. The upper member also contains a volcanic-rich lithofacies composed of chaotic volcanic conglomerate and local lithic tuff derived from a coeval proximal volcanic source. The conglomerate of Churn Creek records active northeast-vergent compressional tectonism and development of piggyback basins along the boundary between the Insular and Intermontane superterranes during Albian–Santonian time. The conglomerate of Churn Creek has been correlated to the Silverquick – Powell Creek succession of the Methow terrane, based on age, stratigraphic, lithologic, structural, geochemical, and paleomagnetic similarities, and may, therefore, represent an overlap assemblage linking the superterranes in the Late Cretaceous.

Magmatic evolution of the eastern Coast Plutonic Complex, Bella Coola region, west-central British Columbia

2009 ◽  
Vol 121 (9-10) ◽  
pp. 1362-1380 ◽  
Author(s):  
J. Brian Mahoney ◽  
Sarah M. Gordee ◽  
James W. Haggart ◽  
Richard M. Friedman ◽  
Larry J. Diakow ◽  
...  
Keyword(s):  
British Columbia ◽  
Eastern Coast ◽  
Magmatic Evolution ◽  
West Central ◽  
Plutonic Complex ◽  
Coast Plutonic Complex ◽  
Bella Coola

A new species of Petrolisthes STIMPSON, 1858 (Anomura, Porcellanidae) from the Upper Cretaceous (upper Santonian) of Vancouver Island, Canada

2020 ◽  
Vol 298 (1) ◽  
pp. 1-8
Author(s):  
Alessandro Garassino ◽  
Torrey Nyborg ◽  
John Fam ◽  
Dan Bowden ◽  
Raymond Graham ◽  
...  
Keyword(s):  
British Columbia ◽  
New Species ◽  
Upper Cretaceous ◽  
Vancouver Island ◽  
Geographical Range ◽  
Northeastern Pacific ◽  
A New Species

A new porcellanid crab, Petrolisthes landsendi Garassino & Nyborg n. sp., from the Upper Cretaceous (upper Santonian) Nanaimo Group of Vancouver Island (British Columbia, Canada) is herein described. Petrolisthes landsendi Garassino & Nyborg n. sp. represents the oldest species of Petrolisthes Stimpson, 1858 and is the first species from the northeastern Pacific, thus expanding the stratigraphical age and geographical range of the genus.

New Nassellaria (Radiolaria) from the Lower Jurassic of the Canadian Cordillera

1996 ◽  
Vol 33 (3) ◽  
pp. 444-451 ◽  
Author(s):  
Fabrice Cordey ◽  
Elizabeth S. Carter
Keyword(s):  
British Columbia ◽  
New Species ◽  
New Taxa ◽  
Lower Jurassic ◽  
Canadian Cordillera ◽  
New Genera ◽  
Queen Charlotte Islands ◽  
Carbonate Concretions ◽  
Bridge Group ◽  
Three New Species

New nassellarian radiolarians are described from the Insular and Intermontane belts of the Canadian Cordillera in British Columbia. Two new genera (Atalanta n.gen. and Nitrader n.gen.) and three new species (Atalanta emmela n.gen., n.sp., Atalanta epaphrodita n.gen., n.sp., and Nitrader montegufonensis n.gen., n.sp.) were found in Lower Jurassic carbonate concretions of the Sandilands Formation of the Queen Charlotte Islands and in a chert pebble extracted from a Cretaceous conglomerate of the Intermontane Belt possibly correlative with the Spences Bridge Group. The discovery of new taxa within two distinct belts of the Canadian Cordillera stresses their biostratigraphic significance.

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