Revisions to the stratigraphy and biochronology of the Upper Cretaceous Nanaimo Group, British Columbia and Washington State

1978 ◽  
Vol 15 (3) ◽  
pp. 405-423 ◽  
Author(s):  
Peter D. Ward
Keyword(s):  
British Columbia ◽  
Field Data ◽  
Upper Cretaceous ◽  
Vancouver Island ◽  
Washington State ◽  
Island Region ◽  
New Name ◽  
Local Range

The stratigraphy of the Upper Cretaceous Nanaimo Group of the Vancouver Island region is revised on the bases of new fossil and field data. Previously unrecognized turbidite facies of the Haslam Formation are proposed as the new Cowichan Member of the Haslam Formation. This member either overlies or intertongues with the new Haslam Creek Member of the Haslam Formation. The Extension–Protection Formation is subdivided into three formations: the lower Extension Formation, the middle Pender Formation (new name) and the upper Protection Formation.The macrofossil zonal succession can be revised to include a new local-range zone superjacent to the Schmidti Zone and subjacent to the Vancouverense Zone named the Chicoensis Zone, based on the Nanaimo Group occurrences of Baculites chicoensis Trask and Submortoniceras chicoense (Trask). Another new zone is proposed superjacent to the Vancouverense Zone and subjacent to the Suciaensis Zone, named the Paciflcum Zone. This latter zone is based on the local Nanaimo Group ranges of Metaplacenticeras cf. M. pacificum (Smith) and Baculites rex Anderson.

Southern Wakashan: Descriptive and Theoretical Perspectives

2007 ◽  
Vol 52 (1-2) ◽  
pp. 1-18
Author(s):  
Henry Davis ◽  
Rachel Wojdak
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Washington State ◽  
Linguistic Theory ◽  
Special Volume ◽  
Theoretical Perspectives ◽  
Foundational Work ◽  
Edward Sapir

This special volume of CJL/RCL is the first collection of papers devoted specifically to the Southern Wakashan languages Makah, Ditidaht (also known as Nitinat), and Nuu-chah-nulth (also known as Nootka). These three closely related languages form a continuum stretching from the northwest tip of Washington State to northwest Vancouver Island in British Columbia. The Southern Wakashan languages are remarkable for the typologically unusual traits they exhibit in virtually all areas of their grammars. These properties were first illuminated by Edward Sapir in his foundational work on Nuu-chah-nulth (1911, 1915, 1921; Sapir and Swadesh 1939), which helped thrust Wakashan to the forefront of early Amerindian scholarship. The papers brought together in this volume reflect a recent resurgence of interest in Southern Wakashan, and highlight the potential of lesser-studied languages to contribute to linguistic theory, as well as the range of insights that theoretically informed perspectives can bring to the grammatical description of these languages.

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.

Optical dating studies of Quaternary organic-rich sediments from southwestern British Columbia and northwestern Washington State

1995 ◽  
Vol 32 (8) ◽  
pp. 1194-1207 ◽  
Author(s):  
Olav B. Lian ◽  
Jinsheng Hu ◽  
D. J. Huntley ◽  
Stephen R. Hicock
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
Washington State ◽  
Optical Dating ◽  
Thermoluminescence Dating ◽  
Lithostratigraphic Units ◽  
Dating Method ◽  
Infrared Excitation ◽  
Future Work

The suitability of optical dating using 1.4 eV (infrared) excitation for determining the time of deposition, or compaction, of organic-rich sediments and peat is assessed with measurements on seven samples from six different lithostratigraphic units. One is of zero age, two have associated 14C ages, three are known to have been deposited during an interglaciation, and one is ~1 Ma old. The samples yield satisfactory optical ages ranging from 0 to over 100 ka. We conclude that the Muir Point Formation (southern Vancouver Island) and the Whidbey Formation (northwestern Washington State) were both deposited during δ18O stage 5, as previously deduced from other evidence. The age obtained from the ~1 Ma sample was significantly too low. The optical dating method is simpler and more precise than thermoluminescence dating, and is recommended for future work.

Paleomagnetism of the Upper Cretaceous Nanaimo Group, southwestern Canadian Cordillera

2001 ◽  
Vol 38 (10) ◽  
pp. 1403-1422 ◽  
Author(s):  
Randolph J Enkin ◽  
Judith Baker ◽  
Peter S Mustard
Keyword(s):  
British Columbia ◽  
North America ◽  
Upper Cretaceous ◽  
Vertical Axis ◽  
Vancouver Island ◽  
Canadian Cordillera ◽  
Paleontological Data ◽  
The Mean ◽  
Prime Target

The Baja B.C. model has the Insular Superterrane and related entities of the Canadian Cordillera subject to >3000 km of northward displacement with respect to cratonic North America from ~90 to ~50 Ma. The Upper Cretaceous Nanaimo Group (on and about Vancouver Island, British Columbia) is a prime target to test the model paleomagnetically because of its locality and age. We have widely sampled the basin (67 sites from seven islands spread over 150 km, Santonian to Maastrichtian age). Most samples have low unblocking temperatures (<450°C) and coercivities (~10 mT) and strong present-field contamination, forcing us to reject three quarters of the collection. Beds are insufficiently tilted to provide a conclusive fold test, and we see evidence of relative vertical axis rotations. However, inclination-only analysis indicates pretilting remanence is preserved for many samples. Both polarities are observed, and reversals correlate well to paleontological data, proving that primary remanence is observed. The mean inclination, 55 ± 3°, is 13 ± 4° steeper than previously published results. Our new paleolatitude, 35.7 ± 2.6° is identical to that determined from the slightly older Silverquick and Powell Creek formations at Mount Tatlow, yet the inferred displacement is smaller (2300 ± 400 km versus 3000 ± 500 km) because North America was drifting southward starting around 90 Ma. The interpreted paleolatitude conflicts with sedimentologic and paleontologic evidence that the Nanaimo Basin was deposited near its present northern position.

Cascadiacarpa exilis sp. nov.: new fruits of Fagaceae from the Eocene of British Columbia

Botany ◽  
2014 ◽  
Vol 92 (5) ◽  
pp. 377-387 ◽  
Author(s):  
Randal A. Mindell ◽  
Ruth A. Stockey ◽  
Graham Beard
Keyword(s):  
British Columbia ◽  
North America ◽  
Cellulose Acetate ◽  
Transverse Section ◽  
Vancouver Island ◽  
Washington State ◽  
Western North America ◽  
Single Seed ◽  
Fossil Genus ◽  
Shape And Size

More than 800 permineralized fagaceous fruits have been studied from the Eocene Appian Way locality of Vancouver Island, British Columbia. These cupulate nuts are the most common fruits preserved at the locality. They occur in calcareous concretions and were studied using the cellulose acetate peel technique. Cupules are borne on a spiny stalk and are broadly ovate in both longitudinal and transverse section. Cupules are evalvate and have both branching and simple spines. A single, ovoid, sclerotic nut is enclosed entirely by the cupule, except at the apex, where a stylar protrusion is free from any surrounding tissues. The nut is bilocular with a glabrous endocarp lining. At maturity, a single seed occupies the locular cavity. The embryo is straight and no endosperm is evident. The single-fruited, spiny cupule is most similar to fruits of Fagaceae subfamily Castaneoideae. Bicarpellate fruits and a glabrous endocarp place them within the fossil genus Cascadiacarpa; however, they differ from Cascadiacarpa spinosa in nut wall anatomy, cupule ornamentation, shape, and size. Fruits of Cascadiacarpa exilis sp. nov. are compared with spiny, small compression and impression fossil fruits from the Eocene Taneum Creek locality of Washington State. The characters of the Washington State fossils overlap with those observed in the anatomically preserved Appian Way cupulate fruits and, as such, may represent compression and impression fossils of the same genus. The permineralized fruits document that evalvate, spiny, cupulate nuts of Fagaceae were present and common in the Eocene of western North America.

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