scholarly journals Geophysical data collected on the Continental margin midway between Washington State and Vancouver Island, B.C., along Line 19, USGS R/V S.P. Lee, Cruise 3-76

1981 ◽  
Author(s):  
Parke Detweiler Snavely
Keyword(s):  
Continental Margin ◽  
Vancouver Island ◽  
Washington State ◽  
Geophysical Data

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 Review of Geophysical Studies in the Canadian Cordillera

1971 ◽  
Vol 8 (7) ◽  
pp. 788-801 ◽  
Author(s):  
M. J. Berry ◽  
W. R. Jacoby ◽  
E. R. Niblett ◽  
R. A. Stacey
Keyword(s):  
British Columbia ◽  
Heat Flow ◽  
Rocky Mountain ◽  
The United States ◽  
Vancouver Island ◽  
Geophysical Data ◽  
Fault System ◽  
Canadian Cordillera ◽  
Crust And Upper Mantle ◽  
Juan De Fuca

Geophysical studies of the crust and upper mantle have been conducted in the Canadian Cordillera for over two decades, but only recently have sufficient data been collected to permit a synthesis and a correlation with the major geological units. The studies have included gravity, heat flow, and magnetotelluric observations, geomagnetic depth sounding, and high level aeromagnetics as well as both small and large scale refraction and reflection seismic surveys.It now appears that major crustal units may be recognized geophysically:(i) Seismic and gravity data suggest that the Plains and Rocky Mountains are underlain by two units of the North American craton with a crustal section 45–50 km thick. The northern unit appears to terminate at the Rocky Mountain Trench while the southern unit may extend to the Omineca Geanticline.(ii) The combined geological and geophysical data suggest that the Rocky Mountain Trench and possibly the Kootenay Arc near the 49th parallel mark the edge of the Precambrian continental margin and that the western Cordillera was formed by a complex succession of plate interactions with repeated reactivation of block boundaries.(iii) A combination of magnetic and heat flow data suggest that the region between the Rocky Mountain Trench and the Fraser Lineament is part of the Cordilleran Thermal Anomaly Zone recognized by Blackwell in the United States.(iv) Seismic data in Central British Columbia suggest that the Pinchi Fault system is a boundary between two crustal blocks.(v) The crustal thickness of the Coast Geanticline appears to increase gradually to the west to approximately 40 km and, at least in southern British Columbia, does not have a root zone below the mountains.(vi) The crustal section beneath Vancouver Island is abnormally thick and there is some paleomagnetic data which suggest that the Island may not have been formed in its present position, contiguous to the Cordillera. The crustal section for the northern part of the Insular Trough is significantly thinner.(vii) The active spreading of the Juan de Fuca Rise – Explorer Trench is now well documented. The geophysical data suggest active subduction of the Juan de Fuca plate beneath Oregon, Washing-ton, and southern Vancouver Island. However, further north there is no evidence for subduction.

scholarly journals Seasonal current simulations for the western continental margin of Vancouver Island

2000 ◽  
Vol 105 (C8) ◽  
pp. 19665-19698 ◽  
Author(s):  
M. G. G. Foreman ◽  
R. E. Thomson ◽  
C. L. Smith
Keyword(s):  
Continental Margin ◽  
Vancouver Island

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.

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