BEETLES OF THE GENUS DONACIA FROM THE PLEISTOCENE OF VANCOUVER ISLAND, BRITISH COLUMBIA:

1927 ◽  
Vol 59 (12) ◽  
pp. 303-304 ◽  
Author(s):  
T. D. A. Cockerell
Keyword(s):  
British Columbia ◽  
Vancouver Island ◽  
The South ◽  
Plant Remains ◽  
Sand And Gravel

I am indebted to the Rev. Robert Connell for some very interesting Coleopterous remains in black lignite from the south end of Cordova Bay, Victoria. The deposit is overlain by about 180 feet of clay, sand, and gravel, the Cordova sands and gravels and Maywood clays constituting the Puyallup interglacial deposits, with Vashon drift above. Of the Puyallup deposits the Maywood clays are the older, and in them is the lignite bed with marine shells in the overlying clay and finely stratified whitish clay underlying it. The lignite contains pieces of wood, seeds, and other plant remains.

The Lions Gate Member: A New Late Cretaceous Sedimentary Subdivision in the Vancouver Area of British Columbia

1975 ◽  
Vol 12 (3) ◽  
pp. 464-471 ◽  
Author(s):  
G. E. Rouse ◽  
W. H. Mathews ◽  
R. H. Blunden
Keyword(s):  
British Columbia ◽  
Late Cretaceous ◽  
Vancouver Island ◽  
Granitic Rocks ◽  
The South ◽  
Plutonic Belt ◽  
South Shore

Sediments bordering Burrard Inlet in Greater Vancouver are described as the Lions Gate Member of the Burrard Formation. This new member, comprising the lowest part of the previously defined Burrard Formation, rests nonconformably upon deeply weathered granitic rocks of the Coast Plutonic belt, and dips southwards into the Whatcom Basin. Four sedimentary units are recognizable, comprising a basal unit of conglomerate with minor sandstone lenticles; a sandstone–siltstone unit; a shale unit; and an upper coarse arkose. The upper contact with overlying sandstone and shales of Tertiary age occurs on the south shore of Burrard Inlet. Palynomorphs from both surface and borehole samples are of Late Cretaceous (Campanian) age, suggesting correlation of the Lions Gate Member with the Extension-Protection Formation of eastern Vancouver Island.

Two major Wisconsin lithostratigraphic units in southwest British Columbia

1977 ◽  
Vol 14 (7) ◽  
pp. 1471-1480 ◽  
Author(s):  
J. E. Armstrong ◽  
J. J. Clague
Keyword(s):  
British Columbia ◽  
The South ◽  
Glacial Sediments ◽  
The North ◽  
Lithostratigraphic Units ◽  
Head Formation ◽  
Sand And Gravel ◽  
Part Plant ◽  
North End

Two lithostratigraphic units, Quadra Sand and the Cowichan Head Formation, are overlain by Vashon till and associated glacial sediments and underlain by Dashwood and Semiahmoo drift deposits in coastal southwest British Columbia. Each unit is formally described and stratotypes are presented.Quadra Sand consists of cross-stratified, well-sorted sand, minor gravel, and silt deposited as outwash in front of glaciers advancing into the Georgia Depression at the beginning of the Fraser Glaciation. It is diachronous, deposition having commenced earlier than 29 000 years BP at the north end of the Georgia Depression but not until after 15 000 years BP at the south end of the Puget Lowland.The Cowichan Head Formation, deposited during the Olympia nonglacial interval, underlies Quadra Sand and consists of parallel-bedded silt, sand, and gravel, in part plant-bearing. The unit is divisible into a lower marine member and an upper fluvial and estuarine member.

scholarly journals Calcite-Mineralized Fossil Wood from Vancouver Island, British Columbia, Canada

Geosciences ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 38
Author(s):  
George E. Mustoe ◽  
Graham Beard
Keyword(s):  
British Columbia ◽  
Early Cretaceous ◽  
Sedimentary Rocks ◽  
Outer Zone ◽  
Vancouver Island ◽  
Geochemical Conditions ◽  
Plant Remains ◽  
Calcite Cement ◽  
Inner Region ◽  
Marine Basin

Calcite-mineralized wood occurs in marine sedimentary rocks on Vancouver Island, British Columbia at sites that range in age from Early Cretaceous to Paleocene. These fossil woods commonly have excellent anatomical preservation that resulted from a permineralization process where calcite infiltrated buried wood under relatively gentle geochemical conditions. Wood specimens typically occur in calcareous concretions in feldspathic clastic sediment. Other concretions in the same outcrops that contain abundant mollusk and crustacea fossils are evidence that plant remains were fluvially transported into a marine basin. Fossiliferous concretions commonly show zoning, comprising an inner region of progressive precipitation where calcite cement developed as a concentric halo around the organic nucleus. An outer zone was produced by pervasive cementation, which was produced when calcite was simultaneously precipitated in pore spaces over the entire zone.

The plainfin midshipman’s soundscape at two sites around Vancouver Island, British Columbia

2018 ◽  
Vol 603 ◽  
pp. 189-200 ◽  
Author(s):  
WD Halliday ◽  
MK Pine ◽  
APH Bose ◽  
S Balshine ◽  
F Juanes
Keyword(s):  
British Columbia ◽  
Vancouver Island

THE CLAY MINERALS IN SOME BRITISH COLUMBIA SUBSOILS

1962 ◽  
Vol 42 (2) ◽  
pp. 296-301 ◽  
Author(s):  
J. S. Clark ◽  
J. E. Brydon ◽  
H. J. Hortie
Keyword(s):  
British Columbia ◽  
Diffraction Analysis ◽  
Clay Minerals ◽  
Clay Mineralogy ◽  
X Ray Diffraction ◽  
The South ◽  
Parent Materials ◽  
X Ray ◽  
Northeastern Part ◽  
Montmorillonitic Clay

X-ray diffraction analysis was used to identify the clay minerals present in fourteen subsoil samples that were selected to represent some more important clay-bearing deposits in British Columbia. The clay mineralogy of the subsoils varied considerably but montmorillonitic clay minerals tended to predominate in the water-laid deposits of the south and illite in the soil parent materials of the Interior Plains region of the northeastern part of the Province.

Bridge River tephra: revised distribution and significance for detecting old carbon errors in radiocarbon dates of limnic sediments in southern British Columbia

1980 ◽  
Vol 17 (11) ◽  
pp. 1454-1461 ◽  
Author(s):  
Rolf W. Mathewes ◽  
John A. Westgate
Keyword(s):  
British Columbia ◽  
Sedimentary Rocks ◽  
Lacustrine Sediments ◽  
Igneous Rocks ◽  
The South ◽  
Radiocarbon Dates ◽  
Carbon Contamination ◽  
Horseshoe Lake ◽  
Tephra Beds

Ash-grade Bridge River tephra, identified as such on the basis of shard habit, modal mineralogy, and composition of ilmenite, occurs in sedimentary cores from three lakes located to the south of the previously documented plume and necessitates a significant enlargement of the fallout area of that tephra in southwestern British Columbia.These new, more southerly occurrences are probably equivalent to the ~2350 year old Bridge River tephra, although it can be argued from the evidence at hand that the 14C dates and biotite-rich nature support relationship to a slightly earlier Bridge River event.Large differences exist in the 14C age of sediments immediately adjacent to the Bridge River tephra at these three lake sites; maximum ages of 3950 ± 170 years BP (GX-5549) and 3750 ± 210 years BP (I-10041) were obtained at Phair and Fishblue lakes, respectively, whereas the corresponding age at Horseshoe Lake is only 2685 ± 180 years BP (GX-5757). The two older dates are considered to be significantly affected by old carbon contamination for the bedrock locally consists of calcareous sedimentary rocks and the lacustrine sediments are very calcareous. The 14C date from Horseshoe Lake, which occurs in an area of igneous rocks, appears to be only slightly too old relative to the ~2350 year old Bridge River tephra.Well-dated tephra beds, therefore, can be very useful in assessing the magnitude of old carbon errors associated with radiocarbon dates based on limnic sediments. Calcareous gyttja deposits beneath Bridge River tephra within the study area exhibit old carbon errors of the order of 1350–1550 years.

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