+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Late Pliocene proboscideans and early Fraser glacial sedimentation in eastern Fraser Lowland, British Columbia



Late Pliocene proboscideans and early Fraser glacial sedimentation in eastern Fraser Lowland, British Columbia



Canadian Journal of Earth Sciences 195: 899-906



Three recently radiocarbon-dated tusk segments from eastern Fraser Lowland indicate Pleistocene proboscideans (probably mammoths) lived there between 22,700-21,400 yr ago during the early Fraser (for the Fraser Lowland) ice advance into the area. Palynomorphs from silty sand adhering to a tusk indicate the animals grazed on open grassy floodplain. Sedimentologic and altimeter studies of tusk-bearing gravel indicate an early Fraser sandur, at least 10 km long and deposited at the same time as Coquitlam Drift, formed in Chilliwack Valley at the same time that a sandur or kame terrace was deposited against the north side of Promontory ridge. Probably .apprx. 21,000 yr ago (the time of Coquitlam glacial maximum in western Fraser Lowland) ice blocked Chilliwack Valley, creating a glacial lake whose freshwater, Pediastrum-bearing, laminated silt has been observed up to 200 m asl above sea level . Stratigraphy and history of the area following deposition of the gravels and silt are still uncertain without more chronologic control. Proboscideans could have migrated southward and westward, away from ice advancing into Fraser Lowland, across ancestral Strait of Georgia via the Quadra sandur and onto southeastern Vancouver Island to which earliest Fraser glacial ice probably advanced after 17,000 yr B.P.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 021264229

Download citation: RISBibTeXText


Related references

Late Pleistocene proboscideans and early Fraser glacial sedimentation in eastern Fraser Lowland, British Columbia. Canadian Journal of Earth Sciences 19(5): 899-906, 1982

Coquitlam drift; a pre-Vashon Fraser glacial formation in the Fraser Lowland, British Columbia. Canadian Journal of Earth Sciences = Journal Canadien des Sciences de la Terre 18(9): 1443-1451, 1981

Lag of the Fraser glacial maximum in the Pacific Northwest; pollen and macrofossil evidence from western Fraser Lowland, British Columbia. Canadian Journal of Earth Sciences = Journal Canadien des Sciences de la Terre 19(12): 2288-2296, 1982

Implications of a late-glacial pollen record for the glacial and climatic history of the Fraser Lowland, British Columbia. Palaeogeography, Palaeoclimatology, Palaeoecology 180(1-3): 147-157, 2002

Implications of a late-glacial pollen record for the glacial and climatic history of the Fraser Lowland, British Columbia; discussion. Palaeogeography, Palaeoclimatology, Palaeoecology 203(3-4): 337-342, 2004

Implications of a late-glacial pollen record for the glacial and climatic history of the Fraser Lowland, British Columbia; reply. Palaeogeography, Palaeoclimatology, Palaeoecology 203(3-4): 343-346, 2004

Reply to comments on Implications of a late-glacial pollen record for the glacial and climatic history of the Fraser Lowland, British Columbia. Palaeogeography Palaeoclimatology Palaeoecology 203(3-4): 343-346, 15 February, 2004

Comments on Implications of a late-glacial pollen record for the glacial and climatic history of the Fraser Lowland, British Columbia by Pellatt et al, 2002. Palaeogeography Palaeoclimatology Palaeoecology 203(3-4): 337-342, 15 February, 2004

Pollen and macrofossil evidence for a late Wisconsin glacial lag in the Pacific Northwest, from western Fraser Lowland, British Columbia. Program and Abstracts - American Quaternary Association Conference, 1982

Pre vashon fossil coleoptera of fraser age from the fraser lowland british columbia canada. Canadian Journal of Earth Sciences 22(4): 498-505, 1985

Implications of the Mike Lake pollen record for the glacial and climatic history of the Fraser Lowland, British Columbia. Abstract Volume (Geological Association of Canada) 25: (unpaginated, 2000

Late glacial lakes of the Fraser glaciation, central British Columbia. Program with Abstracts Geological Association of Canada; Mineralogical Association of Canada; Canadian Geophysical Union, Joint Annual Meeting: 120, 1997

Ice flow and late glacial lakes of the Fraser Glaciation, central British Columbia. Current Research - Geological Survey of Canada Pages 133-143, 1997

Late Quaternary geology of the Fraser Lowland, southwestern British Columbia; Field trip 15. Pages 151-15, 1985

Late Pleistocene ice-proximal glaciomarine subaerial delta and submarine outwash fan lithofacies, Fraser Lowland, British Columbia, Canada. AAPG Bulletin 68(4): 477-478, 1984