Led by Michael Church and Jon Tunnicliffe
Wednesday, June 30, 2004
Chilliwack Valley is a 1200 km2 drainage basin in the glaciated northernmost Cascade Mountains about 100 km east of Vancouver. The upper basin drains via Chilliwack Lake. Modern land use includes forestry and mixed institutional uses. We have selected this valley in order to study the regional geomorphological history of the Holocene Epoch and to examine the problems of establishing long term sediment budgets in drainage basins substantially larger than most experimental or “representative” basins. We are using mineral tracing, sediment texture trends, seismic methods and evidence of morphological evolution to establish the history of sediment transfers. The field trip will demonstrate the landscape and landforms of the valley and generate discussion of some of our results and problems.
Photos
Itinerary
| 8:00 a.m. | Depart by bus from the northwest entrance of the Geography Building |
| 9:30 a.m. | Arrive Chilliwack Valley |
| 9:45 a.m. | Quaternary deposits: Slesse/Chilliwack confluence |
| 10:45 a.m. | Contemporary mass wasting: Pierce Creek debris flow |
| 11:30 a.m. | Rock slides; tributary channel sedimentation: Foley Creek |
| 12:30 p.m. | Lunch (provided) |
| 1:30 p.m. | Chilliwack River sedimentation |
| 2:30 p.m. | Chilliwack/Vedder river fan: end-point sedimentation |
| 3:30 p.m. | Vedder “canal” (optional if time permits) |
| 4:00 p.m. | Depart for Vancouver |
| 5:30 to 6 p.m. | Arrival at UBC campus (Geography Building) |