Geology Field Trip Report

Introduction:

Point Grey is a large beach and cliff completely created by natural elements such as the ocean, rainfall and the sunlight. Most of the beach is made up of sand, silt, and pebbles. The sand that is seen as Point Grey comes from two different sources: the North Arm of the Frasier River, and from the erosion of the sea cliffs below the University of British Columbia. (Vancouver Geology, Dr. Armstrong, p.73) With all the erosion that takes place at the base of the cliff, this causes a major natural hazard especially when it’s taking place in such a populated area. The cliffs are made up of cross-sections of silty clay at the base, sand in the middle both covered by glacial till, which is technically 12 000-year-old beach gravel. The sand is easily eroded because it was deposited in front of advancing glaciers around 20 000 years ago. These sands are called glaciomarine sands because of the large glacier that covered the entire lowland during the Fraser glaciat...