Date of Award

2012

Publication Type

Master Thesis

Degree Name

M.A.Sc.

Department

Geology

First Advisor

Cioppa, Maria (Earth Sciences)

Keywords

Geology.

Rights

info:eu-repo/semantics/openAccess

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Abstract

A study was conducted along the coast of Point Pelee National Park in northern Lake Erie to address uncertainties over the sediment transport of fine magnetic minerals (< 250 micrometres) in the swash zone. Magnetic tracers (magnetite) were tracked with a magnetic susceptibility meter, and for comparative purposes, fluorescent tracers were also used to track the movement of two sizes (< 250 micrometres and > 250 micrometres) of non-magnetic grains (quartz and calcite). Despite higher threshold shear stresses and settling velocities than for the coarse non-magnetic tracers, movement of the magnetic tracers was much slower and less prolonged, with the magnetic tracers eventually being buried and deposited into the upper foreshore. The results suggest, under low to moderate wave energy conditions, magnetic grains remain below the surface in the swash zone and do not contribute to the net sediment transport, and only move during high energy wave conditions.

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