Lab 1 Roundness and Sphericity
In this lab you will determine the roundness and sphericity of a number of sedimentary particles and will investigate the relationship between these two properties of particles.
RoundnessRoundness refers to the sharpness of the corners and edges of a grain.
Angular
Sub-rounded
Well-rounded
To determine the roundness of our grains we will estimate by a visual comparison to grains of known roundness.
SphericitySphericity measures the degree to which a particle approaches a spherical shape. It will be determined for our grains by measuring the three linear dimensions (longest(L), Intermediate (I) & Shortest (S) diameters).
Sphericity Measurements
Review . . .
Measurement = 1.28
How do you use the calipers?
