JEROME, ARIZONA

JEROME, ARIZONA - Gary Foster Photograph

GRAIN DISTRIBUTION CHARACTERISTICS (AGI CHART)

GRAIN SHAPE CHARACTERISTICS

(PREPARED BY GAMMA ZETA CHAPTER , SIGMA GAMMA EPSILON, KENT STATE UNIVERSITY - AGI CHART))

Roundness is the degree of smoothing due to abrasion of sedimentary particles. It is expressed as the ratio of the average radius of curvature of the edges or corners to the radius of curvature of the maximum inscribed sphere.

The sphericity of a particle is: the ratio of the surface area of a sphere (with the same volume as the given particle) to the surface area of the particle.

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ABANDONED PILE

Gary Foster Photograph

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UNIQUE SAMPLE

Gary Foster Photograph

I was trulyhumbled by this "sand" sample. Most of the particles are much bigger than a real sand grain. Each grain was a work of art! The two pebbles shown to the left and right here were truly unique. The sample to the left is 4 cm across at its widest point. The sample to the right is 3.5 cm across at its widest point. I did my best to show them at their very best.

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