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GRAIN DISTRIBUTION CHARACTERISTICS (AGI CHART) |
International Space Station 400mm Photograph Image credit: Image Science and Analysis Laboratory, NASA Johnson Space Center |
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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TOP OF ARCADIA ROAD |
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0X IMAGE (BACKGROUND IMAGE) |
1X IMAGE |
1X IMAGE |
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CONSTRUCTION SITE |
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"During my early morning exercise on Arcadia Road on the slope of Camelback Mountain,I walk by a residential construction site. I watch the progress each day. Last week they dug a large trench in which they would place a conduit.This week they placed the conduit and filled the trench with a red sand. I have no idea where the sand comes from. It's about the reddest sand I have seen." Gary Foster |
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0X IMAGE |
1X IMAGE |
3X IMAGE |
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SAMPLE #3 |
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Gary Foster Photograph* |
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0X IMAGE |
1X IMAGE |
3X IMAGE |
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SAMPLE #4 |
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Gary Foster Photograph* |
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Click on Image for High Resolution Version |
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0X IMAGE |
1X IMAGE |
1X IMAGE |
| Click on Image for High Resolution Version |
Click on Image for High Resolution Version |
Click on Image for High Resolution Version |
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SAMPLE #5 |
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Gary Foster Photograph* |
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Click on Image for High Resolution Version |
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0X IMAGE |
1X IMAGE |
1X IMAGE |
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* PHOTOGRAPHS MAY NOT BE FROM COLLECTION SITES |
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ROCK SAMPLES |
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ROCK COLLECTION SITE - Gary Foster Photograph |
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GRANITE (3 CM ACROSS) |
BASALT (11 CM ACROSS) |
GRANITE (6 CM ACROSS) |
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BRECCIA (5 CM ACROSS) |
BRECCIA (8 CM ACROSS) |
SANDSTONE (2 CM ACROSS) |
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PETRIFIED WOOD |
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7 CM ACROSS |
9 CM ACROSS |
13 CM ACROSS |
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9 CM ACROSS (SIDE #1) |
9 CM ACROSS (SIDE #2) |
10 CM ACROSS |
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NORTH SIDE OF THE MOUNTAIN |
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NORTH SIDE COLLECTION SITE - Gary Foster Photograph |
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Click on Image for High Resolution Version |
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BASALT(?) (6 CM ACROSS) |
BASALT(?) WITH QUARTZ VEIN (4CM ACROSS) |
PINK GRANITE (10CM ACROSS) |
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PINK GRANITE (7 CM ACROSS) |
LIGHT GRANITE (7 CM ACROSS) |
BRECCIA (7 CM ACROSS) |
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Click on Image for High Resolution Version |
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SANDSTONE (3 CM ACROSS) |
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