File:1.2-1LithoCut0 (cropped).jpg
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1.2-1LithoCut0_(cropped).jpg (800 × 496 pixels, file size: 138 KB, MIME type: image/jpeg)
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Summary
| Description |
English: A selection displaying lithophysae features.
1, 2. Displaying typical plates and "sutures". 3, 4. A cluster with a lucky cut revealing all three original spheroid centers. Note oposing opening direrction on the smallest at bottom left. 5, 6. Two halves showing the slow fill structure layers with a large opal layer at the bottom. Note the expansion enlarged the egg toward the surface where there was the least pressure. Expansion is also controlled by where the water was located in the structure. 7. This lucky cut revealed the "dimple" and "pimple" where the expansion began on an inner shell. I've added red arrows showing where they originally connected. 8. Another lucky cut. Here the expansion was off to one side. - In contrast to 5 & 6, this one filled with "Fortification agate," from the shell, layer by layer, toward the center |
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| Date | ||||
| Source | Own work | |||
| Author | DaveC1 | |||
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:40, 19 May 2023 | | 800 × 496 (138 KB) | Belbury | File:1.2-1LithoCut0.jpg cropped 38 % vertically using CropTool with lossless mode. |
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