Difference between revisions of "Shell composition"
| Line 3: | Line 3: | ||
* organic-walled | * organic-walled | ||
* [[agglutinated]] (cemented foreign particles/grains) | * [[agglutinated]] (cemented foreign particles/grains) | ||
| − | + | : - with organic cement | |
| − | + | : - with calcareous cement | |
* secreted calcium carbonate (calcite or aragonite) | * secreted calcium carbonate (calcite or aragonite) | ||
| − | + | : - microgranular | |
| − | + | : - porcellaneous | |
| − | + | : - hyaline | |
* secreted ???silica (very uncertain) | * secreted ???silica (very uncertain) | ||
