Shelly limestone. Computer enhanced polarised light micrograph of a thin section of a nummulitic limestone.The objects are the remains of large foraminifera, Nummulites sp. These are embedded in a fine-grained matrix of calcareous remains of smaller, planktonic organisms. This type of rock is found in South Europe and North Africa, and was deposited during the eocene and oligocene epochs, 37-54 million years BP (before present). Horizontal object size of this section: 1.2 mm. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 5472 px × 3648 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |