Nummulitic limestone. Polarised light micrograph of a thin section of a Nummulitic limestone. The large coloured 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). Magnification x10 at 6x7cm size. Magnification: x17 at 5x4 inch size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Pasieka, Alfred |
Taille de l’image : | 4168 px × 3299 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |