Nummulitic limestone. Polarised light micrograph of a thin section of a nummulitic limestone found in Allicante,Spain. 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). Horizontal object size of this section: 6.0 mm | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Pasieka, Alfred |
Bildgröße: | 4781 px × 3655 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |