Fossilised ripple marks. Cyclic and rhythmic aeolian stratification in a slab of sandstone. Small-scale,fossil ripple structures in a slab of sandstone. Here the ripple marks stand out clearly due to the varying grain size and the iron content of the very thin,wind-deposited layers. Specimen from the Jurassic Navajo formation,southern Utah state,USA | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5132 px × 3543 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |