As short-lived as a blade of grass... And yet this common comparison does not always turn out to be true. In the collection of Małopolska’s Virtual Museums you can see blades of grass that have survived over 5 million years! Frozen in a halite crystals, they are like jewels in a transparent frame. Although the green hue has lost its vibrancy...
Sandstone with mudstone intercalations and marl with marly limestone deposited first in shallow then in a deeper basin in the Triassic. A carbonate complex, build mainly of limestone and partly of dolomite developed in the Middle Triassic.
At the end of the Triassic and beginning of the Jurassic carbonate formations were being destroyed and removed from the land. The Middle Jurassic sea entered into the vicinity of Kraków in the Upper Bathonian and lasted till the Kimmeridgian.
Crinoids are one of the classes of animals that make up the phylum Echinodermata, which includes about 700 species of marine invertebrates, mainly found in deep waters. Their body resembles a goblet; they have five or more feathery arms, edged with feathery processes which contain their reproductive organs. There are also numerous tube feet placed on them, which perform a sensory function. The arms of the crinoids are equipped with so-called gutters, with tiny, hairy cell processes – the cilia – transporting food to the mouth. Their very characteristic internal skeleton makes thousands of extinct species extremely important Palaeozoic index fossils.
One of the legends of the town of Olkusz, passed down by generations, tells the story of the silver mines, to which the town owed its prosperity. One day, the devil decided to fill up the excavations that were so valuable for the inhabitants of the region.
Salt exploitation history is connected in Poland, with the Miocen marine deposits filling the Pre-Carpathian basin. The salt series thickness varies from 250 m in Wieliczka up to 1500 m close to Wojnicz. It is built of five cyclothems, that is sedimentation cycles, beginning from aggregated and argillaceous rocks (sandstones, mudstones, claystone), argillo-calcerous and anhydrite claystone to anhydrites and halites.