Erratic Block Kuncice - Kuncický bludný balvan EarthCache

Erratic blocks are boulders of different size or exotic blocks of rocks that do not occur in our country. The glacier imported them by continental glaciations during the middle Pleistocene approximately 250 to 800 thousand years ago.
The erratic block in Kuncice is made of a granite rock that is described as the gritty porphyry granite. The colour of the rock is yellowish grey-pink. The structure is porphyry with insets of pinkish or yellowish potassium feldspars that reach the size of 1 to 2 cm. In the basic gross grainy substance we can also find grey, yellowish milled flint called soda-lime feldspar and black biotite oblong huddle. There is also magnetite, apatite and sparsely epidote. The erratic block in Kuncice is situated at the streetcar terminus no. 9 in Ostrava-Kuncice if front of the south gate to Nová Hut. This erratic block comes from the middle of Sweden or the south of Finland. It’s proportions are 3,2 m x 2,5 m x 1,5 m and a capacity is 6,5 m³. The block was found under the ply of younger deposits in October 1954 during the digging of the ground of a big steel foundry in Nová Hut at the depth of 6,8 m. After some time it obtained a dignified location at the concrete easel. It is preserved since 1989 and has a statute of natural relief.

Conditions of acknowledgement of the log:

1. To take a snap of you with the GPS in front of the erratic block. 
2. To send us the weight of the erratic block in Kuncice.