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Hypabyssal magmatites

      The hypabyssal magmatites resulted by magma penetration into fissure or fracture zones (dikes) or into discontinuities along bedding planes (sills). They are often bound to the plutonite bodies and their surroundings. They sometimes occur in groups, so called dike swarms, which might be as much as several dozens of kilometres long (their composition correponds mostly to basic basaltoids).


Exhibition detail no. 6251

No. of sample: g6251
Rock: porfyr, magmatity žilné
Description: jeden kus
Localization: Mladějovice, 530m jz. od kaple
Author: leg.Pešek,1966
Comment: moldanubický pluton, list 1:50000 Písek, porfyrický, amfibolicko-biotitický granodioritový p. /db.328/

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Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]