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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. 8225

No. of sample: g8225
Rock: porfyr, magmatity žilné
Description: jeden kus
Localization: Prádlo /o. Plzen - jih/, SV obce, zářez nové silnice JZ k. 510 /140m od konce z.
Author: leg. Fiala,1962
Comment: Proterozoikum - spilitový vulkanismus, výbrus 3441-I

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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]