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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. 5723

No. of sample: g5723
Rock: porfyr, magmatity žilné
Description: jeden kus
Localization: silnice Jáchymov-Suchá Opole, lom
Author: leg. N. Maas,1965
Comment: list Jáchymov 1:50000 žulový p. s přechody do syeniotového p.

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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]