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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. 3864

No. of sample: g3864
Rock: aplit, magmatity žilné
Description: jeden kus
Localization: Cínovec, vrt PC-4, hloubka 42m
Author: leg.Štemprok,1957
Comment: albititové šmouhy ve středně zrnité žule ve tvaru trubky s různě ostrou hranicí se sousední horninou.

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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]