Volcanics and volcanisedimentary rocks

The volcanics (extrusive or effusive magmatic rocks) resulted from volcanic action on or near the Earth´s surface, either as lava flows or as volcanic explosion (volcanic ash, lapilli, bombs). The products can be retransported to considerable distance. Volcanisedimentary rocks consist of a mixture of volcanic products and sediments. These two compouds can be mixed or deposited in alternating layers. Tuffite is a good example.

List of exhibits

keratofyr, jeden kus g9329
diabas intruzivní, jeden kus g9339
tuf keratofyrový, jeden kus g9340
keratofyr masivní, jeden kus g9341
tuf keratofyrový, jeden kus g9319
diabas afanitický, jeden kus g9320
tufit ryolitový s congeria sp., jeden kus g9662
andesit, jeden kus g9842
ortorula stébelnatá, jeden kus g11925
olivinitický nefelinit, jeden kus g69
melafyr, jeden kus g1509

First Previous	Last
1 2 3 4 5 6 7 8

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