This zone includes the Brunovistulian Block , an allochthonous unit thrusted over the Moravo - Silesian crystalline rocks .
The southeast of the massif forms a third unit , the Moravo - Silesian Zone .
This zone includes the Brunovistulian Block , an allochthonous unit thrusted over the Moravo - Silesian Zone     crystalline rocks .
The southeast of the massif forms a third unit , the Moravo - Silesian Zone .