MJavad Fadayi Posts - TopicsExpress

Gneiss is a very widespread rock type, especially in the lower
Gneiss is a very widespread rock type, especially in the lower parts of the continental crust but it is also a common rock on the surface in some plac...

Syenitic rocks are usually associated with other plutonic rocks.
Syenitic rocks are usually associated with other plutonic rocks. They form relatively small intrusive bodies or parts of larger intrusions. Most syeni...