The highest grade of coal is ________

Identify the metamorphic rock formed by thermodynamic method of metamorphism.

The metamorphic rocks showing granulose structure is ______

Sills in length are restricted to hundreds of metres.

How is the degree of packing in welding related to load of overlying sediments?

Give an example for a rock with cataclastic structure.

Which among the following is not a use of shale?

The texture which the characteristics in between granitic and felsitic are __________