Mud cracks are common in which type of sedimentary rocks?

Low grade schist is formed under what conditions?

Quartzite is formed from which rock?

High grade schist is formed under what conditions?

The non-clastic sedimentary rock chiefly made of carbonate of calcium is ________

Metasomatism occurs at which level and state?

The grade of coal with very low calorific value is ________

Type of false bedding where the individual layers exist in well-defined sets of parallel layers is ________