Yes. Exactly, they do have both, fine grained and coarse grained rocks.
Fine grained has larger crystals and coarse grained has smaller crystals
shale is fine grained
Coarse
Granite - coarse grained. Basalt - fine grained.
Fine grained
Metamorphic rock can be coarse grained or fine grained.
A peridotite is a dense, coarse-grained igneous rock
If the rocks are igneous then in general:- Coarse = slowly. Fine = fast. However if the rocks are metamorphic or sedimentary then grain size has nothing to do with cooling and indicates other things.
Metamorphic rock can be coarse grained or fine grained.
*fine-grained *coarse-grained
fine grained rock will weaher faster thatn the course grained rock
Methods of formation. If crystalline (igneous or metamorphic) they would most likely have had differing rates of cooling. If sedimentary, they would most likely have had differing depositional environments (higher energy for larger grain sizes).
Fine grained rock exhibits a non-visible or nearly non-visible crystalline structure on a fractured surface. On the opposite end, a coarse grained rock exhibits mineral crystals of the rock's constituents on a fractured surface. The larger the crystals, the coarser grained is the rock. Basalt would be an example of a fine grained rock. Granite would be an example of a coarse grained rock.
coarse grained
tat is very large grain .. its not having a fine texture..
Fine grained has larger crystals and coarse grained has smaller crystals
Fine grained has larger crystals and coarse grained has smaller crystals