How might the collapse of the carboniferous rainforests have affected earth's carbon cycle?

The collapse of the Carboniferous forests have influenced the carbon cycle of the Earth in the following ways:  

1. The reduction of the Carboniferous rainforest would have declined the concentration of carbon in the Earth's carbon cycle.  

2. Again the concentration of the carbon in the carbon cycle of the Earth would have elevated as a consequence of the decay of the vegetation.  

3. The decaying vegetation was probably to minimize due to the captivation of the carbon dioxide from the atmosphere.  

4. These decaying vegetation could have converted or transformed into fossil fuels after getting buried underground.  

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.