The igneous rock will be weathered and formed into a sedimentary rock
Physcial weathering <span>is the process that breaks rocks apart. So, I suppose when an earthworms digs and tunnels their way through the soil? They move the broken peices of rock causing it to break into smaller peices.</span>
The younger rock would be black and have like no stains and it would not be as dirty as the older rock hope this helps!!1