hand holding a raw specimen of pink shale sedimentary rock stone

accumulate addition alteration background brown carbon changing clastic close-up combination commonly components conditions conglomerate consisting contrast crust crystal crystallizes decoration deposits diorite earth earth's earth’s environmental essentially formed garden geology granite gray hand holding hot igneous important inside isolated limestone macro magma manganese material mechanical melted mineral mineral-rich mining molten natural nature object once-living ore organisms outdoor piece pieces pink pre-existing preexisting pressure raw response result rock sedimentary shale specimen stone stress subjected subtraction surface temperature texture variations volcanoes white