Pipe rock | Article about pipe rock by The Free Dictionary
pipe rock[′pīp ‚räk]
A marine sandstone containing abundant scolites.
References in periodicals archive
Skolithos pipe rock and associated ichnofabrics from the southern Rocky Mountains, Canada: colonization trends and environmental controls in an early Cambrian sand-sheet complex.
Trace fossils from the Lower Cambrian pipe rock of the north-west Highlands.