Keywords: NewarkBasin BoontonFormation.jpg Boonton Formation exposed in a road cut in Pequannock Township The image shows three distinct layers within this section of the formation The bottom layer appears to be composed of flaggy purple siltstone and mudstone while the middle layer is composed of conglomerate mainly large pebbles surrounded by purple sandstone/siltstone The top layer appears to be either a carbonate bearing siltstone or some sort of irregular carbonate concretion with a light gray coloration Self Lithium6ion 2010-07-24 Geology of New Jersey Outcrops in New Jersey |