gravel size sediment, no reaction to acid

gravel size sediment, no reaction to acid

sand size sediment, no reaction to acid

sand size sediment, no reaction to acid

clay size sediment, no reaction to acid, breaks in thin, brittle layers

micro-crystalline, no reaction to acid, scratches glass

light weight, no reaction to acid, small leaf impressions

crystalline, no reaction to acid, layered, can be scratched with a fingernail

crystalline, no reaction to acid, cubic cleavage, tastes like salt

weak reaction to acid, gritty feel

strong reaction to acid, powdery

strong reaction to acid; small sand-sized spheres

strong reaction to acid, fossil shell fragments with not much cement matrix

strong reaction to acid, very smooth, no visible grains or fossils

strong reaction to acid, layers, large sand to pebble-sized fragments, but no fossil shells

strong reaction to acid, fossil shell fragments with a dense cement matrix