Photo Duncan Heron 46. Thick layers are grain flow and thin layers are grain fall. Rio Grande do Norte, Brazil. Photo Duncan Heron 47. Photo Duncan Heron 48.
Thick layers are grain flow and thin layers are grain fall.
Permian Schnebly Hill Fm. Photo Duncan Heron 49. Photo Duncan Heron 50. Planar laminations change upsection to cross-stratification indicating a decrease in current velocity. Photo Duncan Heron 51.