At the base of the Stretton Group the rocks are of basinal oceanic facies and as time goes a coarsening occurs with increased terrigenous input from the continent.
Turbidites are observed and deltas form latterly with alluvial plains with occasional marine washovers.
[6] A grey/green shale with normally graded siltstone which is interpreted as a distal turbidite with basin floor facies.
[2][5][6] A mudstone lithology with inter-bedded, laminated and cross stratified sandstones is interpreted as alluvial plain, fluvial and possibly deltaic deposits.
[2][3][5][6] This succession comprises red mudstones and siltstones interbedded with fine grained sandstones although it is sandier and coarser than the Synalds and Lightspout formations but also interpreted as alluvial plain and fluvial deposits.
The base is marked by the Huckster Conglomerate which is thought to be deposited in a braided fluvial (palaeo)environment.