A package of impure fine sandstone with poorly developed bedding follows in the succession.
As a result, joints that traverse impermeable deformation band shear zones may provide the primary pathways for fluid flow in sandstones compartmentalized by these zones.
Numerous thin sandstone beds (in general about 10 cm thick) are separated by thicker units of flaser-bedded siltstones and mudstones.
Incubation vessels inside the chamber were filled with sterile sand, inoculated with crushed sandstone-based biofilms and allowed to incubate for 5.5 months.
The c. 25 m of purple, fine-grained sandstones below include quartz-arenitic intercalations and have an essentially calcareous matrix.
In the channel casts, the sandstone packages are separated by oscillation wave ripples and microbial structures.
The sharp-based sandstones with traction-generated internal sedimentary structures represent storm eventbeds emplaced by episodic storm-generated currents.
Some conglomerates contain thin (< 10 cm) lenses of sandstone.
