The ophiolite is overlain by a
conglomeratic interval assigned to the Maastrichtian Qahlah Formation which comprises well rounded ophiolite pebbles and is interpreted as a beach deposit although with fluviatile basal sediments (Fig.
Additionally, there are several zones where sands,
conglomeratic sands, and coals appear to be inter-bedded.
The Botucatu Formation occurs over the previous one and includes red and quartz sandstone, fine to very fine until
conglomeratic, very resistant to erosion, and displaying medium to large slotted cross bedding.
The new species was collected from a
conglomeratic sandstone bed from the basal 4.5-6.0 m (15-20 ft.) of the Schulz Ranch Member above a disconformable contact with the underlying Holz Shale Member of the Ladd Formation.
The sediments of the Turtle Butte Formation were deposited in a fluvial system, specifically a meandering stream system evidenced by the
conglomeratic sandstones of channel deposits and the large number of siltstone and claystone units representing floodplain deposits.
The lowermost part of the sandy ejecta includes
conglomeratic sandstone interlayers with pebbles of black Dictyonema shale (kerogen-enriched argillite) and crystalline rocks (Kleesment et al.
The Khok Kruat formation consists of red to purplish grey bedded sandstone, siltstone, and shale with interbedded calcareous
conglomeratic sandstone, sandy limestone, and calcareous siltstone which is mottled with purplish grey and greenish grey colours.
In the deep core collected at the USI campus, a short (< 0.6 m) interval of a coarse
conglomeratic unit containing limestone clasts separates the limestone from the sandstone.
At this exposure above a sandy-clay, which makes up the creek floor, is a two-foot-thick
conglomeratic sandstone.
The Ogallala is easily distinguished from the other formations by its light brown to buff color and by its
conglomeratic phases.
These sedimentary deposits have undergone weak regional metamorphism which permitted the transformation of schist to seritoschists, chloritoschists, graphitic schists, sandy schists, and quartzites, to coarse grained
conglomeratic quartzites, to quartzite of medium grained, fine-grained quartzites and to differentiate the phyllitic and siliceous facies.
The study area mainly consists of sandstone, limestone, shale, marl and some
conglomeratic beds.
