Interdistributary bay sediments are almost mudstones interlaminated
with thin and lenticular very fine-grained sandstones and siltstones (10 to 20 cm thick).
Above the maestro layer are marls (to 2 meters) followed by gypsum layers (1-2 meters) interlaminated
with thin marl horizons.
ice-proximal glacimarine sediments in Muir Inlet, Alaska.
In hybrid interply (interlaminated
) composites, two or more homogeneous layers of fibre reinforcement are stacked layerwise with one type of fibre in single layer, and then different fibre plies are dispersed throughout the laminate, while in hybrid intraply (intermingled) laminates two or more different fibre tows are combined in a single layer of reinforcement with no intentional concentration of either type of fibres throughout the resin [105, 106].
The brief description in the map legend indicates a lithology consisting of interbedded to interlaminated
, pale yellow sand with common siderite concretions and nodules.
All of our material has been recovered from strata assignable to the lacustrine Emery Brook Fm., and occurs within or upon cyclically interlaminated
to interbedded, thin, horizontally laminated, very-fine or fine-grained grey sandstones and dark grey siltstones.
The specimens range up to 40 x 40 cm in size, with smooth to crusty surfaces, and interlaminated
chrysocolla/heterogenite matrix typical of the Shaba localities.
Rhyolite of the Porten Road Formation continues for another 100 m downstream and is followed after a gap of 50 m by greyish green silty mudstone interlaminated
with fine-grained, greyish brown sandstone inferred to again represent the lower part of the Eel River Formation.