The first level consists of 10-90 cm thick medium-to coarse-grained micaceous sandstone beds, separated by erosion surfaces and fully bioturbated
by vertical to steeply inclined 5-80 cm long tubes.
The overlying Awgu Group (Coniacian--Santonian) consists of the grey-blue Awgu-Ndeaboh Shale and the medium to coarse-grained bioturbated
fusulinid rich sandy bioturbated
limy###BeddedSand Facies Classification
2) show an upward progression into a highly bioturbated
facies with abundant trace fossils, that lacks turbiditic structures.
Photographs indicate that margin sediments are generally highly bioturbated
In strongly bioturbated
intervals, clay minerals are concentrated to wall linings of tunnels formed by the activity of in-fauna, or to the passive fill of burrows.
Nitrogen cycling in lake sediment bioturbated
by Chironomus plumosus larvae, under different degrees of oxygenation.
Elsewhere, the marine sediments are horizontally bedded and highly bioturbated
and commonly contain fossil red algal fragments and barnacles.
The association of megarippled sandstone beds and interbedded laminated and bioturbated
fine-grained sediments indicates this sequence was deposited in a near-shore environment.
Prothero and Schwab, 1996) are present on the top of bioturbated
magnetite-rich units (magnetite lenses) of the oldest facies of the Cotui Limestone, Cabo Rojo-San German, in southwestern Puerto Rico (Santos, 1990, 1999).
2004) or cohesive soils with an interconnected macropore structure, such as bioturbated
Quantifying solute distributions in the bioturbated
zone of marine sediments.