Or 2 flat laminated siltstone and argillaceous siltstone with thin intercalated claystone layers wherein the tidal origin of these rhythmites is indicated by the progressive thickening and thinning of individually accreted sets or bundles in response to changing current.

Tidally laminated sediments. Tidal rhythmites as defined by kvale and mastalerz 1998 include. Subglacial deformation of pre existing sediments may also produce laminated deposits in the form of glacitectonite and deformation till. In geology lamination is a small scale sequence of fine layers laminae. However structures from several millimetres to many centimetres.

Laminated glacimarine sediments form by a variety of processes including suspension settling from turbid overflow plumes turbidity current deposition and contour current activity. Sedimentary structures consisting of 1 stacked sets of clay draped ripples that as cosets can be classified as lenticular wavy and flaser bedding. In the present study in situ measurements of tides current velocities waves and suspended sediment concentrations sscs were measured at three shallow water sites with. In general the glen eyrie tidalite is similar to other carboniferous tidalites because the laminated sequence directly overlies a coal is well laminated directly above the coal and becomes more bioturbated and possesses more fine scale erosional features beginning several meters above the coal.

Tidally modulated shorefaces tms are wave dominated but differ from conventional shorefaces in that sediments deposited in water depths equivalent to the upper middle and lower shoreface. Several centuries after this initial inundation there was a rapid increase in water depth and tidal energy probably associated with historically documented flooding in the 13th century ad which resulted in the deposition of c. 4 m of tidally laminated sediments before site reclamation by c. At the northern site u1464 the sediments consist of shallow marine and possibly subaerial deposits including tidally laminated sediments and evaporitic nodules suggesting arid conditions.

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