cross-bedding

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cross-bedding

[¦krȯs ′bed·iŋ]
(geology)
The condition of having laminae lying transverse to the main stratification planes of the strata; occurs only in granular sediments. Also known as cross-lamination; cross-stratification.

cross-bedding

In sedimentary rocks, inclined laminations or bedding which lends textural and color pattern to building stone of such material.
References in periodicals archive ?
Considered as a single cross-bed lamina, both pair of laminae range from 20 to 100 mm, which is very thick considered common cross bedding thickness, which averaged 30 ([+ or -]10) mm (Reesink and Bridge, 2009).
There, cross bedding is not as clearly seen as in the middle or upper part of the bed-form (Fig.
Jutana Formation is mainly characterized by, trough-, herring-bone-, hummocky- cross bedding at upper bedding planes and bedding parallel stylolites.
Paleocurrents from cross bedding data show flow was dominantly southward (Fig.
Towards the top, they grade into thick sandstone levels with different types of medium-scale cross bedding and large cross-stratification.
The conglomerates and conglomeratic sandstones are followed in succession by coarse sandstones, partly conglomeratic, with low-angle cross bedding and shallow channel forms, suggestive of braided stream deposits (Fig.
Bioturbation, ripple marks and mudcracks are observed in Mianwali Formation, while cross bedding is dominant in the overlying Tredian Formation.
The succession displays sedimentary structures such as large scale trough-cross bedding, low-angle cross bedding and parallel lamination, ridges and furrows and iron concretions on top of the beds.
Sedimentary and structural features such as scouring surfaces, cross beddings and plumose markings are noticed in the Dhok Pathan Formation.
The sedimentary structures include horizontal bedding, planar and trough cross beddings, load-casts, imbrications, fining-upward, burrows, scour, and fill and mud balls.