Planar Bedding
Any plane is referred to as S -surface.
Planar bedding. Upper plane bed flow occurs in fine and very fine sand when the flow velocity is increased above that needed for ripple formation very fine sand or dune formation fine sand. This is planar cross-bedding and the surface at the bottom of the cross-beds is flat and close to horizontal because of the absence of scouring in the trough. Trough cross-beds form where higher flow intensities are present Rubin 1987 which cause erosional scours at the base of the slip slope of transverse bedforms Pettijohn et al 1987.
Shop Designer Snurk Bedding Range. Ad Shop Low Prices Discover Bestsellers. In geology lamination is a small-scale sequence of fine layers laminae.
Ad Shop Low Prices Discover Bestsellers. Strike of the planar cross-bedding and the trend of the lenticular-shaped channel cut-and-fill origin are almost at right angles to the exposure surface. Such a bed is termed a lower plane bed to distinguish it from another type of plane bed that develops under higher flow strengths.
Upper plane bed flow occurs in the upper flow regime Fd1. Grain fabric analyses were carried out by measuring the apparent long-axes seen in each thin-section whose orientation was either horizontal along the strike direction the X-Y plane fig. Foliation planes are reported for a wide range of temperature and pressure conditions from shallow crustal to deep mantle conditions.
In structural geology we are most interested in fabrics that originate when rocks are deformed. At high flow velocities. Ad Choose From A Huge Range Of Bedding Basics At Temple Webster Today.
Examples of primary fabric are bedding in sedimentary rocks and flow banding in igneous rocks. A sequence of formations which strike N70E each display an apparent dip of 25 in the N0E direction. Free Delivery on Eligible Orders.

