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Tabular cross-bedding, or planar bedding consists of cross-bedded units that are extensive horizontally relative to the set thickness and that have essentially planar bounding surfaces. [3] Trough cross-bedding, on the other hand, consists of cross-bedded units in which the bounding surfaces are curved, and hence limited in horizontal extent.
A bedding surface is three-dimensional surface, planar or curved, that visibly separates each successive bed (of the same or different lithology) from the preceding or following bed. Where bedding surfaces occur as cross-sections, e.g., in a 2-dimensional vertical cliff face of horizontal strata, are often referred to as bedding contacts .
Any planar feature can be described by strike and dip, including sedimentary bedding, fractures, faults, joints, cuestas, igneous dikes and sills, metamorphic foliation and fabric, etc. Observations about a structure's orientation can lead to inferences about certain parts of an area's history, such as movement, deformation, or tectonic activity.
Sharp, conformable sandstone bedding contact, near Terrace Bay, Ontario, Canada. Conformable contacts represent no time gap in the geologic record. [3] They are usually planar, though they may have slightly irregular topography. These contacts represent continual, uninterrupted deposition and accumulation of sedimentary rocks, or represent lava ...
Animals like cats are ideal pets for small living spaces like apartments because square footage matters less to them as long as there are various levels they can exist at.
Cats might actually prefer to sleep near our torsos or even on our chest, but have probably learned from experience that this isn’t a great idea. Our feet move less and are comparatively less ...
A friend of mine recently got a tripod cat, who had lost one of his hind legs in a car accident. Honestly, you would never know the difference. That cat is more of a daredevil than my own, four ...
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