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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.
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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 .
Hummocky cross-stratification from the Book Cliffs, Utah. Hummocky cross-stratification from the Arisag Formation (Silurian), Nova Scotia. Hummocky cross-stratification is a type of sedimentary structure found in sandstones. It is a form of cross-bedding usually formed by the action of large storms, such as hurricanes. It takes the form of a ...
Disney’s “Mufasa: The Lion King” is reigning over the holiday box office. The family film, which is a prequel to “The Lion King” (both the 1994 animated classic and the less canonical ...
You've heard it a million times: Eat fewer calories, lose weight. But what if you're in a calorie deficit—consuming fewer calories than you're burning—and still not losing?
Ectopic and miscarriage. For those who do manage to conceive, things can still go wrong. After an egg is fertilised, it should implant into the lining of the womb.
A number of cross-bedding patterns are found in sediments, and reflect the currents that deposited them. Subcategories. This category has only the following ...