Planar Cross Lamination

The term cross lamination is used rather than cross bedding.

Planar cross lamination.

Faint planar lamination the lamination is poorly developed because the sediment is often poorly sorted and not much transport is occurring. Chapter 17 planar stratification introduction 1 planar stratification is just as common as cross stratification if not more so but the literature on it is not nearly as large. In geology lamination is a small scale sequence of fine layers laminae. Cross bedding dan cross lamination cross bedding adalah fitur yang terjadi pada berbagai skala dan teramati pada konglomerat dan batupasir.

Cross stratification is commonly manifested as lamination within a much thicker stratum that is at least in some places at an angle to the bounding surface of the given thicker stratum. Locally low angle planar cross stratification parallel lamination and mudstone rip up clasts. Because the transport direction varies through time the orientation of cross laminations vary through time. The foreset laminae of tabular cross beds are curved so as to become tangential to the basal surface.

Sebuah batuan sedimen tunggal dapat. Laminasi sering dianggap sebagai setiap struktur planar yang berukuran lebih kecil dari 1 cm dan bedding sebagai setiap struktur planar lebih besar dari itu. The most commonly described types are tabular cross bedding and trough cross bedding. Lamina that occurs in sedimentary rocks laminae are normally smaller and less pronounced than bedding lamination is often regarded as planar structures one centimetre or less in thickness whereas bedding layers are greater than one centimetre.

Tabular planar cross beds consist of cross bedded units that are large in horizontal extent relative to set thickness and that have essentially planar bounding surfaces. Cross bedding can be subdivided according to the geometry of the sets and cross strata into subcategories. Tabular cross bedding or planar bedding consists of cross bedded units that are large horizontal wise with reverence to set thickness and that have. However structures from several millimetres to many centimetres.

In a sense the title of this chapter is misleading. Planar laminae have planar bounding surfaces. Common mudstone drapes and wave and current ripple cross lamination. Corresponding to the official division of strata into beds and laminae cross stratification can be classified as either cross bedding or cross lamination.