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In geology, cross-bedding refers to inclined sedimentary structures in a horizontal unit of rock. These tilted structures are deposits from bedforms such as...
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Finding the key bed in these situations may help determine whether the fault ..... Geologic cross-section of Kittatinny Mountain. This cross-section shows...
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Angular unconformity: An unconformity in which the bedding planes of the rocks above and below are not parallel. Epoch: One subdivision of a geologic period, Intrusive rock: Igneous rock that is interpreted as a former intrusion from its cross-cutting contacts, chilled margins, or other field relations.
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A companion to the book by David M. Rubin of U.S. Geological Survey. Images of real bedforms and cross-bedding as well as animated computer-generated images help to understand the building of sedimentary structures. Cross-Bedding, Bedforms, and Paleocurrents...
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Bedforms and Cross-Bedding in Animation: Online version adapted from DVD publication by D.M. Rubin and C.L. Carter, SEPM Atlas Series No. 2; Software available for download: Macintosh, PC, and MATLAB software for simulating ripple and dune bedforms and cross-bedding...
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Britannica online encyclopedia article on cross-stratification (geology), Aspects of the topic "cross-stratification" are discussed in the following...
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cross-bedding ( ¦krös ′bediŋ ) ( geology ) The condition of having laminae lying transverse to the main stratification planes of the strata;
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cross bedding: A sedimentary rock texture characterized by overlapping and cross-cutting bedding, typical of aeolian sands. dip: An angle giving the orientatio n of a planar feature such as bedding or a fault plane; it is the acute angle measured between the planar feature and the horizontal. It is measure perpendicular...
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arroyo (ar-roy´-o) 1. A term applied in the arid and semiarid southwestern U.S. to a small deep flat-floored channel or gully of an ephemeral or intermittent stream. It is usually dry and has steep or vertical banks of cross bedding layering within a bed that is at an angle to the main bedding plain...
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CROSS-BEDDING is a special form of bedding where sediments may be deposited in a non-horizontal fashion. Cross-beds in sedimentary rock can be used to determine the direction the current which deposited the sediment was flowing. As the asthenosphere moves slowly over geologic time, so then do the overlying plates move -
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