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Graded bedding is a sorting of particles according to clast size and shape on a lithified horizontal plane. The term is an explanation as to how a geologic profile was formed. Stratification on a lateral plane is the physical result of active depositing of different size materials. Density and gravity forces in the downward movement of these ...
Cleavage is a type of secondary foliation associated with fine grained rocks. For coarser grained rocks, schistosity is used to describe secondary foliation. There are a variety of definitions for cleavage, which may cause confusion and debate. The terminology used in this article is based largely on Passchier and Trouw (2005).
Sketch (streamer) Kylie Cox (born 1998 or 1999), [ 4][ 1] known online as Sketch or TheSketchReal, is an American Twitch streamer and YouTuber. He is well known for his catchphrase, " What's up, brother? ", which went viral and became a trend on the short-form video platform TikTok.
The Bouma sequence specifically describes the ideal vertical succession of structures deposited by low-density (i.e., low sand concentration, fine-grained) turbidity currents. An alternate classification scheme that is generally called the Lowe sequence exists for the ideal vertical sequence of structures deposited by high-density flows. [ 2]
Lofting. Lofting is a drafting technique to generate curved lines. It is used in plans for streamlined objects such as aircraft and boats. The lines may be drawn on wood and the wood then cut for advanced woodworking. The technique can be as simple as bending a flexible object, such as a long strip of thin wood or thin plastic so that it passes ...
Dwell mechanism. A single-dwell linkage. The orange circle shows the circular arc the coupler curve is approximating. A camshaft with two single-dwell cam-follower mechanisms. A dwell mechanism (either a linkage or cam -follower type) is an intermittent motion mechanism that alternates forward and return motion with holding position (s). [ 1]
Bed (geology) In geology, a bed is a layer of sediment, sedimentary rock, or volcanic rock "bounded above and below by more or less well-defined bedding surfaces". [ 1] Specifically in sedimentology, a bed can be defined in one of two major ways. [ 2] First, Campbell [ 3] and Reineck and Singh [ 4] use the term bed to refer to a thickness ...
Flaser bedding, vertical section. Flaser beds are a sedimentary, bi-directional, bedding pattern created when a sediment is exposed to intermittent flows, leading to alternating sand and mud layers. While flaser beds typically form in tidal environments, they can (rarely) form in fluvial conditions - on point bars or in ephemeral streams, or ...