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Drainage system (geomorphology) Dendritic drainage: the Yarlung Tsangpo River, Tibet, seen from space: snow cover has melted in the valley system. In geomorphology, drainage systems, also known as river systems, are the patterns formed by the streams, rivers, and lakes in a particular drainage basin. They are governed by the topography of land ...
Folded leaflet. A train company leaflet with a double parallel fold. Folded leaflets are usually used for advertising or marketing purposes, or for information supplementary to labels. There are many types of folds; only the most popular types are listed here. Although it is difficult to put a date on when some of these folds were first used ...
The ridge and valley system presents an important obstacle to east–west land travel even with today's technology. It was a nearly insurmountable barrier to European-American migrants who walked or rode horses traveling west to settle the Ohio Country, and later the Northwest Territory and Oregon Country.
The Pacific Coast Ranges (officially gazetted as the Pacific Mountain System[1] in the United States) [2] are the series of mountain ranges that stretch along the West Coast of North America from Alaska south to Northern and Central Mexico. Although they are commonly thought to be the westernmost mountain range of the continental United States ...
These folds were produced by Alpine deformation. In structural geology, a fold is a stack of originally planar surfaces, such as sedimentary strata, that are bent or curved ("folded") during permanent deformation. Folds in rocks vary in size from microscopic crinkles to mountain-sized folds. They occur as single isolated folds or in periodic ...
Atlas. Frontispiece of the 1595 Atlas of Mercator. An atlas is a collection of maps; it is typically a bundle of maps of Earth or of a continent or region of Earth. Atlases have traditionally been bound into book form, but today, many atlases are in multimedia formats. In addition to presenting geographical features and political boundaries ...
The Canadian Rocky Mountain foreland thrust and fold belt is a northeastward tapering deformational belt consisting of Mesoproterozoic, Paleozoic, and Mesozoic strata. The Lewis thrust sheet is one of the major structures of the foreland thrust and fold belt extending over 280 mi (450 km) from Mount Kidd near Calgary, AB in the Southeast Canadian Cordillera to Steamboat Mountain, located west ...
Note the man standing in front of the formation, for scale. New Jersey, U.S. In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the location where the curvature is ...