What is a drainage pattern. What is drainage pattern? explain any two patterns formed by the river. 2018-12-26

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Types of Drainage Patterns

what is a drainage pattern

The rivers occupying east-west trenches in the Himalayas form herringbone pattern. The watersheds are young and are still sorting themselves out. It is best displayed by streams draining a maturely dissected structural dome or basin where erosion has exposed rimming sedimentary strata of greatly varying degrees of hardness, as in the Red Valley, which nearly encircles the domal structure of the Black Hills of South Dakota. Eventually the system will stabilize. These lakes leave behind salt flats when they evaporate during dry seasons. The Chambal, Sind, Ken, Betwa, Tons and Son meet the Yamuna and the Ganga at right angles. Dendritic systems form in ; as a result, the rock types must be and.

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Drainage pattern

what is a drainage pattern

Angles are both more and less than 90 degrees. The streams emerge from the surrounding uplands. Morcha pahar and Lugu hill of Hazaribagh, Mt. Radial Drainage Pattern : Radial drainage pattern, also known as centrifu­gal pattern, is formed by the streams which diverge from a central higher point in all directions. A rectangular pattern is dominated by right-angled bends, and reflects control by or. A drainage basin is the topographic region from which a stream receives runoff, throughflow, and groundwater flow.

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Classification of Drainage Patterns

what is a drainage pattern

Trellised drainage patterns are generally formed in the regions of cuesta topography where hard beds become escarp­ments and soft beds are eroded to become valleys or lowlands. In a trellis pattern, the river forms a net like system and the tributaries flow roughly parallel to each other. The number, size, and shape of the drainage basins found in an area varies and the larger the topographic map, the more information on the drainage basin is available. This pattern resembles the veins of a leaf. Hazaribagh plateau, Parasnath hill, Panchet hill and Dalma lava upland all in Jharkhand have issued radial drainage pattern. The main stream emerges from the top of a dome, whereas the tributary streams develop in the fissures formed due to the erosion of the soft beds. Rectangular patterns form where drainage lines are adjusted to sets of faults and marked joints that intersect at about right angles, as in some parts of ancient crustal blocks.


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What is drainage pattern and different types of drainage pattern?

what is a drainage pattern

The joints are usually less resistant to erosion than the bulk rock so erosion tends to preferentially open the joints and streams eventually develop along the joints. It happens in areas where there has been much geological disruption. It has long and almost straight river valleys, with their tributaries, coming from the anticlinal ridges, joining almost at right angles. Radial Pattern It is a pattern characterised by out flowing rivers, away from a central point, analogous with the spokes of a wheel. The upper Jhelum River in the Vale of Kashmir receives numerous tribu­taries from both the sides and thus forms herringbone drainage pattern. Slope and permeability of rocks very effec­tively control the number and extension of streams of dendritic drainage pattern.

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What is drainage pattern? explain any two patterns formed by the river.

what is a drainage pattern

The number, size, and shape of the drainage basins found in an area vary and the larger the , the more information on the drainage basin is available. During the last ice age, the topsoil was scraped off, leaving mostly bare rock. A drainage basin is the region from which a stream receives , , and. The Annular Drainage Pattern: It is also known as the circular drainage pattern.  Trellis drainage patterns typically develop where sedimentary rocks have been folded or tilted and then eroded to varying degrees depending on their strength. The Rocky Mountains of B.

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Classification of Drainage Patterns

what is a drainage pattern

It is not structurally controlled and is developed on a homogeneous rock e. Annular Pattern In this drainage pattern, the subsequent streams follow curving or actuate courses prior to joining the consequent stream. Below are 4 common types of drainage patterns: Dendritic A dendritic drainage pattern is the most common form and looks like the branching pattern of tree roots. A parallel pattern also develops in regions of parallel, elongate landforms like outcropping resistant rock bands. Radial drainage system, the streams radiate outwards from a central high point.

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What are drainage patterns

what is a drainage pattern

Rectangular forms distinct changes in direction rectangles because the streams follow less-strong rocks. Other geological features on which radial drainage commonly develops are domes and laccoliths. Tectonic plate boundaries are not the only … places where earthquakesoccur. Drainage pattern is the pattern formed by the streams, rivers, and lakes in a particular drainage basin. The dendritic pattern is associated with the areas of homogeneous lithologies, horizontal or very gently dipping strata, flat and rolling extensive topographic surface having extremely low reliefs. This pattern can be found with the in Nepal. On the topo sheets, the streams or rivers which carry water throughout the year the perennial rivers are shown in blue colour.

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4 Common Types of Drainage Patterns

what is a drainage pattern

Source: Deranged Drainage patterns are found in areas recently disturbed by events like glacial activity or volcanic deposition. Major tributary streams of the master stream develop on either side of the trunk stream fig. It differs from the trellis pattern in so far as it is more irregular and its tributary streams are neither as long, nor parallel as in trellis drainage. Antecedent or Inconsequent Drainage The Rivers that existed before the upheaval of the Himalayas and cut their courses southward by making gorges in the mountains are known as the antecedent rivers. The common headline patterns are the following: 1. In India the range shows the best example of radial drainage pattern. They are governed by the topography of the land, whether a particular region is dominated by hard or soft rocks, and the gradient of the land.

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