They can sometimes also be found on tops of mountains. It has long and almost straight river valleys, with their tributaries, coming from the anticlinal ridges, joining almost at right angles. The result is a stream system in which streams consist mainly of straight line segments with right angle bends and tributaries join larger streams at right angles. The common headline patterns are the following: 1. The longitudinal consequent streams, as master streams, are developed in the longitudinal parallel valleys while tributaries, as lateral consequents, after originating from the hillslopes of the bordering parallel ridges join the longitudinal consequents almost at right angle. Chapter 7, Origins of Stream Valleys and Drainage Patterns.
Tributary streams tend to stretch out in a parallel-like fashion following the slope of the surface. 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. Angles are both more and less than 90 degrees. The Parallel Drainage Pattern: This drainage pattern comprises a large number of rivers, which flow parallel to each other and follow the slope of the region. I worked as a highway engineer.
The depression formed at the top of Raigarh Dome in the Lower Chambal Basin has given birth to centripetal drainage pattern. The Rocky Mountains of B. The streams emerge at the central point of the aforesaid reliefs and drain down the slopes in all directions. This in factcoincides with the classical Greek notion of tragedy, which is thatsuch events are fated and inexorable. The master consequent streams emerge at the top of the dome and rediate in all directions down the slope like radial drainage pattern whereas tributary streams develop in the clefts formed due to erosion of soft beds, assume actuate shape and join the master consequent streams and thus annular drainage pattern is formed. The pattern is called dendritic on the ground that the network of tributaries of various orders and magnitudes of the trunk or master stream resembles the branches and roots and rootlets of a tree. The classic example is the Canadian Shield.
This pattern is formed by a series of streams which after emerging from surrounding uplands converge in a central low land which may be a depression, or a basin or a crater lake. Drainage pattern is the pattern formed by the streams, rivers, and lakes in a particular drainage basin. Tectonic plate boundaries are not the only … places where earthquakesoccur. A parallel pattern also develops in regions of parallel, elongate landforms like outcropping resistant rock bands. If the original direction of flow has been reversed, the stream is reversed. Drainage patterns depend on the and of the land.
In an annular drainage pattern streams follow a roughly circular or concentric path along a belt of weak rock, resembling in plan a ringlike pattern. The flowing water can erode the soft rocks and thus flows along the bands of soft rock. Examples would be granite, gneiss, volcanic rock, and sedimentary rock that has not been folded. The Annular Drainage Pattern: It is also known as the circular drainage pattern. Ponding is especially dangerous when freezing weather sets in and ice hazards result. This pattern is generally noticed in flat regions. The centripetal drainage system is similar to the radial drainage system, with the only exception that radial drainage flows out versus centripetal drainage flows in A deranged drainage system is a drainage system in drainage basins where there is no coherent pattern to the rivers and lakes.
On these features the drainage may exhibit a combination of radial patterns. 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. It is ideally developed in the uniformly sloping beds. 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. Dendritic looks like tree branches, with the river being thetrunk and the tributary streams being the branches. There is no one common pattern - every plot is slightly different,otherwise people would stop reading new stories because they wereall the same! Other geological features on which radial drainage commonly develops are domes and laccoliths. In such environmental conditions the pattern extends both in length and width but if the region is characterized by higher slope angles, the pattern extends more in length than in width.
Determined by the existing rocks and superficial deposits in youthful systems but in more mature, often by strata subsequendy removed. Eventually the system will stabilize. On these features the drainage may exhibit a combination of radial patterns. It happens in areas where there has been much geological disruption. Parallel Drainage The drainage pattern in which the rivers flow almost parallel to each other is known as parallel drainage. During the last , the was scraped off, leaving mostly bare rock. Types of drainage patterns found in India 1.
The Kathmandu valley of Nepal presents an ideal example of centripetal drainage pattern wherein the tributary streams of the Baghmati converge in the tectonically formed circular basin. The tributaries do not meet the main stream at right angles. Land can be graded and shaped to our needs, but this is probably a job for a contractor. The resulting pattern often reflects the underlying rock type and structure, and several varieties are recognized. Inadequate size drains culverts under roadways can cause flooding of the roadway and closure of the roadway. A rectangular pattern is dominated by right-angled bends, and reflects control by or. The streams emerge from the surrounding uplands.