The Amazon River is an example of dendritic drainage, which resembles the branching pattern of tree roots. Dendritic drainage patterns are common in areas with uniform rock structure and slope, where rivers and streams flow in multiple directions.
A trellis drainage pattern develops on lands underlain by alternating bands of resistance and less-resistant rock. Water streams cause this to develop over a long period of time as a result of the erosional process.
The St. Lawrence River drainage system exhibits dendritic drainage, characterized by a network of streams that resemble tree branches. This pattern is typical of regions with uniform rock types and gradual slopes, allowing water to flow in a tree-like pattern towards the river.
A trellis drainage pattern typically forms on folded or tilted rock layers, indicating the presence of underlying folded or tilted bedrock. This pattern develops when rivers flow along the axes of folds or along the edges of tilted rock layers, eroding and shaping the landscape accordingly.
The dendritic pattern develops where the river channel follows the slope of the terrain. The stream with its tributaries resembles the braches of a tree , thus the name dendritic. It also flows underneath a rock that is the same hardness.
You would likely find a trellis drainage pattern in this scenario. This pattern forms when rivers flow parallel to the folding and erosion of the rock layers, creating long, straight valleys and ridges. The pattern is influenced by the alternating soft and hard rock layers being eroded at different rates.
Dendritic drainage patterns resemble the branches of a tree, forming a network of tributaries that typically develop in areas with homogeneous rock types and gentle topography. In contrast, radial drainage patterns emerge from a central high point, such as a volcanic cone or mountain, with streams radiating outward like spokes on a wheel. The key difference lies in their formation: dendritic patterns are influenced by uniform geology, while radial patterns are shaped by topographic features.
the term natural drainage means the natural run off of water from an area in rivers and streams . Drainage pattern, drainage system and network of rivers are terms use dto describe the nautural drainage of an area. ( extracted from 'THE ENVIRONMENT OF PAKISTAN " By Huma Naz Sethi )
how diffrence in resistance of rock affect drainage patterns
Rectangular
The Amur River features dendritic drainage. This pattern of river system resembles the branching of tree roots and is common in areas with homogenous rock structures, where water flows in a branching pattern towards lower elevations.
The OB River, like many rivers, can exhibit different drainage patterns based on its geological and topographical context. Typically, a trellis pattern forms in areas with alternating layers of resistant and less resistant rock, while a dendritic pattern appears in regions with uniform materials. Without specific geological details about the OB River, it's challenging to definitively categorize it as one or the other. However, observing its flow and surrounding landscape would provide clearer insight into its drainage pattern.