Discordant Drainage Pattern
In a discordant drainage pattern, the river’s course does not align with the topography or geology of the area. It remains consistent despite changes in the landscape. This pattern is further divided into two types: antecedent and superimposed.
1. Antecedent Drainage:
Also known as inconsequent drainage, this occurs when a river maintains its original path even after the surrounding area is uplifted. It cuts through the uplifted portion, forming deep gorges through vertical erosion or down-cutting. Examples include the Indus, Sutlej, and Brahmaputra rivers.
2. Superimposed Drainage:
Also referred to as superinduced or epigenetic drainage, this occurs when a river flows over a softer rock layer but encounters harder basal rocks underneath. Despite the change in rock structure, the river maintains its original course due to its erosive power. This pattern reflects discordance with the underlying rock structure. Examples include the Damodar, Subarnarekha, and Chambal rivers.
Types of Drainage Patterns| Class 11 Geography Notes
Class 11 Geography Types of Drainage Patterns Notes: The Class 11 Geography notes explain the different types of drainage patterns in easy-to-understand language. They have been created by experts to help students learn effectively.
Whether you’re new to the subject or want to improve your understanding, these notes provide clear explanations of each drainage pattern, how they form, and what makes them unique. By studying these notes, students can enhance their knowledge and perform better in their geography studies.