A drainage pattern refers to the geometric arrangement of streams and rivers in a particular region, influenced by topography, geology, and structure of rocks. Different drainage patterns arise due to variations in slope, rock resistance, fault lines, and the geological history of the region. 1. Trellis Drainage Pattern š Formation: This pattern is formed when…
When a river flows across a region, its path is not random. It is often influenced by the land’s initial slope, rock type, geological structure, and subsequent land changes. Based on how streams adjust themselves to the surface and underlying geological structure, drainage systems are broadly classified into: 1. Sequent (Concordant) Drainage System In this…
Suppose you are standing at the top of a hill after a heavy rainfall. As the rainwater falls, it begins to flow down through different small paths, merging with other water streams until it finally reaches a large river or lake. This entire process ā where water finds its way through various channels and collects…
Various theories have been proposed to describe the mechanisms of slope development, each offering a unique perspective on how slopes transform. From W.M. Davisā concept of slope decline, which emphasizes a gradual reduction in slope steepness, to W. Penckās slope replacement model, which focuses on the accumulation of debris at the base, these theories highlight…
To understand how slopes evolve and change over time, researchers use two major approaches: Slope Evolution Approach and Process-Form Approach. Each has its own methodology, advantages, and challenges. 1ļøā£ Slope Evolution Approach: Tracing the Historical Development This approach focuses on the historical transformation of slopes over time. ā Davisian Model of Slope Decline falls under…
While an ideal hillslope consists of all four elementsāsummital convexity, free face, rectilinear slope, and concave baseāthese elements donāt always appear together. Their presence and arrangement depend on local conditions, geological structure, and the stage of erosion. For example:ā In areas with low relief, a free face may not develop at all.ā If hard and…
If you observe a hill, it is a layered staircase rather than a simple slanting surface. Each part of this hillslope profile plays a distinct role in shaping the landscape. Let’s study its four major elementsāeach having unique characteristics and processes at work. 1ļøā£ Summital Convexity: The Crest of the Hill Think of the summital…
Imagine you are standing on a hilltop, looking down at the valley below. The land between where you stand and the valley floor isnāt flatāit slopes downward at various angles. This angular inclination of terrain between hilltops and valley bottoms is what we call a slope. But why does this happen? What shapes these slopes?…
Imagine you are watching a cricket match. The batsman, initially full of energy, starts playing aggressively, hitting boundaries with ease. As the innings progresses, fatigue sets in, and the once-powerful strokes become slow nudges. Just when you think he is about to retire, he drinks an energy booster and suddenly regains his power, smashing the…
Imagine you are standing atop a vast plateau, looking at rivers carving their way through valleys, shaping the land ever so gradually. Now, visualize this transformation as a slow but continuous process, much like an artist chiselling a sculpture over centuries. This is the essence of the Davisian Cycle of Erosion, a concept that describes…