physical
Over time, weathering wears down the rocks and breaks off any ragged edges. Gravel doesn't have to be round, gravel can be crushed rock not smoothed by weathering. Click on 'related links' below for a list of gravel types
The corners and edges of an angular fracture bounded granitic block show the highest rate of weathering because they have more surface area exposed to weathering agents such as water and air. The sharp angles and edges of the block are more susceptible to erosion and fracturing due to the expansion and contraction caused by temperature changes.
== == Weathering and erosion. Weathering causes rock to break into smaller particles. When these particles are transported by wind, water, or ice, the jagged edges from fracture are gradually worn down from abrasion with other particles, making the outer surface appear relatively smooth. Sometimes the mere abrasive effects of windblown particles on a rock will smooth the exposed surface, leaving the remainder of the rock jagged. Rounded and smoothed stones, if rounded and smoothed on all sides, are usually the product of tumbling. Tumbling is usually accomplished by transportation of the stone by water and contact with other rocks. == ==
Because the weather is so strong that it comes directly to the rock and then day by day when the weather becomes horrible then it blews many things like that the wind and weather make it a round edge....
Some signs of weathering include cracks and fissures in rocks, rounding of sharp edges and corners of rocks, erosion of soil and rocks, and the formation of patterns on rock surfaces due to chemical or physical processes.
There are lots of shapes: a sphere, an ellipsoid, a smoothed blob.
Over time, weathering wears down the rocks and breaks off any ragged edges. Gravel doesn't have to be round, gravel can be crushed rock not smoothed by weathering. Click on 'related links' below for a list of gravel types
Mechanical weathering!!
certainly. At S/R Labs in Westlake Village ,CA, we do it all the time.
spheroidal weathering
spheroidal weathering
Spheroidal weathering
Spheroidal weathering
The gradual rounding of the corners and edges of angular blocks of rock is called weathering. Weathering is the process by which rocks and minerals are broken down into smaller pieces over time due to exposure to the elements, such as wind, water, and temperature changes. This process causes the sharp edges and corners of rocks to become smoother and rounded.
The corners and edges of an angular fracture bounded granitic block show the highest rate of weathering because they have more surface area exposed to weathering agents such as water and air. The sharp angles and edges of the block are more susceptible to erosion and fracturing due to the expansion and contraction caused by temperature changes.
Spheroidal boulders form through a process called spheroidal weathering, where rocks break down along their edges and corners due to chemical and physical weathering. This creates a more rounded shape over time as the corners and edges are eroded away, producing spheroidal boulders.
The edges and corners of cubes weather faster than the faces due to their increased exposure to environmental factors such as wind, rain, and temperature fluctuations. These areas have a greater surface area-to-volume ratio, making them more susceptible to erosion and weathering processes. Additionally, the angles and edges can create microenvironments that trap moisture and promote chemical weathering. As a result, the wear and tear from these elements tends to be more pronounced at the edges and corners compared to the flatter faces.