hiya
Sand is a lot of tiny rocks and clay is very compact soil.
Clay is soft and sand is like sand water
Sedimentary rocks form from layers of sand, silt or clay, sometimes mixed with pebbles, and the bodies of living things (that may the be fossilised) The rocks are often quite soft. Metamorphic rocks form when rocks (usually sedimentary rocks) are subjected to extreme heat and/or pressure, usually deep underground. The rocks are changed in form, often becoming harder. Fossils are usually destroyed by the process.
The Holderness Coast in the UK is primarily composed of soft sedimentary rocks such as clay, sand, and gravel. These rocks are easily eroded by the sea, causing the coastline to retreat at a rapid rate.
Soft clay typically has a higher bearing pressure compared to dry sand due to its higher cohesive properties. Soft clay can deform easily under load, leading to higher bearing pressures on the underlying foundation. Dry sand, on the other hand, has lower cohesion and tends to distribute loads more evenly.
Coal is typically considered to be a hard, black or brownish-black sedimentary rock formed from the remains of plants that lived millions of years ago. While it may not be as hard as some rocks, it is not classified as soft like clay or sand.
Clay is not considered a soft rock. It is a type of sedimentary material that is formed from the weathering and erosion of rocks. Clay has a fine particle size and exhibits plasticity when wet, making it an important material in ceramics and construction.
Clay is actually a description of sediment of a specific particle size. As such clay is not necessarily a rock. However when compacted and cemented clay forms claystone which is a sedimentary rock.
Kimmeridge Clay is a soft rock, composed mainly of clay minerals such as illite and kaolinite. It is typically easily eroded and can have low strength compared to harder rocks like sandstone or limestone.
Hard matrix is supposed to be used for digging hard rocks and soft matrix for soft rocks. It's quite confusing to me
silt soil is smaller than sand but larger than clay
No. Clay is quite rich in nutrients but lacks organic material and will dry out if not watered or will go sticky if watered too much. The ideal soil for a garden is a loam soil. It contains a balance of all three soil materials-silt, sand and clay-plus humus. Loam is dark in color and is soft, dry and crumbly-in your hands. Loam is a soil comprised of almost equal amounts of sand and silt and a little less clay.