If composting follows proper procedure, then it'll be the organic matter called humus in 21 days to a year. The amount of time depends on the turning. A minimum of a turn each day should give the desired results in less than a month.
But this assumes that bedrock and gravel will be left to natural weathering processes. However, mechanical means of pulverizing bedrock and gravel would be faster than breaking compostable materials down into humus, for use as a soil amendment, fertilizer or mulch.
Yes and also can be found in bedrock
Bedrock
The solid rock that underlies loose material, such as soil, sand, clay, or gravel.
Loam does not contain gravel.
No. Sand and gravel are two different terms for describing sediment size. Gravel is a size up from sand.
Yes and also can be found in bedrock
You're talking about driveways, right? As in your zoning says you can have either a concrete drive, an asphalt one or a sand & gravel one? Gravel is crushed rock, and they say "sand and gravel" because gravel almost always has sand in it. Crushed loose bedrock would be fine.
Bedrock
The solid rock that underlies loose material, such as soil, sand, clay, or gravel.
It is usually called bedrock. When bedrock is very close to the surface it is often referred to as ledge.
No. They can only pick up grass, dirt, sand, gravel, etc.
Top soil.
Yes it is actually the fastest way to get flint from gravel. There is a small chance to actually get flint from gravel ether way.
First dirt, plastic, gravel are deleted by filtration. The solution is evaporated and a salt is obtained as a residue.Again add water: gravel is sedimented in water, plastic floats and both can be separated; dirt is separated by a new filtration.
No. Humus is organic matter, and formed over the years as living organisms (mostly plants) die and decompose in the soil. It is about 58% carbon, by weight. Bedrock can decompose, too, but it never becomes humus. Depending on the type of bedrock, it breaks down into sand, silt, gravel and clay minerals. Limestone bedrock may dissolve.
A gravel vacuum cleaner is a long rubber tube connected to a larger plastic cylinder that sucks out fish waste and food that are on or below the gravel in a fish tank.
Aged garden is the kind of compost mix to buy (or make) for roses in a tub. Gravel needs to be on the bottom, which then is topped with a mix of one-third each of clay, decomposed compost, and sand for proper aeration, drainage, moisture, nutrients, and weed control.