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That is a difficult question in that its phrasing leaves the answer uncertain. In terms of soil - there are three classifications of rock particles when defined by particle size. All three have definite size limits. Sand is the largest or coarsest of the three sizes (generally 0.06 mm up to 2mm) while clay is the finest (less than 0.002 mm). The in-between sized particles are called silt (.002 mm to .06 mm). All three are created by the weathering, crushing or chemical breakdown of rock into particles. Normally rock will continue to break down in size over time until a particle is one crystal of one of the various minerals that comprised the original rock formation. So whether the rock particles ultimately become clay, silt or sand is determined by the mineral composition of the originating rock. The coarsest grains of sand often contain more than one crystal of the original mineral and will still become finer over lengthy periods of time. There are also three main types of rock - sedimentary, igneous and metamorphic. But this is the answer to another question so I won't go any further along this topic right now. So I guess the answer to the question is - the surface contains the largest rock particles. That is where we find all three types (as defined by size) - clay, silt and sand. So far we have gone down twelve miles and are still finding some soil, but even so that is a small fraction of the over 3500 miles to go from the outermost surface (ignoring mountains which only add a few miles at most) to the center of the earth. Still, the largest concentration is probably in the first 20-40 feet so the answer remains - the outer surface. Note that the outer surface also includes the sea bed. Sorry - this may not be the exact answer that was sought, but in order to give a better answer, the question must be more precise.
What else can I help you with?
A Solid layer of rock under the soil is called?
This layer of solid rock is called bedrock.
What layer of the earth is made up of solid rock soil and minerals?
The second layer
When forming a sedimentary rock the layer that is deposited first is the?
soil
What does bed rock in the water cycle?
Bed rock is a layer of soil. It seeps the water down.
What is the mixture of mineral and rock particles remains of organism water and air?
The mixture you are describing sounds like soil, which consists of mineral and rock particles, organic matter from decaying organisms, water, and air. Soil is vital for supporting plant growth and providing nutrients for ecosystems.
What is the meaning of the layer soil?
it is the top layer of the earth's surface consisting of rock and mineral particles mixed with organic matter.
Is the parent rock the largest component of soil?
No, the parent rock is not the largest component of soil. Soil is composed of a mixture of mineral particles, organic matter, water, and air. The parent rock contributes to the mineral content of the soil through its weathering and breakdown processes.
What layer or layers of soil includes rock particles mixed with dark products of decay?
The layer that includes rock particles mixed with dark products of decay is the topsoil layer. Topsoil is the uppermost layer of soil that is rich in organic matter and supports plant growth. It is a combination of mineral particles, organic matter, and nutrients that are essential for plant development.
What is the layer of soil that contains the most humus and smaller rock?
The layer that contains the most humus and smaller rocks is the topsoil layer. Topsoil is the uppermost layer of soil that is rich in organic matter, such as humus, and contains smaller rock particles that have undergone weathering. It is the most fertile layer of soil and is crucial for plant growth.
List the three types of weathered rock particles found in soil?
The three types of weathered rock particles found in soil are sand, silt, and clay. Sand particles are the largest, followed by silt, and clay particles are the smallest.
What particles are in soil?
Soil particles typically include sand, silt, and clay. Sand particles are the largest, silt particles are medium-sized, and clay particles are the smallest. Organic matter, water, and air pockets also make up soil composition.
What is the layer in which all soil sits?
Soil scientists divide soil into horizons based on depth and soil make up. The O horizon, the very top layer right under the grass, is where the top soil is. This is the soil that is critical to human life.
What is the soil layer of rock beneath the soil is called what?
The soil layer of rock beneath the soil is called bedrock. It is the solid rock layer that underlies the loose topsoil and subsoil layers.
What layer of soil is partially weathered bedrock?
The layer of soil that is partially weathered bedrock is known as the "C horizon" or the "parent material layer." It contains a mix of weathered rock fragments and soil particles, with limited organic matter compared to upper soil layers.
What is the layer of solid rock below the soil?
The layer of solid rock below the soil is called bedrock. It is composed of consolidated rock that serves as the foundation for the soil layer above it.
Where in a soil profile is solid rock being weathered into soil?
The process of solid rock being weathered into soil typically occurs in the parent material layer of the soil profile, which is the layer closest to the unaltered bedrock. Weathering processes, whether physical or chemical, gradually break down the solid rock into smaller particles to form the soil.
What two particles combine to make coarse soil?
Coarse soil is typically a combination of sand and gravel particles. Sand particles are larger than silt and clay but smaller than gravel, while gravel particles are the largest of the three soil types.
