Why is there yellow mud on the mountain, and how did this yellow mud come from? Does it have anythin

1.To be precise, this is not called yellow mud ......It is the loess formed by water, because the physical properties of loess are loose, porous, vertical joints are developed, easy to seepage, and there are many soluble substances, which are easily eroded by flowing water to form valleys, and are also easy to cause subsidence and collapse.

2.Loess refers to primary loess, that is, a homogeneous soil body mainly formed by the action of wind; Loess-like sediments refer to secondary loess that has been transformed by flowing water. The mineral composition of loess has 3 categories: detrital minerals, clay minerals and self-generated minerals, I don't know which one you are talking about, but since the composition includes all kinds of detritus, and it is in the mountains, it must be related to weathering, in addition, the soil can also be moved, and a sandstorm can move a lot from other places, right?

As for you saying that only the mountains are loess, that's for sure, because the surface and the mountains belong to different faults, and the difference in composition is very large, and the surface is mostly soil, and the mountains are mostly composed of rocks, and the rocks will be weathered, but there is no weathering problem on the surface.

Are you sure you have yellow clay? Is it the brownish yellow that has a little bit of orange?

What you are talking about is basically black soil, but the content of humus in it is relatively high, and it is suitable for cultivation, which seems to be called paddy soil in agriculture. It has been modified by humans for thousands of years, and geologically, it does not belong to natural soil.

The yellow soil on the mountain you are talking about is the soil left by the direct weathering of the rocks. I don't know what kind of rock you have, but the nature of the weathered soil varies greatly, but the color is not the same. The color of the soil mainly depends on the temperature and humidity.

Like you in Zhejiang, the soil that is naturally weathered should be brown to yellow-brown, and it is generally called yellow soil in agriculture. It has not been artificially modified, has a low organic matter content, and the chromogenic substances only contain ferric iron.

Of course, if you dig a well or dig a deep pit, you will find that the normal black soil is not very deep underneath, and the color of the soil gradually changes to brown, yellow-brown, brownish-yellow. The yellow soil underneath was washed down from the nearby mountains by rain, or by the river from the farther mountains. Humans have limited ability to transform and can only turn the soil less than a meter deep above it black.

I don't think the rocks turn into silt and sand is not weathering.

It's the crushing of rocks. There are two aspects to rock weathering:

1.Physical weathering: The process by which the physical changes of minerals and rocks caused by physical actions are reversed. It is also called mechanical disintegration.

Influencing factors: temperature changes, moisture freezing, wind, flowing water, glacier friction.

Wait. As a result of weathering, large rocks become fragments, increasing the contact surface and facilitating chemical weathering.

2.Chemical weathering.

The mineral composition of rocks undergoes changes in chemical composition and properties.

Main factors: water, carbon dioxide.

oxygen, etc. There are 4 main types of chemical weathering:

Dissolution: The process by which a mineral dissolves in water. Solubility of rock-forming minerals.

The order of size is: calcite.

Dolomite" peridot.

Pyroxene, Amphibole, plagioclase, orthoclase, biotite, muscovite, quartz.

Hydration: Minerals are combined with water. Such as hematite becomes limonite.

Hydrolysis: Minerals meet with water, causing the minerals to decompose and form new minerals. For example, after orthoclase is hydrolyzed, potassium ions are released by excitation and become kaolinite.

Oxidation: Oxidation of ferric iron to ferric. Stains the surface of many minerals and rocks reddish-brown.

This is yellow wax stone.

Yellow wax stone, also known as dragon king jade, is named because of the waxy texture in the surface of the stone. It is a quartzite mineral that is affected by geological changes, mixed with acidic soil, and there are natural conditions such as geothermal or volcanic near acidic soil, which is metamorphized to form xanthalite by the dual catalysis of acidic soil and geothermal volcanic temperature for a long time. So the structure is compact, tough, and hard.