why erosion occurs

WHY EROSION OCCURS

Different causes of erosion:

Erosion is an ongoing process, and can be caused by nature or by artificial means.

Many people associate with negative things like landslides, poor conditions and soil pollution.

One of the most powerful causes of erosion is water. Water is the universal solvent par excellence, because it is very effective in the solution and has the ability to change things.

The tectonic movement may also contribute to erosion, as wind and climate change.

Así mismo, los materiales también, naturalmente, tienden a deslizarse por una pendiente, en un proceso conocido como remoción en masa. Este empuje hacia abajo es lo que hace que las montañas se aplaquen lentamente en las colinas y llanuras, aunque no siempre en forma de un deslizamiento de tierra.

Deforestation can also cause erosion - as seen in the current deforestation of the Amazon - since the range of plants on the surface of the earth require the protection afforded by the trees. The soil is not rich in plant roots and stuff, so it glides in periods of rain.

THERA ARE  SEVERAL TYPES OF EROSION:

• Gravitational Erosion: It is the landslide down the rocks and sediments, mainly due to gravity. Mass movement is an important part of the erosion process as the material moves from higher elevations to lower places where other agents of erosion, such as rivers and glaciers can collect material and remove to places even lower.

• Rain Erosion: The rain erosion is the detachment and movement of small soil particles caused by the impact of raindrops on soil. This causes sheet erosion, is the detachment of soil particles by raindrop impact and downhill by removal of water flowing overland rather than definitive grooves or channels.

TWO STAGES:   

•  splashing rain: soil particles are knocked into the air by the impact of rain.

• loose particles: loose particles move downhill by large ground water flowing quickly silted.

•  fluvial erosio:  The fluvial erosion occurs mostly on coasts exposed and unprotected, and occurs primarily through the action of currents and waves, but the level of the tides may also play a role.

• erosion frost: Ice erosion can take one of two forms. It can be caused by the movement of ice, typically as glaciers, in a process called glacial erosion. It can also be due to the processes of freeze/ thaw in the water within the pores and fractures in the rock can extend cracking.

growth of the mountains

THE GROWTH OF THE MOUNTAINS

Vertical Fastest Growing Mountains than expected:

• Mountains can experience a "growth spurt" of growth that can double its height in such a short time geologically speaking as two to four million years, much faster than suggested by tectonic commonly accepted theory.

• The traditional method to estimate the growth of the mountains is by understanding the history of folding and some other specific processes in the upper crust of the Earth.

THERE ARE SEVERAL TYPES OF MOUNTAINS:

There are four major types of mountains:

• FOLDED MOUNTAIN: vary greatly in complexity, but are adjusted to the base rate. The Alps, Carpathians and Himalayas folded mountains form the most extensive in the world.

• BLOCK MOUNTAINS: are large-scale structures failed. Are formed by a deep fault or a very large horst molded by erosion.

• DOMES: are formed by the bulging of layers. By increasing the curvature, the surface is eroded and the core is exposed granite. When they are high up mountains and vast domed.

• VOLCANIC MOUNTAINS: grow visibly during eruptions. When her last growth has been recent, its shape is hardly affected by erosion.

Types of rocks

THE TYPE OF ROCKS

Rocks are natural aggregates (homogeneous systems) that occur on our planet in large masses. They consist of one or more minerals or mineral states.

• TYPES OF ROCKS:

Different types of rocks can be divided according to their origin, into three major groups:

• IGNEOUS: formed from the cooling of molten rock (magma). The magma can cool quickly on the surface of the earth by volcanic activity or slowly crystallize inside, causing large masses called plutonic rocks. When crystallized in bark crevices filonianas igneous rocks form the.

• METAMORPHIC: formed from other rocks, without mixing, have been subjected to high pressures and temperatures and transformed.

• SEDIMENTARY: formed in surface regions of the crust from materials deposited in layers or strata. They are detrital whether they originate from pieces of other rocks. Chemical and organic if formed from precipitation of chemical compounds or accumulation remains of living organisms.

My first post

welcome to mi blog;  in my blog I'm going to put a lot of information and many photos about it.

Add caption

we are going to talk about:

• The type of rocks.

• The growth of the mountains.

• why erosions occurs.