- CYCLE CONCEPTS OF PROCESS AND GEOLOGICAL
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- EXTERNAL POWER FROM THE PLANET.
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- external geological agents
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- SEDIMENTARY ROCKS
Concept and geological cycle process:
The geological cycle: the set of phenomena that affect the surface crust and mantle are considered to be chained process steps in time.
3 processes are considered:
Gliptogénesis : Destruction of relief, caused by the action of external agents
lithogenesis: Production of new types of rock materials: from the debris originated in gliptogénesis and materials incorporated in the mantle.
Orogeny: Formation of relief: uniqueness of mountain ranges, with all the accompanying phenomena;
All the above processes occur so simultaneous and permanent , worldwide. You have not completed a process to start another.
For their study will be divided into:
external geological processes
internal geologic processes
external geological processes
external geological modeling agents tending relief and destroy.
The single action external geological agents tend to level the earth, turning it into a vast plain, and over millions of years to come would have succeeded in acting.
external geological agents are
Erosion: The process of erosion of the soil intact rock (rock), per share exogenous geological processes such as surface water flows or glacial ice, wind or the action of living organisms.
transport: the drag of materials by surface currents of water and glacial ice, or wind action
Sedimentation: is the process by which solid material transported by ice, running water or wind, is deposited on the river bottom or in areas of lower energy.
internal geological processes:
have their main origin in the planet's internal heat, considering building, to be responsible for the formation of the relief.
can be of two types:
Slow movements:
The manifestation of domestic agents is in the form of slow movements or (orogenic).
Jerky:
Earthquakes and volcanoes, which also give rise to the formation of new minerals and rocks latter.
EYE!
External A Geologic Process (eg Transport) is the result of several geological agents external (eg water, air ..)
energy from an external source on the planet
SOL should fundamentally
occur where nuclear fusion reactions and comes in the form of electromagnetic waves :
can be:
Harmful for living
Visible
high frequency waves (heat)
gamma rays X, UV
(harmful to humans)
The gamma (γ) is a type of electromagnetic radiation, and therefore formed by photons produced by radioactive elements.
Because they possess high energy, gamma rays are a type of radiation can penetrate matter more deeply.
Given their high energy can cause serious damage to the cell nucleus, so they are used to sterilize medical equipment and foodstuffs.
designated X-rays of electromagnetic radiation, invisible, able to pass through opaque bodies and impress photographic film.
Rays UV:
invisible electromagnetic waves are high energy. released by the sun and some special lamps.
In small doses are needed to determine vitamin D, but in larger doses can damage the skin and eyes. The ozone layer of the atmosphere protects us from this radiation.
visible waves
They are perceived by our eyes and are used for photosynthesis
Infrared rays are the emission energy in the form of electromagnetic waves in the region of the spectrum located immediately after the red of the visible radiation.
Infrared radiation can be detected as heat.
Because of the distance from Earth to the Sun 150 million km only receive one-billionth of the energy released by this, but enough to ...
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Raising the atmospheric circulation. -
Raising the water cycle (simple sketch) -
Build waves and water currents. -
allow the existence of life
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