1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vaselesa [24]
3 years ago
11

Describe the four processes of magma differentiation.

Geography
1 answer:
andrezito [222]3 years ago
6 0

Answer:

the four processes of magma differentiation are starting with Fractional crystallization , Assimilation , Replenishment and Magma mixing.

Explanation:

Magma differentiation -

It is also called igneous differentiation , is a kind of combination term for the various processes involved in the chemical change by which magmas undergoes bulk changes during cooling , emplacement , partial melting process or eruption .

The process involved has been called the FARM process , i.e , starting with Fractional crystallization , Assimilation , Replenishment and Magma mixing.

Fractional crystallization of igneous rocks

This is the most important geochemical process that is working inside the Earth's crust and the mantle . This process of segregation and removal from the melt of the mineral precipitates , that can change the composition of the melt .

The process is complex in context as it varies by a wide variety of phenomena , that are , temperature , composition and the pressure .

Assimilation -

This process explains the mafic magmas as it get rise from the crust and the felsification of the ultramafic . The assumption involved in this process is that the hot primitive melt intrudes into a cooler and the felsic crust will melt crust and get mixed with the resulting melt , which in turns alters the composition of primitive magma .

Replenishment  -

During the process of the cooling of the melt , the results are limited so as to produce a solid body of intrusive rock , which is homogeneous in nature and which has uniform composition and mineralogy . This is due to -

The fresh magma can change the melt's composition ,and the fresh magma can destabilizes the minerals , even change in temperature can lead to rapid crystallization .

Magma mixing  -

The composition in between of two end - member magma is achived by combining two magma's and forming a single composition.

This is a common process in the volcanic magma chambers , that are a open - system chambers , and magma under goes various processs of assimilation , fractional crystallization , and partial melt extraction and are replenished . Even this process is operated deep in the crust and is one of the primary mechanism for the formation of the rocks like monzonite and andesite .

Rate of cooling impact crystal size -

Crystals are formed by the cooling of the magma ,

There are two types of cooling possible , rapid cooling and slow cooling , both can lead to different types of crystal .

If the magma is cooled quickly , i.e. , rapid cooling , the crystals will not have time to form , hence are small in size ,

And in case the magma is cooled slowly , the crystals will have ample amount to time to grow in size , and , hence will form larger crystals .

If the igneous rock has large crystals , then it indicates that the rock was formed deep inside the earth , because deep inside the earth , it is warmer .

These are called intrusive rocks, and have a phaneritic texture .

If the igneous rock has small crystals , then it is formed by rapid cooling , near the Earth's surface .  These are called extrusive rocks and have an aphanitic texture .

You might be interested in
The Galapagos Islands were formed from underwater volcanic activity. The islands initially were barren, supporting no life, and
Ivahew [28]

Answer: True

Explanation: the theory of the island biogeography equilibrium modem describes that species have to get to a certain island from somewhere else which is the immigration part and other species have to migrate from the island as they run out of resources which is the extinction part. This theory shows that as the number of immigration increases and a new place is colonized the rate of extinction of species increases because there is more competition and limited resources for these species and vice versa.

7 0
3 years ago
How do we solve the problem of urban sprawl?
SCORPION-xisa [38]
We can solve it bu:
1 Education:One of the biggest problems concerning urban sprawl is lack of education. ...
2 Community Action.
The community can be a solution to urban sprawl through involvement and action.
3 Smart Growth.
4 New Urbanism.
8 0
2 years ago
In the late 1940s the Soviet Union took control of Poland and established a?
anygoal [31]
A dictator is the answer is because it is
3 0
3 years ago
how do location near the coast and prevailing wind patterns affect climate in the southern united states
Sunny_sXe [5.5K]

The southern part of the United States is heavily influenced by the sea/ocean and the wind patters that occur because of it. The warm waters that surround the region are making it more stable temperature-wise and the weather is warm and wet for big portions of the year. The precipitation is high as well. But this also brings in problems in the shape of the hurricanes, tornadoes, intense big rainstorms, and floods.

6 0
3 years ago
What have scientists used to build a chronology of earths past
eduard
Hi,

Scientists have used rock samples to date the Earth's past. They also might use Steno's principles. 

Relative dating is the determination of the age of a rock or geological event by comparing with other rock/ geologic events. Absolute dating is a form of geologic dating that gives an actual date or age in history that the item was formed or died in years. 

Steno's principles are: 

Law of superposition - Bottom layer is the oldest, top layer of the youngest In undisturbed layers of sedimentary rock or magma.

Original horizontally - When sedimentary rock layers form, they are "created in a horizontal form.

The Principle of Lateral Continuity -<span> States that layers of sediment initially extend </span>laterally<span> in all directions.


Faith xoxo



</span>
5 0
3 years ago
Other questions:
  • Based on the physical features you see on this map, why do you think the timber and logging industry is located where it is?
    15·2 answers
  • What’s the missing numbers in __,13,25,__,__ ?
    12·1 answer
  • "!PLEASE HELP, I WILL GIVE BRAINLEST!" (23 POINTS)
    14·2 answers
  • How was western central Europe able to produce hydroelectric power?
    10·1 answer
  • Weathering is usually a very:tiring process dangerous process slow process rapid process
    8·1 answer
  • Which of these is an example of how the ocean influences climate? (3 points)
    8·2 answers
  • Q.4. Explain the Mesosphere under the following headings:
    12·1 answer
  • How does cultural convergence change a society?
    13·1 answer
  • Conglomerate rocks are usually form
    12·2 answers
  • The emblem on the flag of the Republic of Tajikistan features a sunrise over mountains below what symbol? Help me!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!