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Darya [45]
3 years ago
9

In general how does the characteristic mineral composition of a light colored igneous rock differ from that of a dark colored ro

ck
Geography
1 answer:
katovenus [111]3 years ago
4 0

Light colored igneous rock is called felsic, it  is high in quartz, muscovite mica, and orthoclase feldspar content.  Dark colored igneous rock is called mafic, and contains a lesser amount of silica along with olivine, pyroxene, amphibole, biotite mica, and plagioclase feldspa

<span>Light coloured igneous rocks (felsic) tend to have greater silica and aluminum content and a lower iron and magnesium content than dark (mafic) rocks.</span>
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An intrusion of magma along a bedsing plane is called what
Snezhnost [94]

The intrusion of magma along a bedding* plane is called a Batholith. The reason it would be Batholith is because it comes from a Greek Root word that stands for "<u>depth"</u>.  Which would stand for what happens down their in the earth which would be "Batho-lith".

<em><u>Hope this helps!</u></em>

5 0
3 years ago
How long was one day on earth when the earth just formed ?
saveliy_v [14]

Answer:

the day lasted 12 hours.

Explanation:

8 0
3 years ago
PLZ HURY ON A TIMER Which statements explain what happens at deep-ocean trenches? Check all that apply.
Marat540 [252]
The answer are: mountains are formed, crust become molten rock and denser plates slides under lighter plates.

Let's look into the options one by one:

Crust is formed.

-This is in correct.

-At the ocean trench, plates subducts and were destroyed. No process of construction occurs as it is located at a destructive plate boundary.

Mountains are formed.

- This is correct.

- As it is located in the destructive plate bondary, two plates collide and create compressional force. The lighter continential will be compressed and foldes up to form fold mountains. One of the examples is the Rocky Mountain.

Seafloor spreading occurs.

-This is incorrect.

- Seafloor spreading occurs at constructive plate boundaries, however ocean trench occurs at destructive plate boudary and thus seafloor spreading does not take place.

Crust becomes molten rock.

- This is correct.

- When ocean trench is formed, denser oceanic plate subducts under the less dense continental plate and meets the hot magma. The crust material will then melt under high temperature and become molten rock.

Denser plates slide under lighter plates.

- This is correct.

- At deep ocean trenches, denser oceanic plate slide under the lighter continential plate as it is located the destructive plate boundary.

It might not be on time, but I hope it helps explain the question. :)
5 0
3 years ago
According to the plate tectonic theory two forces were evolved in the process of mountain formation , what were the two forces?​
mr_godi [17]

According to the plate tectonic theory, thrusting and folding or orogenesis, are the two forces evolved in the process of mountain formation.

<h3>What is the significance of the plate tectonic theory?</h3>

Plate tectonic theory is a theory that relates to the geographical factors that lead to occur whenever there is a mountain formation process. It is one of the most important geographical theories on the mountain formation process. It states that the forces like orogenesis and thrusting take place during this process.

Therefore, the significance of the process evolved in the mountain formation according to the plate tectonic theory have been aforementioned.

Learn more about plate tectonic theory here:

brainly.com/question/8062825

#SPJ1

3 0
1 year ago
The movement of Earth's tectonic plates relate to many factors, including density differences in the plates and
zzz [600]

The correct answer is - B. convection currents in Earth's mantle.

The movement of the Earth's tectonic plates is driven by the convection currents. The convection currents appear in the mantle layer, and they are currents made out of molten metals with high temperature and very high pressures.

Those high temperatures and pressures have resulted in cracking the crust on the surface of the Earth, thus creating multiple tectonic plates, some very large, some very small.

The pressure from the convection currents is so high that it actually manages to move the plates in certain direction, making them collide/subduct, slide past one another, or move away from one another, shaping up the physical geography of our planet.

3 0
3 years ago
Read 2 more answers
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