What is the region found mostly north of the Arctic Circle

Describe the formation, characteristics, and minerals present of the following rocks:

SOVA2 [1]

Explanation:

Serpentine

Formation: it forms through serpentinization, a geological low-temperature metamorphic process where low-silica mafic and ultramafic rocks are oxidized and hydrolyzed with water into serpentinite.
Characteristics: rich in magnesium and water, light to dark green, greasy-looking and slippery feeling. It can resist the transfer of heat. A source of asbestos, architectural stone, ornamental stone, gem material
Minerals present: it follows the formula (X)2-3(Y)2O5(OH)4 where X can be magnesium, iron, nickel, aluminum, zinc, or manganese; and, Y will be silicon, aluminum, or iron.

Green Schist

Formation: they form by regional metamorphism of mafic igneous rocks through depth of burial, and proximity to batholiths.
Characteristics: The green is due to abundant green chlorite
Minerals present: actinolite and epidote mainly, but they can also include quartz, orthoclase, talc, carbonate minerals, and amphibole.

Basalt Pillow

Formation: it forms when lava of basaltic compositions erupted underwater. The rapid cooling of the lava forms the pillow-shaped bodies.
Characteristics: they are volcanic igneous rocks, very dark, almost black color.
Minerals present: Basalt has a lower percentage of silica and a higher percentage of iron and magnesium than other volcanic rocks.

Umber

Formation: it develops in Cyprus massive sulfide deposits.
Characteristics: is not one precise color, but a range of different colors, from medium to dark, from yellowish to reddish to grayish depending on the iron oxide and manganese in the clay
Minerals present: contains iron oxide and manganese oxide and sulfide precipitates like pyrite.

I hope you find this information useful and interesting! Good luck!

3 0

2 years ago

A multinational corporation is a company that is owned by at least two investors who live in different countries. true or false

Masja [62]

That answer would be false.

4 0

3 years ago

Example #4............

MrRissso [65]

We need a picture to ANWSER it

8 0

3 years ago

How scientists determine the different features of the Earth?

svlad2 [7]

Answer:

scientist can tell by observing the seismic waves that are recorded all over the surface of the earth from distant earthquakes

Explanation:

8 0

3 years ago

No Paraná existem atualmente três etnias indígenas:___________, ___________ e ____________. Elas vivem, em sua maioria, nas 17 t

Viefleur [7K]

Answer:

A opção B está correta.

Guarani, Kaingang e Xetá.

No Paraná existem atualmente três etnias indígenas: Guarani, Kaingang e Xetá. Elas vivem, em sua maioria, nas 17 terras indígenas demarcadas pelo governo federal, onde recebem assistência médica, odontológica e educação diferenciada bilíngue.

Explanation:

Pergunta Completa

No Paraná existem atualmente três etnias indígenas:___________, ___________ e ____________. Elas vivem, em sua maioria, nas 17 terras indígenas demarcadas pelo governo federal, onde recebem assistência médica, odontológica e educação diferenciada bilíngue.

a) Guarani, Pataxó e Potiguara.

b) Guarani, Kaingang e Xetá.

c) Ticuna, Guarani e Makushi

d) Terena, Guajajara e Xavante

O Paraná é um dos 26 estados do Brasil. É um estado no sul do Brasil e compartilha fronteiras com a Argentina. É popular por abrigar 3 das tribos indígenas populares no Brasil, incluindo Guarani, Kaingang e Xetá.

Espero que isto ajude!!!

6 0

3 years ago