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!
Answer:
Arctic is degrading fast while antarctica is degrading slowly both by air and water.
Explanation:
- Its true that most of the arctic and the Antarctic ice sheets have melted and the earth surges steadily towards the dangerous wrath of the planet, various reports have given proof that the arctic ice or that of the north pole melting fast at an alarming rate as the altitudinal conditions and the impacts of the climate changes are more profound in this region.
- With the rise of temperature of more than 1.8° F, in the past decades, the temperature of this region the current rate of the greenhouse emission has destroyed about 90% of the ice that is left. And is projected to a 3.7° F rise as the threshold of the impact of man activities.
- <u>Antarctica, on the other hand, is not fast as arctic but thew studies have shown that is somewhat similar to average global warming. The antarctic absorbing up the heat from the southern ocean water bodies. Also in the past years, the invasion of species and the uneven cooling has led to 2 °C warming of the continent.</u>
Answer:
<h2>a globe is a round model of the earth. It shows Earth's shape and its lands. A map is a flat drawing of all or part of the earth's surface. Cartographers or mapmakers use complex mathematics to transfer shapes from the round globe to a flat map</h2>
Explanation:
