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sineoko [7]
2 years ago
15

Zoom in and look at Sample F in detail. This igneous rock contains at least 50% of a dark greenish grey mineral that has been id

entified as calcium rich plagioclase. There is also about an equal amount of a dark greenish black mineral that forms a texture of interlocking crystals with the plagioclase. Thinking of Bowen's Reaction Series, the dark greenish black mineral would most likely be _________________________.
a. pyroxene (augite)
b. amphibole (hornblende)
c. biotite
d. muscovite
Geography
1 answer:
Drupady [299]2 years ago
5 0

Answer:

a. pyroxene (augite)

Explanation:

Pyroxene is a mineral which is found in igneous and metamorphic rocks of the earth crust. They are dark green in color. their formation needs high degree of temperature and high pressure. Pyroxene is made up of silicon as a major element but some elements also present in it such as Ca, Na, Mg, Fe, Al and Ti. Its chemical formula is (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6.

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When going from a depth of 5,000 meters in Earth to a depth of 2,500 meters, the temperature would . When going from a depth of
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Answer:

<em>1. When going from a depth of 5,000 meters in Earth to a depth of 2,500 meters, the temperature would </em><u><em>   decrease</em></u><u>   </u>

<em />

<em>2. When going from a depth of 4,000 meters in Earth to a depth of 6,000 meters, the pressure would </em><u><em>   in</em></u><u>crease   </u>

Explanation:

<em>1. When going from a depth of 5,000 meters in Earth to a depth of 2,500 meters, the temperature would __________.</em>

The temperature of the Earth interior progressively increases as you move toward the Earth's core, this deeper into the Earth.

The highest temperature in in the core (center) of the planet, and the profile of temperature goes from lower temperatures in the crust to higher temperatures in the core.

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