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SIZIF [17.4K]
3 years ago
11

A geologist finds a layer of rock that is made of coarse-grained foliated particles arranged into bands and splits into sheets w

hen struck with a hammer.
What type of rock did the geologist find?

A.
marble

B.
gneiss

C.
quartzite

D.
slate
Biology
2 answers:
ruslelena [56]3 years ago
4 0

Answer:

Option (B)

Explanation:

Gneiss is a metamorphic rock which forms due to the extremely high pressure and temperature condition. It is characterized by the coarse and medium-sized grains and there is the presence of alternating dark and light-colored bands on it. The light color band contains felsic minerals such as feldspar, quartz and the dark band contains mafic minerals such as biotite, hornblende, garnet. It is a very high-grade metamorphic rock. These characteristics helps in identifying a gneissic rock.

Thus, <u>the geologist found a gneissic rock</u>.

Hence, the correct answer is option (B).

const2013 [10]3 years ago
3 0
A geologist finds a layer of rock that is made of coarse-grained foliated particles arranged into bands and splits into sheets when struck with a hammer. The <span>type of rock did the geologist find is slate. The answer is letter D.</span>
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