Answered

Valuable ore deposits and gem crystals are often associated with _____.

a. oceans

b.oil deposits

c. thin crustal areas

d. igneous intrusions

 

Which of the following shows a possible sequence that leads to the formation of sedimentary rocks?

a. squeezing, heating, bending, folding

b. rising, weathering, erosion

c. weathering deposition, compaction, cementation

d. melting, cooling, crystallization

 

PLZ HELP!! :)



Answer :

taskmasters
For the first question:
Valuable ore deposits and gem crystals are often associated with igneous intrusions. So for this question the correct option is option “d”. An example like the Pegmatite’s, which are a form of igneous intrusions, is responsible for the creation of variety of gems like topaz and tourmaline.
For the second question:
For this specific question, option “c” seems to be the correct option. Weathering, deposition, compaction, cementation are the possible sequence that leads to the formation of sedimentary rocks.





starstudentrb

Answer:

for the first one its D.

For the second one its C.

There you go.

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