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!! :)

Verified Answer :

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.







Answer:

for the first one its D.

For the second one its C.

There you go.