Question

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 1

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 2

Answer:

for the first one its D.

For the second one its C.

There you go.