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Geology Quiz: Rocks and Classification

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Questions and Answers

What is the study of rocks and their classification called?

Mineralogy

Petrology (correct)

Sedimentology

Geology

Which type of rock is formed from hardened lava or magma?

Sedimentary Rocks

Igneous Rocks (correct)

Crystalline Rocks

Metamorphic Rocks

What do petrologists primarily specialize in?

Studying fossils

Classifying minerals

Identifying flowers

Identifying rocks (correct)

Which rock is considered the original foundation rock forming the continents?

Granite Signup and view all the answers

What characterizes the texture of a rock?

The size and shape of rock particles Signup and view all the answers

What is the process that occurs after deposition and before cementation in the formation of sedimentary rocks?

Compaction Signup and view all the answers

Which of the following rocks is an example of a nonclastic or chemical sedimentary rock?

Limestone Signup and view all the answers

What leads to chemical precipitation in the context of sedimentary rock formation?

Evaporation of water or lowered temperature Signup and view all the answers

Which igneous rock is known for having gas bubbles that allow it to float?

Pumice Signup and view all the answers

Which of the following statements about sediments is true?

Sediments can be inorganic or organic in origin. Signup and view all the answers

What are source rocks?

Original, unaltered rocks Signup and view all the answers

What allows minerals to precipitate and form new rock types during metamorphism?

Cooling hydrothermal fluids Signup and view all the answers

Which of the following is a characteristic of foliated metamorphic rocks?

They exhibit a banded appearance due to layered minerals Signup and view all the answers

Which rock is classified as a non-foliated metamorphic rock?

Marble Signup and view all the answers

What is the primary cause of contact metamorphism?

Direct heat and pressure from nearby magma Signup and view all the answers

What type of rock is marble classified as?

Metamorphic rock Signup and view all the answers

What happens to limestone when it is exposed to acid rain?

It dissolves and erodes Signup and view all the answers

Which type of rock was formed first in geological history?

Igneous rock Signup and view all the answers

What process allows sedimentary rocks to potentially become magma?

Subduction Signup and view all the answers

Where does most of the sediment accumulate according to geologists?

In seas Signup and view all the answers