Geology flashcard

Front

What is the oldest Eon in Earth's history?

Back

Hadean Eon, which is approximately 4.5 billion years old.

Front

Why are dinosaur fossils found deeper in the ground than mammoth fossils?

Back

Dinosaur fossils are older and buried deeper due to geological processes.

Front

What significant geological period marks the beginning of rock formation?

Back

Hadean Eon, which began around 4 billion years ago.

Front

What is a fossil?

Back

The preserved remains or traces of ancient organisms.

Front

What are the key characteristics of the Cenozoic Era?

Back

Dominance of mammals and birds, development of flowering plants, significant geological changes, evolution of modern ecosystems.

Front

What Eon follows the Hadean Eon?

Back

Archean Eon.

Front

What is the significance of the Phanerozoic Eon?

Back

It is characterized by abundant fossil evidence and the development of complex life forms.

Front

What major event marks the end of the Mesozoic Era?

Back

The mass extinction event that led to the demise of the dinosaurs.

Front

What is the difference between a rock and a mineral?

Back

Rocks are composed of one or more minerals, while minerals are naturally occurring inorganic substances with a definite chemical composition.

Front

What is the process of fossilization?

Back

The process by which organic material is preserved in sedimentary rock over time.