Index fossils, horizontality, intrusion

Front

What is the Law of Original Horizontality?

Back

It states that sedimentary rocks are deposited in flat, horizontal layers.

Front

What does the Law of Superposition allow geologists to determine?

Back

It allows geologists to determine relative dates on geographic timelines.

Front

What is an intrusion in geology?

Back

An intrusion is a body of igneous rock that has formed by the cooling and solidification of magma beneath the Earth's surface.

Front

What does disturbance 'D' represent in geological terms?

Back

Disturbance 'D' represents an intrusion.

Front

What is the Law of Cross-Cutting Relationships?

Back

It states that a geological feature (like a fault or intrusion) that cuts through another is younger than the feature it cuts.

Front

What is the significance of index fossils in geology?

Back

Index fossils are used to identify and date the layers of rock in which they are found, indicating the relative age of the rock.

Front

What is the principle of uniformitarianism?

Back

It states that the processes that operate today also operated in the past, allowing us to understand Earth's history.

Front

What is the difference between relative dating and absolute dating?

Back

Relative dating determines the sequence of events, while absolute dating provides a specific age.

Front

What is a fault in geological terms?

Back

A fault is a fracture in the Earth's crust along which movement has occurred.

Front

What is sedimentary rock?

Back

Sedimentary rock is formed from the accumulation and compaction of mineral and organic particles.