Law of Superposition

Front

What is the Law of Superposition?

Back

The Law of Superposition states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest layers are at the top.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of ancient organisms, often found in sedimentary rock.

Front

Which fossil is considered the oldest among Trilobite, Ammonite, Crinoid, and Gastropod?

Back

Trilobite is considered the oldest fossil among these options.

Front

What does the term 'rock layer' refer to?

Back

A rock layer refers to a distinct layer of rock that has formed over time, often containing fossils or minerals.

Front

What is an unconformity in geology?

Back

An unconformity is a break or gap in the geologic record that occurs when rock layers are eroded over time.

Front

Which rock layer is typically the youngest?

Back

The youngest rock layer is usually found at the top of the sequence.

Front

What is deposition in geology?

Back

Deposition is the process by which sediments settle out of a transporting medium, such as water or air, and accumulate in layers.

Front

What happens during the tilting of rock layers?

Back

Tilting of rock layers occurs when tectonic forces cause the layers to be tilted from their original horizontal position.

Front

What is the significance of studying rock layers?

Back

Studying rock layers helps scientists understand Earth's history, including the age of fossils and geological events.

Front

What is the difference between a fault and an unconformity?

Back

A fault is a fracture in rock where movement has occurred, while an unconformity is a gap in the geological record due to erosion.