Relative Age Dating

What is an Intrusion in geology?

• A body of igneous rock formed from magma that has cooled and solidified beneath the Earth's surface.

• A type of sedimentary rock formed from compressed organic material.

• A volcanic eruption that occurs when magma reaches the Earth's surface.

• A geological fault where two tectonic plates meet.

How can you determine the relative age of rock layers?

• By examining their position, fossils, and any geological features like intrusions or unconformities.

• By measuring the temperature of the rocks.

• By analyzing the chemical composition of the rocks.

• By counting the number of layers present.

What is the Law of Superposition?

• In undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.

• The process by which sedimentary rocks are formed from molten magma.

• The principle that states all rocks are formed at the same time.

• A law that describes the movement of tectonic plates.

What does the presence of a fossil in a rock layer indicate?

• The rock layer containing the fossil is older than the layers above it.

• The rock layer containing the fossil is younger than the layers above it.

• The fossil is a sign of volcanic activity in the area.

• The fossil indicates that the rock layer is part of a sedimentary formation.

Which layer is older: Intrusion M or Layer D?

• Intrusion M is older than Layer D.

• Layer D is older than Intrusion M.

• Both layers are the same age.

• Layer D is younger than Intrusion M.

Which rock layer in a diagram is typically the oldest?

• The top layer is usually the oldest.

• The middle layer is usually the oldest.

• The bottom layer is usually the oldest.

• The layer with the most fossils is usually the oldest.

What is the principle of Original Horizontality?

• Layers of sediment are originally deposited horizontally under the action of gravity.

• Sedimentary layers are always deposited at an angle due to tectonic activity.

• All geological layers are formed from volcanic activity.

• Sediments are deposited in a vertical manner due to water flow.

What role do fossils play in relative dating?

• Fossils help to correlate rock layers and determine their relative ages based on the organisms they contain.

• Fossils are used to date rocks using radiometric techniques.

• Fossils provide information about the chemical composition of rocks.

• Fossils are primarily used to identify the mineral content of sedimentary layers.

What is Relative Dating?

• A method used to determine whether an object is older or younger than other objects.

• A technique for dating fossils using carbon-14.

• A process of determining the exact age of an artifact.

• A way to measure the distance between geological layers.

What is the oldest type of rock?

• Basalt

• Granite

• Conglomerate

• Limestone