Dating Rocks

What are the relative ages of the features in order from oldest to youngest?

• Limestone, Basalt, Fault, Siltstone

• Siltstone, Fault, Basalt, Limestone

• Limestone, Fault, Basalt, Siltstone

• Limestone, Siltstone, Fault, Basalt

Tags

NGSS.MS-ESS1-4

States that younger rocks lie above older rocks if the layers have not been disturbed

• Law of crosscutting

• Law of superposition

• Relative Dating

• Unconformity

Which of the following is the oldest?

• Layer L

• Intrusion D

• Intrusion H

• Layer E

Tags

NGSS.MS-ESS1-4

What is the oldest layer in the outcrop?

• B

• C

• D

• E

Tags

NGSS.MS-ESS1-4

​ (a)   is determining the actual ​ (b)   of an event or object in years. While ​ (c)   is the ​ (d)   of determining if one rock or ​ (e)   is older or younger than another, without knowing their specific ages like how many years ago the object was formed.

• Absolute dating

• age

• relative dating

• process

• geologic event

The diagram shows three sedimentary rock layers and an igneous intrusion.

What is the relative age of igneous intrusion W?

• Igneous intrusion W is younger than sedimentary rock layers Z and X, but its relative age to layer Y cannot be determined.

• Igneous intrusion W is younger than sedimentary rock layers Y and Z but older than layer X.

• Igneous intrusion W is older than sedimentary rock layers Z and X, but its relative age to layer Y cannot be determined.

• Igneous intrusion W is older than sedimentary rock layers Y and X but younger than layer Z.

Tags

NGSS.MS-ESS1-4

The diagram shows a geologic cross-section from a region.

What are the relative ages of the rocks from oldest to youngest ?

• W, V, X, Z, and Y

• W, Y, V, X, and Z

• W, V, X, Y, and Z

• W, V, Y, X, and Z

Tags

NGSS.MS-ESS1-4

The geologic cross section diagram shows undisturbed rock layers with index fossils from two regions (A and B). The two index species are identified in the index fossil key. Which answer option correctly describes the relative ages of the rock layers in the diagram?

• • Layer 6 is older than Layer 3.
  • Layer 2 is younger than Layer 4.

• • Layer 6 is older than Layer 3.
  • Layers 2 and 4 are the same age.

• • Layer 6 is younger than layer 3.
  • Layers 2 and 4 are the same age.

• • Layer is younger than layer 3.
  • Layer 2 is older than layer 4.

Tags

NGSS.MS-ESS1-4

Our earth is 4.6 billion years old. What do geologist use to date the rocks and fossils of the past?

• Geologic time scale

• Geologic rock scale

• Fossil time scale

• Rock geology scale

Tags

NGSS.MS-ESS1-4

Which layer is OLDER? Layer M or Intrusion P?

• Layer M

• Intrusion P

Tags

NGSS.MS-ESS1-4