Rock Record

Superposition is helpful in determining the

• absolute age of rock layers

• relative age of rock layers

• superposition of rock layers

• inclusions in rock layers

superposition

• principle that states geological processes that occur today are similar to those that occurred in the past

• principle that in undisturbed rock layers, the oldest rocks are at the bottom

• principle that if one geologic feature cuts across another feature, the feature it cuts across is older

• principle that most rock forming materials are deposited in horizontal layers

Tags

NGSS.MS-ESS1-4

cross-cutting relationships

• principle that states geological processes that occur today are similar to those that occurred in the past

• principle that in undisturbed rock layers, the oldest rocks are at the bottom

• principle that if one geologic feature cuts across another feature, the feature it cuts across is older

• principle that most rock forming materials are deposited in horizontal layers

original horizontality

• principle that states geological processes that occur today are similar to those that occurred in the past

• principle that in undisturbed rock layers, the oldest rocks are at the bottom

• principle that if one geologic feature cuts across another feature, the feature it cuts across is older

• principle that most rock forming materials are deposited in horizontal layers

inclusions

• a piece of an older rock that becomes part of a new rock

• the idea that most rock-forming materials are deposited in horizontal layers

• the preserved remains or evidence of past living organisims

• the age of a rock or object

Tags

NGSS.MS-ESS1-4

When looking at a rock that has an inclusion, which statement is true

• the inclusion is older than the surrounding rock

• the rock surrounding the inclusion is older

• both the inclusion and the surrounding rock formed at relatively the same time

Tags

NGSS.MS-ESS1-4

A scientist stated that rock layer C is the oldest and rock layer A is the youngest. Based on the scientist's conclusion, what can you infer about the geologic history of the rock layers?

• The fault line indicates the rock layers experienced an earthquake

• The rock layers did not experience any geologic disturbance because the layers are all horizontal

• C cannot be the oldest rock layer

• There is a younger intrusion

Tags

NGSS.MS-ESS1-4

The principle of superposition can be used to determine.

• the actual age of these rock layers

• the relative densities of these rock layers

• the actual temperatures of these rock layers

• the relative age of these rock layers

Tags

NGSS.MS-ESS1-4

The diagram shows a rock profile containing layers of different types of rock and igneous intrusions.

Which sequence lists the correct order of events in the area represented in the diagram?

• 1. Igneous intrusion Y formed.

  2. The shale layer was deposited.

  3. Igneous intrusion X formed.

  4. The limestone layer was deposited.

  5. The mudstone layer was deposited.

• 1. The mudstone layer was deposited.

  2. The limestone layer was deposited.

  3. The shale layer was deposited.

  4. Igneous intrusion Y cut into the mudstone, limestone, and shale.

  5. Igneous intrusion X cut into the mudstone, limestone, and shale.

• 1. Igneous intrusion X formed.

  2. Igneous intrusion Y formed.

  3. The shale layer was deposited.

  4. The limestone layer was deposited.

  5. The mudstone layer was deposited.

• 1. The layer of mudstone was deposited.

  2. The layer of limestone was deposited.

  3. Igneous intrusion Y cut into the mudstone and limestone.

  4. The shale layer was deposited.

  5. Igneous intrusion X cut into the mudstone, limestone, and shale.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

Simple fossils are found in older and younger rock layers while complex fossils are not found in the oldest layers. This shows

• Life started out as simple organisms and evolved to include more complex organisms over time.

• Life started out with complex organisms. This is shown in the rock layers.

• There are no fossils in the older layers, deep in the Earth's crust.

• Nobody knows why complex fossils aren't in the rock layers.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2