Podcast
Questions and Answers
What is the main concept behind the law of superposition?
What is the main concept behind the law of superposition?
- Younger rocks are always layered on top of older rocks.
- The youngest rocks are at the bottom and the oldest rocks are at the top.
- The oldest rocks are at the bottom and the youngest rocks are at the top. (correct)
- The layers of rocks are always tilted at an angle.
How can you infer that an intrusion is younger than the rock layers it cuts across?
How can you infer that an intrusion is younger than the rock layers it cuts across?
- The intrusion would have fewer visible layers.
- The intrusion would be tilted at a different angle from the rock layers.
- The intrusion cuts across the existing rock layers without bending them. (correct)
- The intrusion would show signs of erosion.
What geological event could have caused a big unconformity as described in the text?
What geological event could have caused a big unconformity as described in the text?
- Meteorite impact
- Volcanic eruption
- Severe earthquake
- Glacial movement (correct)
What key idea states that sedimentary rocks are originally formed in horizontal layers?
What key idea states that sedimentary rocks are originally formed in horizontal layers?
In a scenario where a river erodes away existing rock layers and new sediment begins to accumulate, what geological process is exemplified?
In a scenario where a river erodes away existing rock layers and new sediment begins to accumulate, what geological process is exemplified?
What happened first in the formation of the landform?
What happened first in the formation of the landform?
According to the law of superposition, which layer would be the oldest in the formation?
According to the law of superposition, which layer would be the oldest in the formation?
What caused the folding and bending of the rock layers?
What caused the folding and bending of the rock layers?
What geological event would come after the deposition of layers 1-4 in the landform formation?
What geological event would come after the deposition of layers 1-4 in the landform formation?
Why are layers 6 and 7 at the top of the landform formation?
Why are layers 6 and 7 at the top of the landform formation?
What is the main principle of geology that states that the present is the key to the past?
What is the main principle of geology that states that the present is the key to the past?
What is a landform diagram?
What is a landform diagram?
Why is the law of original horizontality important in deducing geological history?
Why is the law of original horizontality important in deducing geological history?
What does studying a landform diagram help us understand?
What does studying a landform diagram help us understand?
Which term refers to the idea that natural laws have stayed consistent throughout Earth's history?
Which term refers to the idea that natural laws have stayed consistent throughout Earth's history?
