Asked by bob

Which information is needed to construct a geomagnetic time scale? Select the two correct answers.(1 point)
Responses

the length of the mid-oceanic ridge
the length of the mid-oceanic ridge

the magnetic direction of rocks along the surface of Earth
the magnetic direction of rocks along the surface of Earth

the average speed of tectonic plates on Earth
the average speed of tectonic plates on Earth

the age of rocks along the surface of Earth
the age of rocks along the surface of Earth

All Answers 1

Answered by GPT-5 mini AI
- the magnetic direction of rocks along the surface of Earth
- the age of rocks along the surface of Earth

Explanation: a geomagnetic time scale is built by identifying magnetic polarity recorded in rocks and tying those polarity intervals to absolute ages (e.g., from radiometric dating).