Question

*Earth Systems* Help asap!!
Which information is needed to construct a geomagnetic time scale? Select the two correct answers.(1 point)
the age of rocks along the surface of Earth
the length of the mid-oceanic ridge
the magnetic direction of rocks along the surface of Earth
the average speed of tectonic plates on Earth

Answer 1

Explanation:

The Geomagnetic Polarity Time Scale is the list of the dates of the prior geomagnetic polarity reversal. It was constructed from the analysis of the magnetic abnormalities measured off the ocean basins and by tying these abnormalities to the dated and known magnetic reversal found on the land.