Linked from
The 15 pages that link to Magnetostratigraphy, each with the reason it gives.
PaleomagnetismRelated: Applies the polarity record to build dated stratigraphic sequences.
Geomagnetic reversalRelated: Polarity changes provide recognizable markers in geological sequences.
LithostratigraphyCompared with: Magnetic polarity can correlate rocks across changes in lithology.
Geologic timeRelated: Polarity reversals provide a recognizable chronology independent of fossils.