Geomagnetic Polarity Time Scale

By J. Ogg. Geologic Time Scale 2020, 2020

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Abstract: The patterns of marine magnetic anomalies for the Late Cretaceous through Neogene (C-sequence) and Middle Jurassic through Early Cretaceous (M-sequence with deep-tow extension) have been calibrated through magnetostratigraphic studies to biostratigraphy, cyclostratigraphy and selected radio-isotope-dated levels. The majority of the geomagnetic polarity time scale for the past 160 myr is constructed by fitting spreading-rate models to these constraints. The status of the geomagnetic polarity time scale for each geological period is summarized in the appropriate period chapters.

Subfields: Atmospheric Science, Geophysics, Molecular Biology

View Paper: https://www.semanticscholar.org/paper/aba87d6359428181536d5e2a5c11a4acee7b670f