"Integration of magnetostratigraphy, biostratigraphy, sequence stratigraphy, and isotope stratigraphy provides a means to decipher the temporal relationships among lithological, geophysical, and geochemical indications of sea-level changes. However, the importance of chronology in testing cause and effect relationships among inferred sea-level changes is often underestimated. Firm chronostratigraphic control is required to establish equivalency among events. The establishment of age equivalency

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... between two events does not prove cause, but rather constitutes a necessary condition for inferring causal relationships."--page 51.