Neil D. Opdyke

He was well known for his groundbreaking research in the 1950s on paleoclimate and continental drift, with Keith Runcorn, and later in Africa and Australia with Mike McElhinny[2] and others.

In 1969, Dr. Opdyke & Ken Henry used marine core data for a convincing test of the GAD hypothesis that is central to the use of paleomagnetism in continental reconstruction.

Opdyke’s work with Nick Shackleton in 1973 marked the beginning of the integration of oxygen isotope stratigraphy and magnetostratigraphy that has led to current methods of tuning timescales.

Neil pioneered magnetic stratigraphy in terrestrial (non-marine) sediments and produced some of the most impressive records, notably from Pakistan and southwestern United States.

These studies led to a vastly improved time frame for vertebrate evolution and allowed the documentation of mammal migration.