I received my PhD degree from Columbia in 1958. Unlike several of Maurice Ewing’s geophysicists, who put in 5 to 10 years on the Lamont research staff before being offered a faculty position, once again Kulp performed his magic and, upon graduation, I was granted an assistant professorship in Columbia University’s Department of Geology. Nothing occurred during my first few years on the job that stands out in my memory so I’ll skip to 1962. Early in that year, John Imbrie, a fellow faculty member, asked me if I would like to join his group doing field research in the...

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