What key details about ian graham gass  can be extracted from the following bio?  Bio: ian graham gass , frs , geologist , was professor of earth sciences and head of discipline at the open university , milton keynes and he was president of the iavcei -lrb- 1983 -- 87 -rrb- . he was married to mary pearce -lrb- 1955 , one son , one daughter -rrb- . at the close of the 1960s , a scientific revolution occurred changing the static geology into a dynamic earth science . by showing that the troödos mountains , cyprus is a remnant of seafloor spreading , ian gass collaborated in that transformation .
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