Flett worked as a general practitioner for a short while after graduation, but in 1895 turned to geology for a career. He served as lecturer in Petrology at the University of Edinburgh, and as Petrographer (1901), assistant director (1911) and Director (1920–35) of the Geological Survey of Great Britain.[2]
Expeditions
Flett participated in several geological expeditions. He went with Tempest Anderson to observe the aftermaths of eruptions in the Caribbean in 1902 and 1907.[3]
Flett died in Ashdon, Essex and his headstone in the churchyard of All Saints' Church shows his date of birth as 25 May 1869 (a month earlier than the DOB given in the ODNB). Some of Flett's papers, relating to his time as student, are held at Edinburgh University.,[6] while the British Geological Survey holds an archive of his papers and correspondence from 1902 to 1944.
Family
Flett married Mary Jane 'Polly' Meason;[7] They had four children: Winifred Mary Flett (1899-1991), Enid Jean Flett (1903 - 1972), Harald Flett (5 Feb 1906 - 1981) and Sir Martin Teall Flett (30 July 1911 - 25 Feb 1982).
His granddaughter, the journalist Scarth Flett, was married to the Australian journalist, writer, scholar, and documentary filmmaker John Pilger.
Recognition
In the mid-1970s, the then new, glass-faced structure built in the grounds of the South Kensington Museums complex between the Geological Museum and the British Museum (Natural History) containing a lecture theatre, was named in his honour.