Robert Millner Shackleton FRS[1] (30 December 1909 – 3 May 2001)[2] was a British field geologist who developed an interest in the geology of East Africa.
Born in Purley, Surrey, he was educated at the Quakers' Sidcot School in Somerset and the University of Liverpool, graduating BSc in geology with First Class Honours in 1930.
Boswell on the geology of the Moel Hebog area of Snowdonia in North Wales (PhD 1934), then won a Beit Fellowship at Imperial College, London, 1932–1934.
In 1942 the archaeologist Mary Leakey discovered prehistoric human artefacts at Olorgesailie, a lower Palaeolithic site southwest of Nairobi.
Of particular importance have been his work on Tertiary volcanics in Kenya, his understanding of the Pre-Cambrian of eastern and central Africa and his accounts of Dalradian structures and deposits".