. . "Canadian geologist" . . . "2014Z"^^ . . "1924-04-25Z"^^ . . . . . "Jack Souther"@en . . . "Souther, Jack"@en . "2014-06-01Z"^^ . . "Jack Gordon Souther (April 25, 1924 \u2013 June 1, 2014) was an American-born Canadian geologist, volcanologist, professor and engineer. He contributed significantly to the early understanding of recent volcanic activity in the Canadian Cordillera. Many of his publications continue to be regarded as classics in their field, even now several decades after they were written."@en . . . . . . "1924Z"^^ .