John-Clay Purves

John-Clay Purves MD (30 January 1825–26 July 1903) was a British geologist and museum curator.

Biography Purves initially qualified in medicine at the University of Edinburgh before joining the army and travelling as an army doctor. He resigned this post in 1880 following his appointment to the Geological Survey of Belgium.

In his subsequent geological career he is attributed with naming the Namurian; a stage in the regional stratigraphy of northwest Europe with an age between roughly 326 and 313 Ma (million years ago).

Publications PURVES, J.C., 1881. 'Sur la délimitation et la constitution de l’étage houiller inférieur de la Belgique'. Bulletin de l’Académie royale de Belgique, Classe des Sciences, 3° série, 2: 514–568. PURVES, J.C., 1883. 'Terrain houiller'. In: Dupont, E.; Mourlon, M. & Purves, J.C., Explication de la feuille de Natoye. Musée royal d’Histoire naturelle, Explication de la Carte géologique du Royaume: 1–50