Jethro Teall

Sir Jethro Justinian Harris Teall ( born January 5, 1849 in Northleach, † July 2, 1924 in London) was a British geologist and petrologist, regarded in his time as one of the most respected British geologist.

Teall studied at the University of Cambridge at St. John 's College and was from 1875 to 1879 Fellow of his college. Teall was financially independent. He is best known as a pioneer of petrography in the UK and especially for his monograph on this subject, he was a Fellow of the Royal Society. In the 1880s he collaborated with Charles Lapworth, whose works from the geological survey of Scotland he imagined when he fell ill with mental illness. In 1888, he was brought by Archibald Geikie as an expert on metamorphic rocks in the British Geological recording ( Geological Survey ) for which he also much in Northwest Scotland mapped and was a Director in place of Geikie from 1901.

In 1905 he received the Wollaston medal. In 1874 he was awarded the Sedgwick Prize for research on the British Cretaceous green sandstone ( Lower Greensand ). In 1890 he became a Fellow of the Royal Society. He was three honorary doctorates (Dublin, Oxford, St Andrews ). In 1916 he was knighted for his work at the Geological Survey, he reformed organization. He was president of the Geological Society of London.

According to him, the mineral Teallit is named from the cylindrite group. In 1907, he identified the Moine Thrust with colleagues in Scotland and thrust belt, the first such identification at all.

Writings

• British Petrography - with special reference to the igneous rocks, London, Dulau & Co., 1888, Online