Marie Adèle Pierre Jules Tissot

Marie Adèle Pierre Jules Tissot (10 September 1838 – 25 November 1883) was a French mining engineer and geologist.

He suspected the presence of deposits of phosphates in French North Africa, which were later discovered by the geologist Philippe Thomas.

[1] In 1873 Philippe Thomas, a young veterinary officer and geologist, found an exceptional limestone-marl zone in the Lower Eocene plateau at Aïn-Sba in the Fatah mountains south of Boghar.

[4] Between 1880 and 1884 Thomas published several papers on his Algerian research, and with Tissot investigated the Eocene formations in the Constantine region.

He drew on the observations of his predecessors Charles Dubocq, Oscar Linder and Gustave Moevus to create a geological map of Constantine Province, published in 1881.