11. In 1905, he helped found the journal Economic Geology . 12. More interesting is the observation of Sigrid Clift, University of Texas Bureau of Economic Geology geologist. 13. Economic geology is studied and practiced by geologists.14. L . C . Graton occupied a pre-eminent position in economic geology for half a century. 15. His PhD was on the structure, stratigraphy and economic geology of the Bristol and Somerset Coalfields. 16. Half Zantop, a professor of economic geology , took frequent field trips to Mexico and South America. 17. The Houston center will be under the direction of the University's 93-year old Bureau of Economic Geology . 18. In 1907, he took the Chair of economic geology at the Sheffield Scientific School at Yale University. 19. In 1931 he published a paper in " Economic Geology " on the history of gem mining. 20. His work was in economic geology , the study of valuable metals such as copper, gold, and silver.
