Em P Jim Marshall PhD Professor Earth, Ocean and Ecological Sciences Work email Isotopes@liverpool.ac.uk Personal Websitehttp://www.liv.ac.uk/earth/ About Research Publications Teaching About Personal Statement I am a sedimentary geologist and geochemist. I am enthusiastic about both my teaching and my research. During my career I have worked on rocks from every continent and most geological time periods(ranging in age from the Precambrian to the Recent!).