These notes have been compiled from teaching materials developed by John Hayes between 1980 and 1995. Since their goals are to introduce basic concepts and practices, they are not grossly outdated in spite of their antiquity. Where necessary or desirable, minimal revisions indicate more recent data and practices. The sections include: Practice and Principles of Isotopic Measurements in Organic ...

The prevalence of endemic goitre is extremely high in certain parts of Sri Lanka where rates as high as 44% have been observed. With nearly 10 million people at risk the aetiology of endemic goitre in Sri Lanka needs to be clearly ascertained. The endemic goitre belt of Sri Lanka coincides with the wet climatic zone, indicating an apparent relationship of iodine geochemistry with climatic facto...

Late in his exceptional career, well after he’d received the Nobel Prize for elucidating the pathway of carbon in photosynthesis, Melvin Calvin turned his attention to organic geochemistry. The progression was logical: from the pathway of carbon in a cell to the pathway of carbon in nature. In the former, there is an array of precise, enzymatic catalysts. The latter is actually a web of reactio...

Centre for Exploration Targeting, The University of Western Australia, M006, 35 Stirling Highway, Crawley, WA 6009, Australia; b School of Earth and Environment, The University of Western Australia, M006, 35 Stirling Highway, Crawley, WA 6009, Australia; Western Australian Organic and Isotope Geochemistry Centre, Curtin University, Perth, WA 6845, Australia; d The Institute of Earth Sciences, T...

The middle Sarvak formation (Cenomanian) is one of the stratigraphic units of the Bangestan group in the south of Iran. This formation is stratigraphically equivalent to the Ahmadi member of Kuwait and Iraq. There is geochemical evidence that indicates this unit has a high level of organic richness and can be a possible source rock in various locations. This study focuses on the organic geochem...