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SBL024 Global Geochemical Cycles 6.0 ECTS credits | |
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TIMEPERIOD: Quarter II LANGUAGE:English/Swedish EXAMINER Anders Widerlund Univ lekt PREREQUISITES SBL001, SBL013, SBL023 COURSE AIM The aim of the course is to give basic knowledge of the geochemistry of estaurine and seawater and the geochemical processes regulating water quality and how the global geochemical cycles has regulated the composition of the oceans and the atmosphere during geological time. CONTENTS Geochemistry of eustaries and marginal marine environments: Classification of eustaries. Geochemical processes in the mixing zone between fresh- and brackish water. Polluted coastal sediments. Porewater geochemistry and the exchange of elements between sediment and water. Geochemistry of the Baltic Sea. Geochemistry of the oceans: The chemical composition of seawater. Deep-sea sediments. Submarine weathering. Deep-sea hydrothermal activity. Biological processes, the formation of carbonate and diatom ooze. Chemical budgets for individual elements in the ocean. The applications of stable isotopes in enviromental geochemistry: The distribution of hydrogen, oxygen, carbon and sulphur isotopes in natural waters. Examples of environmental studies using isotopes. Global geochemical cycles: The global geochemical cycles for carbon, nitrogen, sulphur and oxygen are discussed. The regulation of carbon dioxide and oxygene during geological time is dicussed. The chemical composition of the atmosphere. Geochemical pathways during the development of the atmosphere. TEACHING Lectures. EXAMINATION Written examination and compulsory assignment. COURSE GRADE SCALE: U, 3, 4, 5 ITEMS/CREDITS | |
| Written exam | 6.00ECTS |
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COURSE LITERATURE Butcher, S.S., Charlson, R.J., Orians, G.H. and Wolfe, G.V. (Eds.): Global Biogeochemical Cycles, 1992. REMARKS Further information: International Office |
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