Magmatic and Hydrothermal Processes at Mid-Ocean Ridges

Lecturers: Wolfgang Bach

Content:

In course work, we review of concepts of phase relations and geochemistry in mantle melting and magmatic crystallization as well as water-rock interactions hydrothermal system. We do repeated visits to the IODP core repository to examine core from different drill sites in the Atlantic. We read papers and solve problem sets in home work assignments.



Skills:

The ability to distinguish phase assemblages in hand specimen of oceanic rocks and derive information about the formation mechanism and condition from it. Interpret liquid lines of descent in terms of sequences of magmatic crystallization. Distinguish between different types and styles of hydrothermal alteration and work out mass balances of seawater-crust exchange.

Exam:

assignment

Literature:

- Open University Course Team, 1998, The oceanic basins: their structure and evolution, Butterworth & Heinemann
- W.R. Buck, P.T. Delaney, J.A. Karson & Y. Lagabrielle (eds.), 1998, Faulting and magmatism at mid-ocean ridges, Geophysical Monograph 106, American Geophysical Union
- R.A. Mills & K. Harrison (eds.), 1998, Modern ocean floor processes and the geological record, Geological Society Special Publications No. 148, London
- C.J. MacLeod, P.A. Tyler & C.L. Walker (eds.), 1996, Tectonic, magmatic, hydrothermal and biological segmentation of mid-ocean ridges, Geological Society Special Publications No. 118
- L.M. Parson, B.J. Murton & P. Browning (eds.), 1992, Ophiolites and their modern oceanic analogues, Geological Society Special Publications No. 60, London
- A.D. Saunders & M.J. Norry (eds.), 1989, Magmatism in the ocean basins, Geological Society Special Publications No. 42, London
- M.C. Best & E.H. Christiansen, 2001, Igneous petrology, Blackwell Science
- M. Wilson, 1989, Igneous petrogenesis, Chapmann & Hall, London

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