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SUMMARY:Treatment of energy and composition in models of magma/mantle dyna
 mics and implications for reactive flow - Richard Katz (University of Oxfo
 rd)
DTSTART:20160219T100000Z
DTEND:20160219T110000Z
UID:TALK64724@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:<span> <span>Co-authors: Tobias Keller (University of Oxford)\
 ,  Andrew Turner (University of Oxford)\, Samuel Weatherley (Geological  S
 urvey of Denmark and Greenland) <br></span></span><span><br>There are rela
 tively few theoretical studies of magma/mantle dynamics that  incorporate 
 conservation of energy and species mass in a consistent way. Doing  so rem
 ains a challenge\, both technically in terms of solving the equations\, an
 d  scientifically in terms of formulating them in a way that is both physi
 cally  reasonable and sufficiently simple. In this talk I review previous 
 and current  approaches to this problem. I highlight the importance of thi
 s treatment by  discussing the question of reactive channelisation of magm
 a. Reactive  channelisation is thought to be an important process in melt 
 transport\, helping  to explain some observed geochemical signals. It turn
 s out that the behaviour of  reactive-flow models depends in important way
 s on the way that energy and  composition are treated. I discuss how mantl
 e heterogeneity and the presence of  volatile elements may be essential fo
 r channelised flow. <br> <br>Related Links <ul> <li><a target="_blank" rel
 ="nofollow">http://www.foalab.earth.ox.ac.uk</a>  - My research group&#39\
 ;s home page.&nbsp\;</li></ul></span>
LOCATION:Seminar Room 1\, Newton Institute
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