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SUMMARY:Understanding the Iceland mantle plume: Imaging deep Earth process
 es with seismic waves - Dr. Jennifer Jenkins\, Bullard Laboratories Univer
 sity of Cambridge
DTSTART:20191016T183000Z
DTEND:20191016T193000Z
UID:TALK131401@talks.cam.ac.uk
CONTACT:Tommy Tai
DESCRIPTION:Iceland sits on a mid-ocean ridge where two of the Earth's tec
 tonic plates are rifting apart. It is also thought to be underlain by a ma
 ntle plume -  a hot convective upwelling within the convecting system of t
 he Earth's mantle. Many unanswered questions remain about the detailed str
 ucture of the Iceland mantle plume - what is it's  depth extent\, structur
 e and composition? And  how does it effect volcanism and the formation of 
 new crust at the surface? \n\nHere I will present new images of seismic di
 scontinuities beneath iceland which can be used to infer plume characteris
 tics.  Results sheds new light on to the structure of the plume from crust
 al to mid-mantle depths (20-1000km)\, and have implications for the role s
 uch upwellings have within the large-scale convecting system  of the Earth
 's mantle. \n\nAbout the Speaker: Dr Jennifer Jenkins is a research associ
 ate at the Department of Earth Sciences in Cambridge. Her PhD research was
  on the deep Earth structure beneath Iceland\, and she is currently invest
 igating both this and shallower features\, such as the structure of the Ic
 elandic crust. An important part of her work involves assisting in the run
 ning and maintenance of the University of Cambridge's large network of sei
 smometers\, which are deployed across Iceland.\n\n(Follow @earthscicam for
  Twitter & @cambridgeeathsciences for Instagram)
LOCATION:Wolfson Lecture Theatre\,  Department of Chemistry\, Lensfield Ro
 ad
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