BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Under the Volcano: Geological Fieldwork in East Greenland - Prof. 
 Marian Holness
DTSTART:20150303T181500Z
DTEND:20150303T191500Z
UID:TALK58239@talks.cam.ac.uk
CONTACT:George Fortune
DESCRIPTION:If we want to understand how volcanoes behave we need to know 
 what happens in the magma chambers that feed the eruptions. We can't direc
 tly access the magma stored under active volcanoes but we can take a look 
 at the deeply-eroded roots of ancient volcanoes. The east coast of Greenla
 nd is scattered with the remains of a vast outpouring of magma associated 
 with the opening of the North Atlantic some 60 million years ago. \nThe ex
 cellent exposure of the Skaergaard intrusion reveals a complex story of ba
 salt magma trapped underground\, with progressive solidification on the wa
 lls\, roof and floor forming crystal mushy layers and a gradual change in 
 the composition of the remaining magma. Detailed examination\, both in the
  field and back in the lab\, show how the process of fractionation actuall
 y works.\n
LOCATION:Winstanley Lecture Theatre
END:VEVENT
END:VCALENDAR