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SUMMARY:Dispersed volcanism in East Africa-Arabia: evidence for a single\,
  active plume head - Chiara Civiero\, University of Trieste
DTSTART:20250205T140000Z
DTEND:20250205T150000Z
UID:TALK227026@talks.cam.ac.uk
CONTACT:Tom Merry
DESCRIPTION:Hot plumes rising from the Earth’s deep mantle are believed 
 to form broad plume heads beneath lithospheric plates\, causing uplift\, r
 ifting\, and volcanism. However\, the mechanisms governing plume-lithosphe
 re interactions remain poorly understood. Using seismic waveform tomograph
 y\, we image interconnected corridors of hot\, partially molten rock benea
 th the East Africa-Arabia region. These corridors\, underlying zones of up
 lift\, rifting\, and dispersed volcanism\, form an active plume head shape
 d like a three-pointed star.\nEruption ages\, seismic anisotropy\, and pla
 te reconstructions suggest this plume head evolved from south to north\, f
 ed by three deep mantle upwellings beneath Kenya\, Afar\, and the Levant. 
 The resulting large-scale mantle flow\, combined with subduction-driven fo
 rces\, drives the lateral motion of the Anatolian microplate and the dynam
 ic evolution of the Zagros orogen.\nOur findings demonstrate how plate tec
 tonics and mantle dynamics together govern regional kinematics and surface
  deformation. Star-shaped plume heads in thin-lithosphere corridors are es
 sential features of plume-continent interactions\, shedding light on the d
 ispersed volcanism observed in large igneous provinces\, both past and pre
 sent.
LOCATION:Wolfson Lecture Theatre
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