Presentation on theme: "1 Iceland: What we know and what we don’t Gillian R. Foulger Durham University, U.K. Rift to Ridge ‘07 meeting, 28-29 June 2007 National Oceanography Centre,"— Presentation transcript:
1 Iceland: What we know and what we don’t Gillian R. Foulger Durham University, U.K. Rift to Ridge ‘07 meeting, 28-29 June 2007 National Oceanography Centre, Southampton Invited keynote talk
2 What we know and what we don’t is person-dependent
3 Is Iceland hot? T = 93˚C (Ribe et al., 1995) T = 0-200˚C (Foulger et al., 2000) T = 70-190˚C (Herzberg et al., 2007) T = 270˚C (Langmuir et al., 1992)
4 Is the Iceland “hotspot” a spot? Centre of “the” Iceland plume
5 “How does a hotspot influence the development of an oceanic basin…” How does breaking the law affect crime?
6 Other plume diagnostics Precursory uplift Initial LIP Time-progressive volcanic chain Deep mantle seismic anomaly
7 Uplift contemporaneous, fast, permanent Jones (2005) 0-200 m 500-800 m 400-900 m 420-620 m 180-425 m 0-100 m 380-590 m
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