John Maclennan

Conference Abstracts (*Invited Contibutions)

  • 2010
  • *Maclennan, J., Petrological constraints on the magmatic plumbing system of the Icelandic rift zones, Nordic Council Summer School, Eidar, Iceland, 2010
  • Winpenny, B., and Maclennan, J., Partial and Biased Preservation of the Mantle Signal in Icelandic Phenocryst Compositions, Goldschmidt, Knoxville, 2010
  • Shorttle, O., and Maclennan, J., Spreading Ridge Geometry Controls the Symmetry of Plume-Ridge Interaction, Goldschmidt, Knoxville, 2010
  • Mervine, E., Sims, K., Blichert-Toft, J., Maclennan, J., Blusztajn, J. and Gronvold, K., Temporal Isotope Variations in Glacial-Postglacial Lavas from Northern Iceland, Goldschmidt, Knoxville, 2010
  • *Maclennan, J., The petrological record of magmatic processes in the Icelandic crust, New Advances in Geophysics, Burlington House, London, 2010
  • Winpenny, B., and Maclennan, J., Mixing of mantle melts recorded in Icelandic phenocrysts: the significance of clinopyroxene stability in depleted compositions, Volcanic and Magmatic Studies Group meeting, Glasgow, 2010
  • Maclennan, J., Channelised melt transport and the extraction of mantle properties from basalt compositions, Volcanic and Magmatic Studies Group meeting, Glasgow, 2010
  • Collins, S.J., Pyle, D.M., Maclennan, J., Barnes, S.J. and Upton, B.G.J., Sulphide saturation and degassing in Reunion magmas, Volcanic and Magmatic Studies Group meeting, Glasgow, 2010
  • Nixon, S., Maclennan, J. and White, N., Neogene plume-related magmatism of the Al Haruj volcanic field, central Libya, Volcanic and Magmatic Studies Group meeting, Glasgow, 2010.
  • Sides, I, Edmonds, M., Maclennan, J. and 12 others, Volatiles in gases and melt inclusions erupted during the 2008-9 Halema’uma’u eruption of Kilauea volcano, Hawaii, Volcanic and Magmatic Studies Group meeting, Glasgow, 2010.
  • 2009
  • McKenzie, D.P. and Maclennan, J, The origin of Pb isotopic variations in Icelandic melt inclusions, AGU Fall Meeting, San Francisco, 2009.
  • Sides, I., Edmonds, M., Maclennan, J. and Swanson, D., Volatiles in Melt Inclusions from Kilauea Volcano, Hawai`i: Implications for Eruption Mechanisms and Source Heterogeneity, AGU Fall Meeting, San Francisco, 2009.
  • Winpenny, B., and Maclennan, J., Mixing of mantle melts recorded in Icelandic phenocrysts: the significance of clinopyroxene stability in depleted compositions, AGU Fall Meeting, San Francisco, 2009.
  • *Maclennan, J., Results from Superfast Spreading Crust Drilling, UK-IODP Symposium, Royal Society, London, 2010.
  • *Maclennan, J., Glacial modulation of volcanism in Iceland: Searching for mantle-climate feedback in the earth system, IGRM guest lecture, Dublin, 2009
  • 2008
  • *Maclennan, J., Interpreting the signal of mantle heterogeneity in Icelandic basalts, Fall AGU, San Francisco, 2008.
  • Maclennan, J., E. Passmore, G. Fitton, T, Thordarson, and B. Winpenny, Concurrent mixing and cooling of melts under Iceland, Fall AGU, San Francisco, 2008.
  • Roberts, G.G., White, N.J. and Maclennan, J., Dynamic uplift and drainage of Africa, Fall AGU, San Francisco, 2008.
  • Nixon, S., Maclennan, J., White, N. and Fishwick, S., Linking upper mantle processes and long-wavelength topographic swells in Cenozoic Africa, Fall AGU, San Francisco, 2008.
  • Collins, S.J., Pyle, D. and Maclennan, J., Degassing of volatiles and transport of semi-volatile trace metals at Piton de la Fournaise - 2007, Fall AGU, San Francisco, 2008.
  • Park, S., Maclennan, J., Teagle, D. and Hauff, F., Did the Galapagos plume influence the ancient EPR?: A geochemical study of basaltic rocks from Hole 1256D, Fall AGU, San Francisco, 2008.
  • *Maclennan, J., Short Length-scale compositional heterogeneity in basalts and their mantle sources, Goldschmidt, Vancouver, 2008.
  • Nixon, S., Maclennan, J., White, N. and Fishwick, S., Linking volcanism and long-wavelength domal swells in Cenozoic Africa, Fall AGU, San Francisco, 2008.
  • Maclennan, J., Mixing of melts under Iceland: Mantle channels and lower crustal magma chambers, IAVCEI, Reykjavik, 2008.
  • Winpenny, B. and Maclennan, J., Textural and compositional variation in gabbroic xenoliths from Icelandic basalts: melt mixing, crystallisation depth and feeding of basaltic eruptions, IAVCEI, Reykjavik, 2008.
  • *Maclennan, J. and A. Jezierska, The distribution of compositional heterogeneity in the Icelandic mantle, Volcanic and Magmatic Studies Group, Dublin, 2008.
  • Hartley, M. and J. Maclennan, Physical properties of postglacial basalts and their effects on magmatic processes under Iceland, Volcanic and Magmatic Studies Group, Dublin, 2008.
  • Walters, R.L., S.M. Jones, J. Maclennan and S. Park, Icelandic rift relocations: melting models and geochemical observations,  Volcanic and Magmatic Studies Group, Dublin, 2008.
  • 2007
  • Nisbet, E.G., S.M. Jones, J. Maclennan and G. Eagles, Triggering the Paleocene/Eocene Thermal Maximum: the Kilda Capacitor hypothesis, AGU Fall Meeting, San Francisco, 2007.
  • Walters, R.L., S.M. Jones, J. Maclennan and S. Park, Icelandic rift relocations: melting models and geochemical observations, AGU Fall Meeting, San Francisco, 2007.
  • Michalk, D., A. Muxworthy, H. Bohnel, J. Maclennan and N. Nowczyk, Evaluation of the multispecimen parallel differential pTRM method: A test on historical lavas from Iceland and Mexico, AGU Fall Meeting, San Francisco, 2007.
  • Collins, S., D. Pyle, J. Maclennan and T. Mather, Volcanic degassing of halogens and trace metals at Mt. Etna, Sicily - A melt inclusion investigation, AGU Fall Meeting, San Francisco, 2007.
  • *Maclennan, J.,  Models of oceanic crustal accreation and their relation to
    crystallisation depth models, Nordic Council Summer School on Geodynamics and Magmatic Processes, Myvatn, Iceland, 2007.
  • *Maclennan, J., Geochemical constraints on the link between glaciation and
    volcanism on Iceland, Nordic Council Summer School on Geodynamics and Magmatic Processes, Myvatn, Iceland, 2007.
  • *Maclennan J., M. Perfit, D. Fornari D, I. Ridley and A. Soule, Magmatic Architecture and Geochemical Variability at the 9°N Segment of the East Pacific Rise, Goldschmidt Conference, Cologne, 2007.
  • Passmore E, J. Maclennan, G. Fitton and T. Thordarson, Melt Mixing and Crystallisation in the Plumbing System of the 1783 Laki Eruption, Goldschmidt Conference, Cologne, 2007.
  • Collins, S., D. Pyle, J. Maclennan and T. Mather, Melt Inclusion Records of Degassing from Persistently Active Volcanoes: Etna, 2006, Goldschmidt Conference, Cologne, 2007.
  • Holness, M.B., A.T. Anderson, V. M. Martin, J. Maclennan, E. Passmore & K. Schwindinger, Textures in partially solidified crystalline nodules: a window into the pore structure of slowly cooled mafic intrusions, Volcanic and Magmatic Studies Group, Oxford, 2007
  • Maclennan, J., Melt mixing under Iceland, Volcanic and Magmatic Studies Group, Oxford, 2007
  • Collins, S., DM Pyle, J Maclennan and TA Mather, Outline petrology and geochemistry of recent lavas erupted from Mt Etna Volcanic and Magmatic Studies Group, Oxford, 2007
  • 2006
  • *Maclennan, J., The generation and destruction of compositional variation in Icelandic magma, Goldschmidt Conference, Melbourne, 2006.
  • Walters, R.L., S.M. Jones and J.C. Maclennan, Modelling geochemical variations associated with rift relocations at Iceland, Goldschmidt Conference, Melbourne, 2006.
  • Passmore, E., J. Maclennan and J.G. Fitton, Quantifying geochemical variation in basalt from Laki, southeast Iceland, IAVCEI George P.L. Walker symposium on Advances in Volcanology, Reykholt, Borgarfjordur, W-Iceland, 2006
  • *Maclennan, J., Petrological constraints on magmatic processes, Ridge 2000 Theoretical Institute 2006 (NSF workshop): Modeling Oceanic Spreading Center Hydrothermal Processes: Magma to Microbe, Mammoth Lakes, California, 2006.
  • Jones, S.M. and J.C. Maclennan, Regional uplift, gas hydrate dissociation and the origins of the Paleocene/Eocene Thermal Maximum, Climate and Biota of the Early Paleogene, Bilbao, 2006.
  • Walters, R.S., S.M. Jones and J.C. Maclennan, Understanding rift relocations at Iceland: a work in progress, 49th Irish Geological Research Meeting, Cork, 2006.
  • *Maclennan, J. (and IODP Expedition 309 and 312 science party ) Drilling a complete in situ section of upper oceanic crust formed at a superfast spreading rate: Hole 1256D, ECORD/ESSAC/IODP meeting, Cardiff, 2006.
  • Passmore, E., J. Maclennan and J.G. Fitton, Quantifying geochemical variation in basalt from Laki, southeast Iceland, Volcanic and Magmatic Studeis Group meeting, Leeds, 2006.
  • 2005
  • Khan, A., J. Maclennan, S. R. Taylor, K. Mosegaard, J. Gagnepain­Beyneix, P. Lognonne, Selenelogical tomography inferring the composition of the Moon from the Apollo lunar seismic data, mass and moment of inertia. Lunar and Planetary Science XXXVI, Houston, Texas, 2005.
  • 2004
  • Jones, S.M. and J.C. Maclennan, Crustal flow beneath Iceland: Implications for hotspot models and continental tectonics, 47th Irish Geological Research Meeting, Cork, 2004.
  • 2003
  • Maclennan, J., T. Hulme and S. Singh, Crustal accretion and cooling of the lower crust at fast-spreading ridges: Thermal models consistent with petrological and geophysical observations from active ridges and ophiolites, AGU Fall meeting, San Francisco, 2003.
  • Crawford, W.C., J. Maclennan and S. Singh, The lower crustal melt distribution within the East Pacific Rise, 9º30’N, from a combined study of compressional wave velocities and seafloor compliance data, AGU Fall meeting, San Francisco, 2003.
  • Jones, S.M., and J. Maclennan, Formation and significance of the Greenland-Iceland-Faroes Ridge: Importance of crustal flow, AGU Fall meeting, San Francisco, 2003.
  • Perfit, M., J. Maclennan, D. Fornari, I. Ridley, K. Sims and M. Smith, MORB Petrogenesis and crustal development of the East Pacific Rise (EPR) at the R2K ISS 9º-10ºN, AGU, 2003.
  • Maclennan, J., D. McKenzie, K. Gronvöld, N. Shimizu and J. Eiler, Melt mixing and crystallization under Theistareykir, NE Iceland, EGS-AGU-EUG, 2003.
  • Maclennan, J., T. Hulme and S. Singh, Thermal models of crustal accretion at fast spreading ridges: Reconciling geophysical and petrological observations, EGS-AGU-EUG, 2003.
  • Maclennan, J., B. Lovell, A. Halkett and N. White, Control of regional sea level by surface uplift and subsidence caused by magmatic underplating: Examples from Scotland and India, EGS-AGU-EUG, 2003.
  • Cannat, M., J. Maclennan and J. Cann, Using basalt compositions, seismic crustal thickness and regional axial depth to constrain the melt supply to mid-ocean ridges, EGS-AGU-EUG, 2003.
  • Perfit, M.R., D.J. Fornari, W.I. Ridley, J. Maclennan and K. Sims, High resolution geochemical and volcanological investigations of the East Pacific Rise (EPR) at 9◦-10◦N, EGS-AGU-EUG, 2003.
  • 2002
  • Cannat, M., J. Cann and J. Maclennan, Some hard rock constraints on the thermal regime of mid-ocean ridges, InterRidge Theoretical Institute, Pavia, 2002.
  • Maclennan, J. and S. Singh, The magmatic structure of mid-ocean ridges: integrating geophysical and geological observations, EGS XXVII, 2002.
  • Maclennan, J., D. McKenzie and K. Gronvöld, Plume driven upwelling under central Iceland, EGS XXVII, 2002.
  • 2001
  • Maclennan, J., D. McKenzie and K. Gronvöld, Geochemical and Geophysical Constraints on the location of magma chambers under NE Iceland, EUG XI, 2001.
  • Maclennan, J., D. McKenzie and K. Gronvöld, Comparing crustal accretion models from Iceland and Oman, International Conference Geology of Oman, 2001, Abstract Volume.
  • 2000
  • Maclennan, J., D. McKenzie, F. Hilton and K. Gronvöld, Geochemical variability in a single flow from NE Iceland, Goldschmidt 2000, Journal of Conference Abstracts, Vol 5, p 660, 2000.
  • 1999
  • Jull, M., D. McKenzie, J. Maclennan, L. Slater and K. Gronvöld, Melt generation and transport: Constraints from the deglaciation of Iceland, Goldschmidt 1999.
  • 1998
  • Maclennan, J., D. McKenzie, M. Jull and K. Gronvöld, The link between volcanism and deglaciation in Iceland, Godwin Institute for Quaternary Research, Quaternary Volcanism '98, Cambridge, 1998.
  • Maclennan, J., D. McKenzie, M. Jull and K. Gronvöld, Deglaciation and mantle melting: Observational constraints on magma extraction rates, The Geological Society, Geoscience 98, Keele University, Abstracts, 143, 1998.