Dr Tim Dempster

  • Senior Lecturer in Geology (School of Geographical & Earth Sciences)

Research interests

Tim Dempster

My research interests are focused on the use of minerals to reveal information on crustal processes.

  • Zircon as an indicator of low and medium grade metamorphic processes.
  • Garnet zoning and the role of diffusion processes in controlling metamorphic reractions.
  • Grain boundaries and the movement of fluids through the crust. The morphology of mineral surfaces as a guide to reaction history, palaeoporosity and deformation in crustal rocks.
  • Chemical zoning in accessory minerals as a monitor of crystallisation history.
  • The initial phases of orogenic evolution and links between surface processes and tectonics.

Current research

  • Zircon dissolution, recrystallization and growth during metamorphism
  • Using novel techniques to monitor fluid flow through the crust (Grain boundary analysis, Accessory mineral behaviour)
  • Development of granite textures with links to magma mixing and permeability changes during crystallization
  • Orogenic development and the spatial and temporal variability of geothermal gradients

In addition, I maintain active research interests in the following areas:

  • The kinetics of metamorphic reactions and the importance of chemical zoning in rock-forming minerals such as micas, in controlling equilibrium.
  • The use of thermochronology to monitor denudation histories in high elevation tectonic regions.
  • The geological evolution of crustal terranes in the Caledonides in the context of Late Proterozoic Earth history.

Grants

Shipton Z. K., Lawther S., Dempster T. and Boyce A. (SUERC). 2009-2010. Variability in fault architecture, mineralogy and fluid flow through faults in granite gneiss exhumed from seismogenic depths. NERC Isotope Geoscience Facility award IP-1156-1109, £43,200.

Persano, C. and Dempster, T.J. 2007. Constraints on the longevity of fluid flow in the crust from low temperature thermochronometry and numerical modelling., £10,000 (Royal Society London)

Persano, C. and Dempster, T.J. 2006-2007. The detection of fluid movements in the crust using low temperature thermochronology, £29,996 (Carnegie Trust for the Universities of Scotland)

Hoey, T. B.; Bishop, P.; Dempster, T.J. 2001. Inferring denudation history from He isotope and cosmogenic analysis of sediments, £10,034 (Leverhulme Trust). Co-Investigator F. Stuart (SUERC).


Supervision

Allan Hollinsworth (PhD candidate)


Teaching

 

Courses

  • Earth Sciences Level 1 Metamorphic rocks
  • Earth Sciences Level 1 Earth History
  • Earth Sciences Level 2 Global Tectonics
  • Earth Sciences Level 2 Metamorphic Processes
  • Earth Sciences Level 2 Minerals
  • Earth Sciences Level 2 Field skills
  • Earth Sciences Level 3 Metamorphism
  • Earth Sciences Level 3 Stratigraphy
  • Earth Sciences Level 4 Major Earth Processes
  • Earth Sciences Level 4 (option course) Orogens and Basins 

Earth Sciences Field Classes

  • Level 3 Mull (1 week residential course Oct)
  • Level 3 Oban (1 week residential course April)
  • Level 3 Stonehaven (Metamorphic Petrology L3), Corrieburn (Structural Geology L3)
  • Level 4 Southern Spain (12 day residential course March: Orogens and Basins option)

Additional information

Recent qualifications and recognition:

DSc (University of Glasgow) 2016

University of Glasgow Individual Teaching Excellence Awards (2008-9; 2013-14)

College of Science and Engineering Teaching Excellence Award (2013-14)

Senior Fellow of The Higher Education Academy (2016)

Senior Fellow - Recognising Excellence in Teaching (RET) (2016)

 

Administration roles:

Senior Adviser of Studies (Earth Science & Geology)

School Quality Assurance Officer (2013-present)

Responsible emplacement and development of the "Rock around the University" field teaching resource

External Examiner University of Aberdeen (2014-present)

External Examiner University of Leeds (2012-2015)

External Examiner University of Derby (2006-10)

School Director of Teaching and Learning (2008-2011)

Head of Earth Science Teaching programmes (2005-2013)

Chair of Honours Earth Science (2005-2013)

 

 


All publications

List by: Type | Date

Jump to: 2019 | 2018 | 2017 | 2016 | 2015 | 2013 | 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2000 | 1999 | 1997
Number of items: 35.

2019

Hollinsworth, A. D., Koehn, D. , Dempster, T. J. and Aanyu, K. (2019) Structural controls on the interaction between basin fluids and a rift flank fault: constraints from the Bwamba Fault, East African Rift. Journal of Structural Geology, 118, pp. 236-249. (doi:10.1016/j.jsg.2018.10.012)

2018

Dempster, T. J. , Gilmour, M. I. and Chung, P. (2018) The partial equilibration of garnet porphyroblasts in pelitic schists and its control on prograde metamorphism, Glen Roy, Scotland. Journal of Metamorphic Geology, (Accepted for Publication)

Faithfull, J. W. , Dempster, T. J. , MacDonald, J. M. , Reilly, M. and EIMF, (2018) Metasomatism and the crystallization of zircon megacrysts in Archaean peridotites from the Lewisian complex, NW Scotland. Contributions to Mineralogy and Petrology, (Accepted for Publication)

2017

Dempster, T. J. , La Piazza, J., Taylor, A. G., Beaudoin, N. and Chung, P. (2017) Chemical and textural equilibration of garnet during amphibolite-facies metamorphism: The influence of coupled dissolution-reprecipitation. Journal of Metamorphic Geology, 35(9), pp. 1111-1130. (doi:10.1111/jmg.12278)

Dempster, T. J. , Symon, S. and Chung, P. (2017) Intergranular diffusion rates from the analysis of garnet surfaces: implications for metamorphic equilibration. Journal of Metamorphic Geology, 35(6), pp. 585-600. (doi:10.1111/jmg.12247)

2016

Lawther, S. E.M., Dempster, T. J. , Shipton, Z. K. and Boyce, A. J. (2016) Effective crustal permeability controls fault evolution: An integrated structural, mineralogical and isotopic study in granitic gneiss, Monte Rosa, Northern Italy. Tectonophysics, 690(A), pp. 160-173. (doi:10.1016/j.tecto.2016.07.010)

Dempster, T.J. and Macdonald, F. (2016) Controls on fluid movement in crustal lithologies: evidence from zircon in metaconglomerates from Shetland. Geofluids, 16(3), pp. 507-517. (doi:10.1111/gfl.12172)

Faithfull, J. , Dempster, T. and Reilly, M. (2016) Giant Zircon Crystals in Ultramafic Rocks Within the Lewisian Complex: Occurrence and Implications. In: NAC+ 2016 : The North Atlantic Craton and Surrounding Belts: A Craton-Specific Approach to Exploration Targeting, Edinburgh, Scotland, 21-23 March 2016, (Unpublished)

2015

Dempster, T. and Jess, S. A. (2015) Ikaite pseudomorphs in Neoproterozoic Dalradian slates record Earth’s coldest metamorphism. Journal of the Geological Society, 172, pp. 459-464. (doi:10.1144/jgs2015-018)

2013

Dempster, T.J. and Chung, P. (2013) Metamorphic zircon: tracking fluid pathways and the implications for the preservation of detrital zircon. Journal of the Geological Society, 170(4), pp. 631-639. (doi:10.1144/jgs2012-063)

2011

McLeod, G.W., Dempster, T.J. and Faithfull, J.W. (2011) Deciphering magma-mixing processes using zoned titanite from the Ross of Mull granite, Scotland. Journal of Petrology, 52(1), pp. 55-82. (doi:10.1093/petrology/egq071)

2010

Dobson, K., Stuart, F. and Dempster, T. (2010) Constraining the post-emplacement evolution of the Hebridean Igneous Province (HIP) using low temperature thermochronology: How long has the HIP been cool? Journal of the Geological Society, 167(5), pp. 973-984. (doi:10.1144/0016-76492009-154)

Hay, D., Dempster, T., Lee, M. and Brown, D.J. (2010) Anatomy of a low temperature zircon outgrowth. Contributions to Mineralogy and Petrology, 159(1), pp. 81-92. (doi:10.1007/s00410-009-0417-2)

2009

Hay, D. and Dempster, T.J. (2009) Zircon alteration, formation and preservation in sandstones. Sedimentology, 56(7), pp. 2175-2191. (doi:10.1111/j.1365-3091.2009.01075.x)

Lawther, S.E.M. and Dempster, T. (2009) Apatite grain boundary morphology and its response to low-temperature fluid infiltration in crystalline basement. Geofluids, 9(3), pp. 224-236. (doi:10.1111/j.1468-8123.2009.00249.x)

Hay, D. and Dempster, T.J. (2009) Zircon behaviour during low-temperature metamorphism. Journal of Petrology, 50(4), pp. 571-589. (doi:10.1093/petrology/egp011)

Clark, S.J.P. and Dempster, T.J. (2009) The record of tectonic denudation and erosion in an emerging orogen: an apatite fission-track study of the Sierra Nevada, southern Spain. Journal of the Geological Society, 166(1), pp. 87-100. (doi:10.1144/0016-76492008-041)

2008

Dobson, K.J., Stuart, F.M. and Dempster, T.J. (2008) U and Th zonation in Fish Canyon Tuff zircons: implications for a zircon (U–Th)/He standard. Geochimica et Cosmochimica Acta, 72(19), pp. 4745-4755. (doi:10.1016/j.gca.2008.07.015)

Dempster, T.J., Martin, J.C. and Shipton, Z.K. (2008) Zircon dissolution in a ductile shear zone, Monte Rosa granite gneiss, northern Italy. Mineralogical Magazine, 72(4), pp. 971-986. (doi:10.1180/minmag.2008.072.4.971)

Dempster, T.J., Hay, D., Gordon, S.H. and Kelly, N.M. (2008) Micro-zircon: origin and evolution during metamorphism. Journal of Metamorphic Geology, 26(5), pp. 499-507. (doi:10.1111/j.1525-1314.2008.00772.x)

2007

Reinhardt, L.J., Bishop, P., Hoey, T.B. , Dempster, T.J. and Sanderson, D.C.W. (2007) Quantification of the transient response to base-level fall in a small mountain catchment: Sierra Nevada, southern Spain. Journal of Geophysical Research: Solid Earth, 112, F03S05. (doi:10.1029/2006JF000524)

Reinhardt, L.J., Dempster, T.J., Shroder, J.F. and Persano, C. (2007) Tectonic denudation and topographic development in the Spanish Sierra Nevada. Tectonics, 26(3), (doi:10.1029/2006TC001954)

Reinhardt, L.J., Hoey, T.B. , Barrows, T.T., Dempster, T.J., Bishop, P. and Fifield, L.K. (2007) Interpreting erosion rates from cosmogenic radionuclide concentrations measured in rapidly eroding terrain. Earth Surface Processes and Landforms, 32(3), pp. 390-406. (doi:10.1002/esp.1415)

2006

Dempster, T.J., Campanile, D. and Holness, M.B. (2006) Imprinted textures on apatite: A guide to paleoporosity and metamorphic recrystallization. Geology, 34(11), pp. 897-900. (doi:10.1130/G22299A.1)

Dempster, T.J. and Persano, C. (2006) Low-temperature thermochronology: Resolving geotherm shapes or denudation histories? Geology, 34(2), pp. 73-76. (doi:10.1130/G21980.1)

Bluck, B., Dempster, T., Aftalion, M., Haughton, P. and Rogers, G. (2006) Geochronology of a granitoid boulder from the Corsewall Formation (Southern Uplands): implications for the evolution of southern Scotland. Scottish Journal of Geology, 42, pp. 29-35.

2005

Persano, C., Stuart, F.M. , Bishop, P. and Dempster, T.J. (2005) Deciphering continental breakup in eastern Australia using low-temperature thermochronometers. Journal of Geophysical Research: Solid Earth, 110, B12405. (doi:10.1029/2004JB003325)

2004

Dempster, T., Hay, D. and Bluck, B. (2004) Zircon growth in slate. Geology, 32, pp. 221-224. (doi:10.1130/G20156.1)

2003

Brown, P., Dempster, T., Hutton, D. and Becker, S. (2003) Extensional tectonics and mafic plutons in the Ketilidian rapakivi granite suite of South Greenland. Lithos, 67, pp. 1-13. (doi:10.1016/S0024-4937(02)00212-8)

Dempster, T., Jolivet, M., Tubrett, M. and Braithwaite, C. (2003) Magmatic zoning in apatite: a monitor of porosity and permeability change in granites. Contributions to Mineralogy and Petrology, 145, pp. 568-577. (doi:10.1007/s00410-003-0471-0)

Jolivet, M., Dempster, T. and Cox, R. (2003) Distribution of U and Th in apatites: implications for U-Th/He thermochronology. Comptes Rendus Geoscience, 335, pp. 899-906. (doi:10.1016/j.crte.2003.08.010)

2002

Dempster, T.J. , Rogerson, G., Tanner, P.W.G., Bluck, B.J., Muir, R.J., Redwood, S.D., Ireland, T.R. and Paterson, B.A. (2002) Timing of deposition, orogenesis and glaciation within the Dalradian rocks of Scotland: constraints from U-Pb zircon ages. Journal of the Geological Society, 159(1), pp. 83-94.

2000

Dempster, T.J., Fallick, A.E. and Whittemore, C.J. (2000) Metamorphic reactions in the biotite zone, eastern Scotland: high thermal gradients, metasomatism and cleavage formation. Contributions to Mineralogy and Petrology, 138(4), pp. 348-363. (doi:10.1007/s004100050568)

1999

Dempster, T.J. , Preston, R.J. and Bell, B.R. (1999) The origin of Proterozoic massif-type anorthosites: Evidence from interactions between crustal xenoliths and basaltic magma. Journal of the Geological Society, 156(1), pp. 41-46.

1997

Bluck, B.J., Dempster, T.J. and Rogers, G. (1997) Allochthonous metamorphic blocks on the Hebridean passive margin, Scotland. Journal of the Geological Society, 154, pp. 921-924. (doi:10.1144/gsjgs.154.6.0921)

This list was generated on Tue May 21 07:34:30 2019 BST.
Number of items: 35.

Articles

Hollinsworth, A. D., Koehn, D. , Dempster, T. J. and Aanyu, K. (2019) Structural controls on the interaction between basin fluids and a rift flank fault: constraints from the Bwamba Fault, East African Rift. Journal of Structural Geology, 118, pp. 236-249. (doi:10.1016/j.jsg.2018.10.012)

Dempster, T. J. , Gilmour, M. I. and Chung, P. (2018) The partial equilibration of garnet porphyroblasts in pelitic schists and its control on prograde metamorphism, Glen Roy, Scotland. Journal of Metamorphic Geology, (Accepted for Publication)

Faithfull, J. W. , Dempster, T. J. , MacDonald, J. M. , Reilly, M. and EIMF, (2018) Metasomatism and the crystallization of zircon megacrysts in Archaean peridotites from the Lewisian complex, NW Scotland. Contributions to Mineralogy and Petrology, (Accepted for Publication)

Dempster, T. J. , La Piazza, J., Taylor, A. G., Beaudoin, N. and Chung, P. (2017) Chemical and textural equilibration of garnet during amphibolite-facies metamorphism: The influence of coupled dissolution-reprecipitation. Journal of Metamorphic Geology, 35(9), pp. 1111-1130. (doi:10.1111/jmg.12278)

Dempster, T. J. , Symon, S. and Chung, P. (2017) Intergranular diffusion rates from the analysis of garnet surfaces: implications for metamorphic equilibration. Journal of Metamorphic Geology, 35(6), pp. 585-600. (doi:10.1111/jmg.12247)

Lawther, S. E.M., Dempster, T. J. , Shipton, Z. K. and Boyce, A. J. (2016) Effective crustal permeability controls fault evolution: An integrated structural, mineralogical and isotopic study in granitic gneiss, Monte Rosa, Northern Italy. Tectonophysics, 690(A), pp. 160-173. (doi:10.1016/j.tecto.2016.07.010)

Dempster, T.J. and Macdonald, F. (2016) Controls on fluid movement in crustal lithologies: evidence from zircon in metaconglomerates from Shetland. Geofluids, 16(3), pp. 507-517. (doi:10.1111/gfl.12172)

Dempster, T. and Jess, S. A. (2015) Ikaite pseudomorphs in Neoproterozoic Dalradian slates record Earth’s coldest metamorphism. Journal of the Geological Society, 172, pp. 459-464. (doi:10.1144/jgs2015-018)

Dempster, T.J. and Chung, P. (2013) Metamorphic zircon: tracking fluid pathways and the implications for the preservation of detrital zircon. Journal of the Geological Society, 170(4), pp. 631-639. (doi:10.1144/jgs2012-063)

McLeod, G.W., Dempster, T.J. and Faithfull, J.W. (2011) Deciphering magma-mixing processes using zoned titanite from the Ross of Mull granite, Scotland. Journal of Petrology, 52(1), pp. 55-82. (doi:10.1093/petrology/egq071)

Dobson, K., Stuart, F. and Dempster, T. (2010) Constraining the post-emplacement evolution of the Hebridean Igneous Province (HIP) using low temperature thermochronology: How long has the HIP been cool? Journal of the Geological Society, 167(5), pp. 973-984. (doi:10.1144/0016-76492009-154)

Hay, D., Dempster, T., Lee, M. and Brown, D.J. (2010) Anatomy of a low temperature zircon outgrowth. Contributions to Mineralogy and Petrology, 159(1), pp. 81-92. (doi:10.1007/s00410-009-0417-2)

Hay, D. and Dempster, T.J. (2009) Zircon alteration, formation and preservation in sandstones. Sedimentology, 56(7), pp. 2175-2191. (doi:10.1111/j.1365-3091.2009.01075.x)

Lawther, S.E.M. and Dempster, T. (2009) Apatite grain boundary morphology and its response to low-temperature fluid infiltration in crystalline basement. Geofluids, 9(3), pp. 224-236. (doi:10.1111/j.1468-8123.2009.00249.x)

Hay, D. and Dempster, T.J. (2009) Zircon behaviour during low-temperature metamorphism. Journal of Petrology, 50(4), pp. 571-589. (doi:10.1093/petrology/egp011)

Clark, S.J.P. and Dempster, T.J. (2009) The record of tectonic denudation and erosion in an emerging orogen: an apatite fission-track study of the Sierra Nevada, southern Spain. Journal of the Geological Society, 166(1), pp. 87-100. (doi:10.1144/0016-76492008-041)

Dobson, K.J., Stuart, F.M. and Dempster, T.J. (2008) U and Th zonation in Fish Canyon Tuff zircons: implications for a zircon (U–Th)/He standard. Geochimica et Cosmochimica Acta, 72(19), pp. 4745-4755. (doi:10.1016/j.gca.2008.07.015)

Dempster, T.J., Martin, J.C. and Shipton, Z.K. (2008) Zircon dissolution in a ductile shear zone, Monte Rosa granite gneiss, northern Italy. Mineralogical Magazine, 72(4), pp. 971-986. (doi:10.1180/minmag.2008.072.4.971)

Dempster, T.J., Hay, D., Gordon, S.H. and Kelly, N.M. (2008) Micro-zircon: origin and evolution during metamorphism. Journal of Metamorphic Geology, 26(5), pp. 499-507. (doi:10.1111/j.1525-1314.2008.00772.x)

Reinhardt, L.J., Bishop, P., Hoey, T.B. , Dempster, T.J. and Sanderson, D.C.W. (2007) Quantification of the transient response to base-level fall in a small mountain catchment: Sierra Nevada, southern Spain. Journal of Geophysical Research: Solid Earth, 112, F03S05. (doi:10.1029/2006JF000524)

Reinhardt, L.J., Dempster, T.J., Shroder, J.F. and Persano, C. (2007) Tectonic denudation and topographic development in the Spanish Sierra Nevada. Tectonics, 26(3), (doi:10.1029/2006TC001954)

Reinhardt, L.J., Hoey, T.B. , Barrows, T.T., Dempster, T.J., Bishop, P. and Fifield, L.K. (2007) Interpreting erosion rates from cosmogenic radionuclide concentrations measured in rapidly eroding terrain. Earth Surface Processes and Landforms, 32(3), pp. 390-406. (doi:10.1002/esp.1415)

Dempster, T.J., Campanile, D. and Holness, M.B. (2006) Imprinted textures on apatite: A guide to paleoporosity and metamorphic recrystallization. Geology, 34(11), pp. 897-900. (doi:10.1130/G22299A.1)

Dempster, T.J. and Persano, C. (2006) Low-temperature thermochronology: Resolving geotherm shapes or denudation histories? Geology, 34(2), pp. 73-76. (doi:10.1130/G21980.1)

Bluck, B., Dempster, T., Aftalion, M., Haughton, P. and Rogers, G. (2006) Geochronology of a granitoid boulder from the Corsewall Formation (Southern Uplands): implications for the evolution of southern Scotland. Scottish Journal of Geology, 42, pp. 29-35.

Persano, C., Stuart, F.M. , Bishop, P. and Dempster, T.J. (2005) Deciphering continental breakup in eastern Australia using low-temperature thermochronometers. Journal of Geophysical Research: Solid Earth, 110, B12405. (doi:10.1029/2004JB003325)

Dempster, T., Hay, D. and Bluck, B. (2004) Zircon growth in slate. Geology, 32, pp. 221-224. (doi:10.1130/G20156.1)

Brown, P., Dempster, T., Hutton, D. and Becker, S. (2003) Extensional tectonics and mafic plutons in the Ketilidian rapakivi granite suite of South Greenland. Lithos, 67, pp. 1-13. (doi:10.1016/S0024-4937(02)00212-8)

Dempster, T., Jolivet, M., Tubrett, M. and Braithwaite, C. (2003) Magmatic zoning in apatite: a monitor of porosity and permeability change in granites. Contributions to Mineralogy and Petrology, 145, pp. 568-577. (doi:10.1007/s00410-003-0471-0)

Jolivet, M., Dempster, T. and Cox, R. (2003) Distribution of U and Th in apatites: implications for U-Th/He thermochronology. Comptes Rendus Geoscience, 335, pp. 899-906. (doi:10.1016/j.crte.2003.08.010)

Dempster, T.J. , Rogerson, G., Tanner, P.W.G., Bluck, B.J., Muir, R.J., Redwood, S.D., Ireland, T.R. and Paterson, B.A. (2002) Timing of deposition, orogenesis and glaciation within the Dalradian rocks of Scotland: constraints from U-Pb zircon ages. Journal of the Geological Society, 159(1), pp. 83-94.

Dempster, T.J., Fallick, A.E. and Whittemore, C.J. (2000) Metamorphic reactions in the biotite zone, eastern Scotland: high thermal gradients, metasomatism and cleavage formation. Contributions to Mineralogy and Petrology, 138(4), pp. 348-363. (doi:10.1007/s004100050568)

Dempster, T.J. , Preston, R.J. and Bell, B.R. (1999) The origin of Proterozoic massif-type anorthosites: Evidence from interactions between crustal xenoliths and basaltic magma. Journal of the Geological Society, 156(1), pp. 41-46.

Bluck, B.J., Dempster, T.J. and Rogers, G. (1997) Allochthonous metamorphic blocks on the Hebridean passive margin, Scotland. Journal of the Geological Society, 154, pp. 921-924. (doi:10.1144/gsjgs.154.6.0921)

Conference Proceedings

Faithfull, J. , Dempster, T. and Reilly, M. (2016) Giant Zircon Crystals in Ultramafic Rocks Within the Lewisian Complex: Occurrence and Implications. In: NAC+ 2016 : The North Atlantic Craton and Surrounding Belts: A Craton-Specific Approach to Exploration Targeting, Edinburgh, Scotland, 21-23 March 2016, (Unpublished)

This list was generated on Tue May 21 07:34:30 2019 BST.