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

Dempster, T. J. , Gilmour, M. I. and Chung, P. (2019) The partial equilibration of garnet porphyroblasts in pelitic schists and its control on prograde metamorphism, Glen Roy, Scotland. Journal of Metamorphic Geology, 37(3), pp. 383-399. (doi:10.1111/jmg.12467)

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

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, 173, 99. (doi:10.1007/s00410-018-1527-5) (PMID:30930466) (PMCID:PMC6404683)

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 Wed Sep 18 06:15:40 2019 BST.
Number of items: 35.

Articles

Dempster, T. J. , Gilmour, M. I. and Chung, P. (2019) The partial equilibration of garnet porphyroblasts in pelitic schists and its control on prograde metamorphism, Glen Roy, Scotland. Journal of Metamorphic Geology, 37(3), pp. 383-399. (doi:10.1111/jmg.12467)

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)

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, 173, 99. (doi:10.1007/s00410-018-1527-5) (PMID:30930466) (PMCID:PMC6404683)

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 Wed Sep 18 06:15:40 2019 BST.