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Dr. Margaret Jackson

Assistant Professor (Geography)

 


My research focuses on how changes in climate are reflected in glacial landscapes. The causes of Earth's ice ages and their abrupt terminations are still uncertain, but are key to understanding our climate system and its capacity for (sometimes rapid) change.

Glaciers are highly sensitive to changes in climate. I study the traces that glaciers leave on Earth's surface as they grow and decay, and use these markers to reconstruct the timing and extent of past glacial fluctuations in regions around the globe. My goal is to use glacial-geomorphic records to understand the linkages between climate and glaciation, and to learn more about Earth's climate system in the past, present, and future.

This work involves detailed surface mapping, geochronology (surface-exposure dating, radiocarbon), and synoptic assessment of palaeoclimate and geomorphic records.

My research relies heavily on field work, and includes sites in Ireland, Iceland, Peru, Uganda, Greenland, and in the Antarctic.
  Climate Change   climate change impacts   GEOCHRONOLOGY   GEOGRAPHY   GEOMORPHOLOGY   Glacial Geology   PALAEOCLIMATE   Quaternary geology/ geomorphology   QUATERNARY STRATIGRAPHY
 Assessing the sensitivity of Ireland's glaciers to changing climate using paired glacial geomorphology and glaciologic modelling

Foreman, A., Bromley, G.R.M., Hall, B.H., and Jackson, M.S., A 10Be dated record of glacial retreat in Connemara, Ireland, after the Last Glacial Maximum and implications for regional climate, Palaeogeography, Palaeoclimatology, Palaeoecology, 2022, Journal Article, PUBLISHED  DOI
Garelick, S., Russell, J., Richards, A., Smith, J., Kelly, M. Anderson, N., Jackson, M.S., Doughty, A., Nakileza, B., and Ivory, S, Dynamics of warming during the last deglaciation in high-elevation regions of Eastern Equatorial Africa, Quaternary Science Reviews, 2022, Journal Article, PUBLISHED  DOI
Modeling glacier extents and equilibrium line altitudes in the Rwenzori Mountains, Uganda, over the last 31,000 yr in, editor(s)Richard B. Waitt, Glenn D. Thackray, Alan R. Gillespie , Untangling the Quaternary Period - A Legacy of Stephen C. Porter , 2021, [Doughty, A.M., Kelly, M.A., Russell, J.M., Jackson, M.S., Anderson, B.M., Chipman, J., Nakileza, B., and Dee, S.G], Book Chapter, PUBLISHED  DOI
Vickers, A.C., Shakun, J.S., Goehring, B.M., Gorin, A., Kelly, M.A., Jackson, M.S., Doughty, A.M., and Russell, J.M., Similar Holocene glaciation histories in tropical South America and Africa, Geology, (G48059), 2021, Journal Article, PUBLISHED  DOI
Jackson, M.S., Kelly, M.A., Russell, J.M., Doughty, A.M., Howley, J.A., Cavagnaro, Baber, M.B., D.B., Zimmerman, S.R.H., and Nakileza, B., Glacial fluctuations in tropical Africa during the last glacial termination and implications for tropical climate following the Last Glacial Maximum, Quaternary Science Reviews , 243C, (106455), 2020, Journal Article, PUBLISHED  DOI
Balter-Kennedy, A., Bromley, G., Balco, G., Thomas, H., and Jackson, M., A 14.5 million-year record of East Antarctic Ice Sheet fluctuations from the central Transantarctic Mountains, constrained with cosmogenic 3He, 10Be, 21Ne, and 26Al, The Cryosphere, 14, 2020, p2647 - 2672, Journal Article, PUBLISHED  DOI
Jackson, M.S., Kelly, M.A., Russell, J.M., Doughty, A.M., Howley, J.A., Chipman, J.W., Cavagnaro, D.B, Zimmerman, S.R.H., and Nakileza, B., High-latitude warming initiated the onset of the last deglaciation in the tropics, Science Advances, 5, (eaaw2610), 2019, Journal Article, PUBLISHED  DOI
Jackson, M.S., Hall, B.L., and Denton, G.H., Asynchronous behavior of the Antarctic Ice Sheet and local glaciers during and since Termination 1, Salmon Valley, Antarctica, Earth and Planetary Science Letters , 482, 2018, p396 - 406, Journal Article, PUBLISHED  DOI
Farnsworth, L.B., Kelly, M.A., Bromley, G.R.M., Axford, Y., Osterberg, E.C., Howley, J.A., Jackson, M.S., and Zimmerman, S.H., Holocene history of the Greenland Ice-Sheet margin in Northern Nunatarssuaq, Northwestern Greenland, Arktos, 4, (10), 2018, Journal Article, PUBLISHED  DOI
Bromley, G.R.M., Schaefer, J.M., Hall, B.L., Rademaker, K.M., Putnam, A.E., Todd, C.E., Hegland, M., Winckler, G., Jackson, M.S., and Strand, P.D., A cosmogenic 10Be chronology for the local last glacial maximum and termination in the Cordillera Oriental, southern Peruvian Andes: Implications for the tropical role in global climate., Quaternary Science Reviews, 148, 2016, p54 - 67, Journal Article, PUBLISHED  DOI
  

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Kelly, M.A., Bromley, G., Doughty, A., Jackson, M.S., Cunningham, M., Ruiz-Carrascal, D., Restrepo-Moreno, S.A., Herbert, J., Farnell, A.B., Russell, J.M, Garelick, S., Nakileza, B., Kaplan, M.R., and Hidy, A., The Last Glacial Maximum (LGM) and Termination 1 in the tropics based on glacial extent records, American Geophysical Union (AGU) Fall Meeting, New Orleans, Louisiana, 2021, Published Abstract, PUBLISHED
Foreman, A., Bromley, G., Hall, B., and Jackson, M., Abrupt climate change in the Irish cryospheric record, Irish Quaternary Association Autumn Symposium, 2021, Published Abstract, PUBLISHED
Garelick, S., Russell, J., Richards, A., Smith, J., Kelly, M.A., Anderson, N., Jackson, M.S., Doughty, A.M., Nakileza, B., and Ivory, S., Impact of temperature and tropical lapse rate variations on mountain environments of Eastern Equatorial Africa since the Last Glacial Maximum, American Geophysical Union (AGU) Fall Meeting, New Orleans, Louisiana, 2021, Published Abstract, PUBLISHED