Research output per year
Research output per year
Personal profile
Research overview
My PhD project aims to investigate why the average silicon isotope composition of the continental crust has changed over time- particularly in response to the evolution of plate tectonics and Earth's hydrosphere. My MSc dissertation here at St Andrews in 2019, supervised by Dr. Paul Savage, revealed interesting Si isotope signatures in Archaean lithologies from southern West Greenland. To further explore these findings, this project focuses on ancient rocks (such as TTGs) as well as globally-sourced glacial diamictites from significant environmental intervals. Using Si isotope methods I hope to investigate the extent to which the silicon budget of the crust has been impacted by processes such as weathering, silicification, and subduction over Earth history.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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Collaborations and top research areas from the last five years
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Research output
- 3 Article
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Silicon isotopes in an Archaean migmatite confirm seawater silicification of TTG sources
Murphy, M. E., Macdonald, J. E., Fischer, S., Gardiner, N. J., White, R. W. & Savage, P. S., 1 Mar 2024, In: Geochimica et Cosmochimica Acta. 368, p. 34-49Research output: Contribution to journal › Article › peer-review
Open AccessFile -
The formation and aqueous alteration of CM2 chondrites and their relationship to CO3 chondrites: A fresh isotopic (O, Cd, Cr, Si, Te, Ti, and Zn) perspective from the Winchcombe CM2 fall
Greenwood, R. C., Findlay, R., Martins, R., Steele, R. C. J., Shaw, K. M. M., Morton, E., Savage, P. S., Murphy, M. E., Rehkämper, M., Franchi, I. A., Elliott, T., Suttle, M. D., King, A. J., Anand, M., Malley, J., Howard, K. T., Zhao, X., Johnson, D., Liu, M. ‐. & McCain, K. A. & 1 others, , 15 May 2023, (E-pub ahead of print) In: Meteoritics & Planetary Science. Early View, 24 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
Homogenising the upper continental crust: the Si isotope evolution of the crust recorded by ancient glacial diamictites
Murphy, M., Savage, P. S., Gardiner, N. J., Prave, T., Gaschnig, R. & Rudnick, R., 1 Aug 2022, In: Earth and Planetary Science Letters. 591, 117620.Research output: Contribution to journal › Article › peer-review
Open AccessFile
Datasets
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The co-evolution of Earth's crust and hydrosphere: a silicon isotope perspective (thesis data)
Murphy, M. (Creator) & Savage, P. S. (Supervisor), University of St Andrews, 19 Mar 2026
DOI: 10.17630/8dbc6243-84eb-40ce-ac2b-cb39199f79b2, https://doi.org/10.17630/sta/831
Dataset: Thesis dataset
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This is a preview of a draft dataset Silicon isotopes in an Archaean migmatite confirm seawater silicification of TTG sources
Murphy, M. (Creator), Mendeley Data, 2024
Dataset
Thesis
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The co-evolution of Earth's crust and hydrosphere: a silicon isotope perspective
Murphy, M. (Author), Savage, P. S. (Supervisor), Gardiner, N. J. (Supervisor) & Prave, A. R. (Supervisor), 13 Jun 2024Student thesis: Doctoral Thesis (PhD)