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Department of Earth Sciences

- Early Solar System processes
- Hadean Earth geochemistry & the origin of life
- Biogeochemical cycles in deep time




My interests include early solar system processes, astrobiology and the co-evolution of surficial and deep planetary environments. I make use of petrographic, isotopic, experimental and statistical methods to tackle these research themes, with a current emphasis on nutrient cycling in deep time.


Key publications: 

Walton, C. R. et al., 2020 Prebiotic Chemistry in the Wild: How Geology Interferes with the Origins of Life. Chemrxiv.

Walton, C. R. et al., 2020 Formation and deformation of Phosphorus-Olivine-Assemblages in the Chelyabinsk chondrite, Arxiv.

Walton, C. R., Williams, H., & Shotddle, O (2020) The secret life of impact breccias: chondritic phosphate shock textures, Goldschmidt.

Walton, C. R., Cernok, A., & Anand, M. (2018) The formation and shock-history of phosphate minerals in Chelyabinsk (LL5), MAPS Special Edition: Abstracts from the 81stMeeting of the Meteoritical Society. [link]

Walton, C. R., Zerkle, A. L., Hazen, R. & Golden, J. (2018) Phosphorous fluxes over supercontinent cycles: perspectives from the Phosphorous Mineral Evolution Database (P-MED), Royal Society Earth Dynamics Meeting, March 2018.

Walton, C. R., Golden, J., Pasek, M., Hazen, R. (2018) Phosphorous mineralogy during the origin of life. Origins of Life GRS/C,Galveston, Texas, 2018.

Walton, C. R. & Anand, M. (2017) Chondritic meteorites: does rarity imply insignificance? 1st BPSC, DOI: 10.13140/RG.2.2.28993.66409. [link]

Walton, C. R. & Anand, M. (2017) Textural evidence for shock-related metasomatic replacement of olivine by phosphates in the Chelyabinsk chondrite, 48thLPSC, DOI: 10.13140/RG.2.2.19428.37769. [link]