All Outputs (7)

Fractionation of rhenium isotopes in the Mackenzie River basin during oxidative weathering (2021)
Journal Article
Dellinger, M., Hilton, R. G., & Nowell, G. M. (2021). Fractionation of rhenium isotopes in the Mackenzie River basin during oxidative weathering. Earth and Planetary Science Letters, 573, Article 117131. https://doi.org/10.1016/j.epsl.2021.117131

Rhenium (Re) is a trace element whose redox chemistry makes it an ideal candidate to trace a range of geochemical processes. Here, we report the first rhenium isotopic measurements (Re) from river-borne materials to assess the influence of chemical w... Read More about Fractionation of rhenium isotopes in the Mackenzie River basin during oxidative weathering.

Measurements of rhenium isotopic composition in low-abundance samples (2020)
Journal Article
Dellinger, M., Hilton, R. G., & Nowell, G. M. (2020). Measurements of rhenium isotopic composition in low-abundance samples. Journal of Analytical Atomic Spectrometry, 35(2), 377-387. https://doi.org/10.1039/c9ja00288j

Rhenium (Re) is a trace element whose redox chemistry makes it an ideal candidate to trace a range of geochemical processes. In particular, fractionation of its isotopes 187Re (62.6% abundance) and 185Re (37.4%) may be used to improve our understandi... Read More about Measurements of rhenium isotopic composition in low-abundance samples.

Weathering fluxes and sediment provenance on the SW Scottish shelf during the last deglaciation (2017)
Journal Article
Arosio, R., Crocket, K. C., Nowell, G. M., Louise Callard, S., Howe, J. A., Benetti, S., …Clark, C. D. (2018). Weathering fluxes and sediment provenance on the SW Scottish shelf during the last deglaciation. Marine Geology, 402, 81-98. https://doi.org/10.1016/j.margeo.2017.08.017

The reconstruction of past ice sheet dynamics can shed a light on long-term ice stream activity, and in turn provide constraints on the response of modern ice sheets to climate change. The Hebrides Ice Stream (HIS) flowed across part of the western S... Read More about Weathering fluxes and sediment provenance on the SW Scottish shelf during the last deglaciation.

High precision osmium stable isotope measurements by double spike MC-ICP-MS and N-TIMS (2017)
Journal Article
Nanne, J., Millet, M., Burton, K., Dale, C., Nowell, G., & Williams, H. (2017). High precision osmium stable isotope measurements by double spike MC-ICP-MS and N-TIMS. Journal of Analytical Atomic Spectrometry, 32(4), 749-765. https://doi.org/10.1039/c6ja00406g

Osmium stable isotopes provide a new, potentially powerful tool with which to investigate a diverse range of geological processes including planetary formation, ore-genesis and weathering. In this paper, we present a new technique for high precision... Read More about High precision osmium stable isotope measurements by double spike MC-ICP-MS and N-TIMS.

Osmium isotope compositions of detrital Os-rich alloys from the Rhine River provide evidence for a global late Mesoproterozoic mantle depletion event (2016)
Journal Article
Dijkstra, A., Dale, C., Oberthür, T., Nowell, G., & Pearson, D. (2016). Osmium isotope compositions of detrital Os-rich alloys from the Rhine River provide evidence for a global late Mesoproterozoic mantle depletion event. Earth and Planetary Science Letters, 452, 115-122. https://doi.org/10.1016/j.epsl.2016.07.047

We report osmium isotopic compositions for 297 mantle-derived detrital Ru–Os–Ir alloy grains found in gold and platinum-group mineral bearing placers of the Rhine River. These alloys were likely formed as a result of high degree melting in the convec... Read More about Osmium isotope compositions of detrital Os-rich alloys from the Rhine River provide evidence for a global late Mesoproterozoic mantle depletion event.

Titanium stable isotope investigation of magmatic processes on the Earth and Moon (2016)
Journal Article
Millet, M., Dauphas, N., Greberb, N., Burton, K., Dale, C., Debret, B., …Williams, H. (2016). Titanium stable isotope investigation of magmatic processes on the Earth and Moon. Earth and Planetary Science Letters, 449, 197-205. https://doi.org/10.1016/j.epsl.2016.05.039

We present titanium stable isotope measurements of terrestrial magmatic samples and lunar mare basalts with the aims of constraining the composition of the lunar and terrestrial mantles and evaluating the potential of Ti stable isotopes for understan... Read More about Titanium stable isotope investigation of magmatic processes on the Earth and Moon.

Community differentiation and kinship among Europe's first farmers (2012)
Journal Article
Bentley, R., Bickle, P., Fibiger, L., Nowell, G., Dale, C., Hedges, R., …Whittle, A. (2012). Community differentiation and kinship among Europe's first farmers. Proceedings of the National Academy of Sciences, 109(24), 9326-9330. https://doi.org/10.1073/pnas.1113710109

Community differentiation is a fundamental topic of the social sciences, and its prehistoric origins in Europe are typically assumed to lie among the complex, densely populated societies that developed millennia after their Neolithic predecessors. He... Read More about Community differentiation and kinship among Europe's first farmers.