Outputs (31)

New 40Ar/39Ar dating of the Antrim Plateau Volcanics, Australia: clarifying an age for the eruptive phase of the Kalkarindji continental flood basalt province (2018)
Journal Article
Marshall, P. E., Halton, A. M., Kelley, S. P., Widdowson, M., & Sherlock, S. C. (2018). New 40Ar/39Ar dating of the Antrim Plateau Volcanics, Australia: clarifying an age for the eruptive phase of the Kalkarindji continental flood basalt province. Journal of the Geological Society, 175(6), 974-985. https://doi.org/10.1144/jgs2018-035

The Kalkarindji flood basalt province of northern Australia erupted in the mid-Cambrian. Today, the province consists of scattered volcanic and intrusive suites, the largest being the Antrim Plateau Volcanics (APV) in Northern Territory. Accurate dat... Read More about New 40Ar/39Ar dating of the Antrim Plateau Volcanics, Australia: clarifying an age for the eruptive phase of the Kalkarindji continental flood basalt province.

Thallium concentration and thallium isotope composition of lateritic terrains (2018)
Journal Article
Howarth, S., Prytulak, J., Little, S. H., Hammond, S. J., & Widdowson, M. (2018). Thallium concentration and thallium isotope composition of lateritic terrains. Geochimica et cosmochimica acta, 239, 446-462. https://doi.org/10.1016/j.gca.2018.04.017

Continental weathering plays a key role in modifying the geochemical budget of terrestrial reservoirs. Laterites are the products of extreme sub-aerial continental weathering. This study presents the first investigation of thallium (Tl) abundances an... Read More about Thallium concentration and thallium isotope composition of lateritic terrains.

Th/U and U series systematics of saprolite: importance for the oceanic 234U excess (2018)
Journal Article
Suhr, N., Widdowson, M., McDermott, F., & Kamber, B. S. (2018). Th/U and U series systematics of saprolite: importance for the oceanic 234U excess. Geochemical Perspectives Letters, 6, 17-22. https://doi.org/10.7185/geochemlet.1803

The presence of excess 234U in seawater is a compelling argument for active delivery of solutes from the continents to the oceans. Previous studies found, however, that the complementary 234U deficit on the continents is surprisingly modest, which wo... Read More about Th/U and U series systematics of saprolite: importance for the oceanic 234U excess.

Elemental and isotopic behaviour of Zn in Deccan basalt weathering profiles: Chemical weathering from bedrock to laterite and links to Zn deficiency in tropical soils (2017)
Journal Article
Suhr, N., Schoenberg, R., Chew, D., Rosca, C., Widdowson, M., & Kamber, B. S. (2018). Elemental and isotopic behaviour of Zn in Deccan basalt weathering profiles: Chemical weathering from bedrock to laterite and links to Zn deficiency in tropical soils. Science of the Total Environment, 619-620, 1451-1463. https://doi.org/10.1016/j.scitotenv.2017.11.112

Zinc (Zn) is a micronutrient for organisms and essential for plant growth, therefore knowledge of its elemental cycling in the surface environment is important regarding wider aspects of human nutrition and health. To explore the nature of Zn cycling... Read More about Elemental and isotopic behaviour of Zn in Deccan basalt weathering profiles: Chemical weathering from bedrock to laterite and links to Zn deficiency in tropical soils.

Silicon and chromium stable isotopic systematics during basalt weathering and lateritisation: A comparison of variably weathered basalt profiles in the Deccan Traps, India (2017)
Journal Article
Wille, M., Babechuk, M. G., Kleinhanns, I. C., Stegmaier, J., Suhr, N., Widdowson, M., Kamber, B. S., & Schoenberg, R. (2018). Silicon and chromium stable isotopic systematics during basalt weathering and lateritisation: A comparison of variably weathered basalt profiles in the Deccan Traps, India. Geoderma, 314, 190-204. https://doi.org/10.1016/j.geoderma.2017.10.051

Global biomass production is fundamentally affected by the hydrological cycling of elements at the Earth's surface. Continental weathering processes are the major source for most bio-essential elements in marine environments and therefore affect prim... Read More about Silicon and chromium stable isotopic systematics during basalt weathering and lateritisation: A comparison of variably weathered basalt profiles in the Deccan Traps, India.

Sequence stratigraphy, chemostratigraphy and facies analysis of Cambrian Series 2 – Series 3 boundary strata in northwestern Scotland (2016)
Journal Article
FAGGETTER, L. E., WIGNALL, P. B., PRUSS, S. B., RAINE, R. J., NEWTON, R. J., JOACHIMSKI, M. M., SMITH, P. M., WIDDOWSON, M., Faggetter, L., Joachimski, M., Pruss, S., Raine, R., Smith, P., SUN, Y., & Wignall, P. B. (2018). Sequence stratigraphy, chemostratigraphy and facies analysis of Cambrian Series 2 – Series 3 boundary strata in northwestern Scotland. Geological magazine, 155(04), 1-13. https://doi.org/10.1017/s0016756816000947

Globally, the Series 2 – Series 3 boundary of the Cambrian System coincides with a major carbon isotope excursion, sea-level changes and trilobite extinctions. Here we examine the sedimentology, sequence stratigraphy and carbon isotope record of this... Read More about Sequence stratigraphy, chemostratigraphy and facies analysis of Cambrian Series 2 – Series 3 boundary strata in northwestern Scotland.

Submarine palaeoenvironments during Emeishan flood basalt volcanism, SW China: Implications for plume-lithosphere interaction during the Capitanian, Middle Permian ('end Guadalupian') extinction event (2015)
Journal Article
Jerram, D. A., Widdowson, M., Wignall, P. B., Sun, Y., Lai, X., Bond, D. P., & Torsvik, T. H. (2016). Submarine palaeoenvironments during Emeishan flood basalt volcanism, SW China: Implications for plume-lithosphere interaction during the Capitanian, Middle Permian ('end Guadalupian') extinction event. Palaeogeography, palaeoclimatology, palaeoecology, 441(1), 65-73. https://doi.org/10.1016/j.palaeo.2015.06.009

Plume-induced lithospheric uplift and erosion are widely regarded as key features of large igneous province (LIP) emplacement, as is the coincidence of LIP eruption with major extinction and oceanic anoxic events (OAE). The Emeishan LIP, which erupte... Read More about Submarine palaeoenvironments during Emeishan flood basalt volcanism, SW China: Implications for plume-lithosphere interaction during the Capitanian, Middle Permian ('end Guadalupian') extinction event.

The Giant Lavas of Kalkarindji: Rubbly pāhoehoe lava in an ancient continental flood basalt province (2015)
Journal Article
Marshall, P. E., Widdowson, M., & Murphy, D. T. (2016). The Giant Lavas of Kalkarindji: Rubbly pāhoehoe lava in an ancient continental flood basalt province. Palaeogeography, palaeoclimatology, palaeoecology, 441(1), 22-37. https://doi.org/10.1016/j.palaeo.2015.05.006

The Kalkarindji continental flood basalt province of northern Australia erupted in the mid Cambrian (c. 511-505Ma). It now consists of scattered basaltic lava fields, the most extensive being the Antrim Plateau Volcanics (APV) - a semi-continuous out... Read More about The Giant Lavas of Kalkarindji: Rubbly pāhoehoe lava in an ancient continental flood basalt province.

The early Danian hyperthermal event at Boltysh (Ukraine): Relation to Cretaceous-Paleogene boundary events (2014)
Book Chapter
Gilmour, I., Jolley, D., Kemp, D., Kelley, S., Gilmour, M., Daly, R., & Widdowson, M. (2014). The early Danian hyperthermal event at Boltysh (Ukraine): Relation to Cretaceous-Paleogene boundary events. In G. Keller, & A. C. Kerr (Eds.), Volcanism, Impacts, and Mass Extinctions: Causes and Effects (133-146). Geological Society of America. https://doi.org/10.1130/2014.2505%2806%29

The Boltysh meteorite impact crater formed in the Ukrainian Shield on the margin of the Tethys Ocean a few thousand years before the Cretaceous-Paleogene boundary and was rapidly filled by a freshwater lake. Sediments filling the lake vary from early... Read More about The early Danian hyperthermal event at Boltysh (Ukraine): Relation to Cretaceous-Paleogene boundary events.

A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India (2014)
Journal Article
Babechuk, M. G., Widdowson, M., Murphy, M., & Kamber, B. S. (2015). A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India. Chemical Geology, 396, 25-41. https://doi.org/10.1016/j.chemgeo.2014.12.017

High-precision high field strength element (HFSE: Zr, Hf, Nb, Ta, Th, U, W, Mo), Y/Ho, and Nd isotope chemostratigraphy of two contrasting Deccan Traps weathering profiles - an ancient, deeply weathered laterite, and a younger (Quaternary), more mode... Read More about A combined Y/Ho, high field strength element (HFSE) and Nd isotope perspective on basalt weathering, Deccan Traps, India.