Outputs (25)

Expedition 391 Preliminary Report : Walvis Ridge Hotspot: drilling Walvis Ridge, Southeast Atlantic Ocean, to test models of ridge hotspot interaction, isotopic zonation, and the hotspot reference frame (2022)
Report
Widdowson, M., Sager, W., Hoernle, K., Höfig, T. W., Avery, A. J., Bhutani, R., …Tshiningayamwe, M. (2022). Expedition 391 Preliminary Report : Walvis Ridge Hotspot: drilling Walvis Ridge, Southeast Atlantic Ocean, to test models of ridge hotspot interaction, isotopic zonation, and the hotspot reference frame. International Ocean Discovery Program (IODP)

Hotspot tracks (quasilinear chains of seamounts, ridges, and other volcanic structures) provide important records of plate motions, as well as mantle geodynamics, magma flux, and mantle source compositions. The Tristan-Gough-Walvis Ridge (TGW) hotspo... Read More about Expedition 391 Preliminary Report : Walvis Ridge Hotspot: drilling Walvis Ridge, Southeast Atlantic Ocean, to test models of ridge hotspot interaction, isotopic zonation, and the hotspot reference frame.

New mammals from the Naskal intertrappean site and the age of India's earliest eutherians (2022)
Journal Article
Wilson Mantilla, G. P., Renne, P. R., Samant, B., Mohabey, D. M., Dhobale, A., Tholt, A. J., …Wilson Mantilla, J. A. (2022). New mammals from the Naskal intertrappean site and the age of India's earliest eutherians. Palaeogeography, palaeoclimatology, palaeoecology, 591, Article 110857. https://doi.org/10.1016/j.palaeo.2022.110857

The first Cretaceous mammals described from India were recovered from the Naskal locality, on the southeastern edge of the Deccan Traps Volcanic Province (DTVP), where it is preserved between two basalt flows. Because the DTVP eruptions spanned the C... Read More about New mammals from the Naskal intertrappean site and the age of India's earliest eutherians.

New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment (2021)
Journal Article
Tian, Y., Spicer, R. A., Huang, J., Zhou, Z., Su, T., Widdowson, M., …Zhang, S. (2021). New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment. Earth and planetary science letters, 565, Article 116929. https://doi.org/10.1016/j.epsl.2021.116929

The sedimentary basins of Yunnan, Southwest China, record detailed histories of Cenozoic paleoenvironmental change. They track regional tectonic and palaeobiological evolution, both of which are critically important for the development of modern flor... Read More about New early oligocene zircon U-Pb dates for the ‘Miocene’ Wenshan Basin, Yunnan, China: Biodiversity and paleoenvironment.

The role of pedogenesis and natural fertiliser as vectors for essential metal content in agricultural topsoils, Central India (2021)
Journal Article
Suhr, N., Widdowson, M., & Kamber, B. S. (2021). The role of pedogenesis and natural fertiliser as vectors for essential metal content in agricultural topsoils, Central India. SN Applied Sciences, 3(1), Article 40. https://doi.org/10.1007/s42452-020-03982-7

© 2021, The Author(s). Essential trace metals are well known for their environmental toxicity and for being part of complex bio-chemical cycles. Their role as critical micronutrients, delivering vital health benefits, is less widely discussed and und... Read More about The role of pedogenesis and natural fertiliser as vectors for essential metal content in agricultural topsoils, Central India.

A Middle Eocene lowland humid subtropical "Shangri-La" ecosystem in central Tibet (2020)
Journal Article
Su, T., Spicer, R. A., Wu, F. X., Farnsworth, A., Huang, J., Del Rio, C., …Zhou, Z. K. (2020). A Middle Eocene lowland humid subtropical "Shangri-La" ecosystem in central Tibet. Proceedings of the National Academy of Sciences of the United States of America, 117(52), 32989-32995. https://doi.org/10.1073/pnas.2012647117

Copyright © 2020 the Author(s). Published by PNAS. Tibet's ancient topography and its role in climatic and biotic evolution remain speculative due to a paucity of quantitative surface-height measurements through time and space, and sparse fossil reco... Read More about A Middle Eocene lowland humid subtropical "Shangri-La" ecosystem in central Tibet.

The composition of the middle Miocene (15 Ma) Namling paleoflora, South Central Tibet, in the context of other Tibetan and Himalayan Floras (2019)
Journal Article
Shuang-Xing, G., Spicer, R. A., Widdowson, M., Herman, A. B., & Domogatskaya, K. V. (2019). The composition of the middle Miocene (15 Ma) Namling paleoflora, South Central Tibet, in the context of other Tibetan and Himalayan Floras. Review of palaeobotany and palynology, 271, Article 104088. https://doi.org/10.1016/j.revpalbo.2019.06.011

Molecular phylogeneticists often find that a diversification of western Chinese plant taxa took place in the Miocene and link this to the Neogene uplift of the Tibetan Plateau. This link is made despite abundant geological evidence showing that a hig... Read More about The composition of the middle Miocene (15 Ma) Namling paleoflora, South Central Tibet, in the context of other Tibetan and Himalayan Floras.

Cu and Zn isotope fractionation during extreme chemical weathering (2019)
Journal Article
Little, S. H., Munson, S., Prytulak, J., Coles, B. J., Hammond, S. J., & Widdowson, M. (2019). Cu and Zn isotope fractionation during extreme chemical weathering. Geochimica et cosmochimica acta, 263, 85-107. https://doi.org/10.1016/j.gca.2019.07.057

Copper and Zn are trace metal micronutrients whose stable isotope systematics are receiving increasing attention as possible paleoenvironmental tracers. However, to realise this potential, their behaviour during chemical weathering must be better con... Read More about Cu and Zn isotope fractionation during extreme chemical weathering.

Mercury chemostratigraphy across the Cambrian Series 2 – Series 3 boundary: evidence for increased volcanic activity coincident with extinction? (2019)
Journal Article
Faggetter, L. E., Wignall, P. B., Pruss, S. B., Jones, D. S., Grasby, S., Widdowson, M., & Newton, R. J. (2019). Mercury chemostratigraphy across the Cambrian Series 2 – Series 3 boundary: evidence for increased volcanic activity coincident with extinction?. Chemical Geology, 510, 188-199. https://doi.org/10.1016/j.chemgeo.2019.02.006

Flood basalt volcanism represented by the Kalkarindji Province (Australia) is temporally associated with a trilobite mass extinction at the Cambrian Series 2 – Series 3 boundary, providing one of the oldest potential links between volcanism and bioti... Read More about Mercury chemostratigraphy across the Cambrian Series 2 – Series 3 boundary: evidence for increased volcanic activity coincident with extinction?.

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.