Weimu Xu

Weimu Xu

Visiting fellow

Research Profile

My research topic is “Carbon burial in continental and marine settings: records of major environmental changes in deep time and their depositional and diagenetic consequences”. I mainly focus on the lacustrine shale deposits in the Early Jurassic of China and the marine mudrock deposits in the Early Jurassic of the UK. I apply a range of laboratory and field works in the area of sedimentology, stratigraphy, isotope and organic geochemistry, and palaeobotany. The ultimate aim is to test the extent to which major climatic and palaeoceanographic events known from the marine realm, such as the Mesozoic Oceanic Anoxic Events, had a predictable impact on depositional and diagenetic history in large inland lakes.

Recently, I was a NERC Knowledge Exchange Fellow working with the UK Department for Business, Energy and Industrial Strategy on energy and climate change topics.

Media coverage:

University of Oxford Science blog
Department of Earth Sciences news

Xu, Weimu, Ruhl, M., Jenkyns, H.C., Hesselbo, S.P., Riding, J.B., Selby, D., Naafs, B.D.A., Weijers, J.W.H., Pancost, R.D., Tegelaar, E.W., Idiz, E.F., 2017. Carbon sequestration in an expanded lake system during the Toarcian Oceanic Anoxic Event. Nature Geoscience, 10, 129–134.


Xu, Weimu, Ruhl, M., Hesselbo, S.P., Riding, J.B., Jenkyns, H.C., 2017. Orbital pacing of Early Jurassic (Sinemurian) carbon-cycle and environmental change as a cause for source-rock formation and seabed methane seepage. Sedimentology, 64, 127–149.


Xu, Weimu, Ruhl, M., Jenkyns, H.C., Leng, M.J., Huggett, J.M., Minisini, D., Ullmann, C.V., Riding, J.B., Weijers, J.W.H., Storm, M.S., Percival, L.M.E., Tosca, N.J. Idiz, E.F., Tegelaar, E.W., Hesselbo, S.P., 2018. Evolution of the Toarcian (Early Jurassic) carbon-cycle and global climatic controls on local sedimentary processes (Cardigan Bay Basin). Earth and Planetary Science Letters, 484, 396–411.


Xu, Weimu, Mac Niocaill, C., Ruhl, M., Jenkyns, H.C., Riding, J.B., Hesselbo, S.P., 2018. Magnetostratigraphy of the Toarcian Stage (Lower Jurassic) of the Llanbedr (Mochras Farm) Borehole, Wales: basis for a global standard and implications for volcanic forcing of palaeoenvironmental change. Journal of the Geological Society, 175, 594–604.


Ruhl, M., Hesselbo, S.P., Hinnov, L., Jenkyns, H.C., Xu, Weimu, Riding, J.B., Storm, M., Minisini, D., Ullmann, C.V., Leng, M.J., 2016. Astronomical constraints on the duration of the Early Jurassic Pliensbachian Stage and global climatic fluctuations. Earth and Planetary Science Letters, 455, 149–165.


Percival, L.M.E., Cohen, A.S., Davies, M.K., Dickson, A.J., Hesselbo, S.P., Jenkyns, H.C., Leng, M.J., Mather, T.A., Storm, M.S., Xu, Weimu, 2016. Osmium isotope evidence for two pulses of increased continental weathering linked to Early Jurassic volcanism and climate change. Geology, 44, 759–762.


Percival, L.M.E., Witt, M.L.I., Mather, T.A., Hermoso, M., Jenkyns, H.C., Hesselbo, S.P., Al-Suwaidi, A.H., Storm, M.S., Xu, Weimu, Ruhl, M., 2015. Globally enhanced mercury deposition during the end-Pliensbachian and Toarcian OAE: A link to the Karoo–Ferrar Large Igneous Province. Earth and Planetary Science Letters, 428, 267–280.


Hesselbo, S.P., Bjerrum, C.J., Hinnov, L.A., MacNiocaill, C., Miller, K.G., Riding, J.B., van de Schootbrugge, B., and the Mochras Revisited Science Team, 2013. Mochras borehole revisited: a new global standard for Early Jurassic earth history. Scientific Drilling, 16, 81–91.