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  • Conference paper
    Hodgson E, Biggin AJ, Hill M, Muxworthy ARet al., 2013,

    Understanding non-ideal behaviour in interacting single domain and multi-domain magnetite using synthetic magnetite samples (poster)

    , Magnetic Interactions
  • Conference paper
    Abubakar R, Muxworthy AR, Sephton MA, Fraser Aet al., 2013,

    Experimental investigation of magnetic mineral formation in hydrocarbon environments (poster)

    , Magnetic Interactions
  • Conference paper
    Muxworthy AR, Evans ME, Scourfield S, King JGet al., 2013,

    Revisiting the the Modipe Gabbro: new palaeointensity data

    , Magnetic Interactions
  • Conference paper
    Lappe S-CLL, Feinberg J, Muxworthy AR, Harrison Ret al., 2013,

    Comparison and calibration of non-heating palaeointensity methods: a case study using dusty olivine

    , Magnetic Interactions
  • Journal article
    Muxworthy AR, Evans ME, 2013,

    Micromagnetics and magnetomineralogy of ultrafine magnetite inclusions in the Modipe Gabbro

    , Geochemistry Geophysics Geosystems, ISSN: 1525-2027
  • Journal article
    Emmerton S, Muxworthy AR, Sephton MA, 2013,

    A magnetic solution to the Mupe Bay mystery

    , Marine and Petroleum Geology, Vol: 46, Pages: 165-172, ISSN: 0264-8172

    An outcrop of Wealden beds at Mupe Bay (UK) is associated with a key piece of evidence for the timing of hydrocarbon migration in the Wessex Basin. A conglomeratic bed contains oil-stained clasts and matrix that appear different upon superficial observation. Conventional interpretations assign differences to the erosion and transport of oil-cemented clasts by Wealden rivers before their incorporation into a later stained conglomeratic bed. This scenario constrains the onset of oil migration in the basin to the Early Cretaceous; however, arguments have been put forward for single phase staining.Magnetic information may provide new ways to examine the Mupe Bay record of oil migration. Migrating fluids such as hydrocarbons have been shown to cause chemical conditions suitable for the alteration or formation of authigenic magnetite resulting in associated chemical remanent magnetization (CRM). Magnetic characterization reveals both the matrix and clasts contain multi-domain magnetite but abundant hematite only exists within the clasts. Hysteresis parameters show the matrix has more multi-domain and likely larger magnetic grains than the clasts.Magnetic directions are different in the clasts and matrix supporting a two-phase oil-staining event. Moreover, paleomagnetic directions for the clasts after tilt correction (82.6°N and 155.2°E) are consistent with biodegradation processes in the Early Cretaceous. Consistent directions in separate clasts imply the biodegradation and magnetite formation took place following transportation and incorporation of the oil-cemented clasts into the conglomerate bed. Magnetic directions reveal that the Mupe Bay matrix has a remanent magnetization corresponding to today’s magnetic field, confirming the matrix represents an active oil seep.This study represents an unprecedented use of magnetic data to date the onset of oil migration in a basin. The classic two-stage oil-staining scenario, which constrains the onset in the Wesse
  • Conference paper
    Dodd S, Muxworthy AR, Mac Niocaill C, 2013,

    Taking the pulse of the Parana-Etendeká large igneous province (poster)

    , IAGA
  • Book chapter
    Elmore RD, Muxworthy AR, Aldana MM, 2012,

    Remagnetization and chemical alteration of sedimentary rocks

    , Remagnetization and Chemical Alteration of Sedimentary Rocks, Editors: Elmore, Muxworthy, Aldana, Mena, London, Publisher: Geological Society
  • Journal article
    Chang L, Roberts AP, Williams W, Fitz Gerald JD, Larrasoana JC, Jovane L, Muxworthy ARet al., 2012,

    Giant magnetofossils and hyperthermal events

    , Earth and Planetary Science Letters, Vol: 351-352, Pages: 258-269
  • Conference paper
    Almeida TP, Muxworthy AR, Williams W, Dunin-Borkowski Ret al., 2012,

    Dynamic exsolution of titanomagnetites and their associated magnetic response examined by complementary environmental TEM and off-axis electron holography

    , European Microscopy Congress
  • Book chapter
    Emmerton S, Muxworthy AR, Sephton MA, 2012,

    Magnetic characterization of oil sands at Osmington Mills and Mupe Bay, Wessex Basin, UK

    , Remagnetization and Chemical Alteration of Sedimentary Rocks, Editors: Elmore, Muxworthy, Aldana, Mena, Elmore, Muxworthy, Aldana, Mena, London, Publisher: Geological Society, Pages: 189-198
  • Conference paper
    Biggin AJ, Badejo S, Shaw J, Dekkers MJ, Muxworthy ARet al., 2012,

    How does cooling rate affect the intensity of thermoremanent magnetisation in samples containing multidomain and interacting single domain ferrimagnetic grains? (poster)

    , EGU
  • Conference paper
    Harrison RJ, Muxworthy AR, Lappe SCLL, 2012,

    FORCintense: A graphical implementation of the Preisach method of paleointensity estimation within FORCinel

    , EGU
  • Conference paper
    Muxworthy AR, Evans ME, 2012,

    How well can “single crystals” record the geomagnetic field?

    , Magnetic Relaxation
  • Conference paper
    Almeida T, Muxworthy AR, Williams W, Dunin-Borkowski Ret al., 2012,

    Dynamic chemical processes examined by in situ TEM and the implications for investigating palaeomagnetism

    , Magnetic Relaxation

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