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Durham University

Department of Earth Sciences

Postgraduate Students

Mr Kit Hardman

PhD Student in the Department of Earth Sciences
Room number: Open Plan Area

Contact Mr Kit Hardman (email at kristian.hardman@durham.ac.uk)

PhD Research

c.40m wide fracture cavity in Devonian limestone, filled with Permo-Triassic sediment and hydrothermal mineralisation

Fault Void Fills: Pervasive and persistent fluid flow pathways in fractured crystalline and carbonate reservoirs.

Upper crustal fault zones are important conduits for fluids in the lithosphere and many develop open cavities that may contain fault rocks, zoned mineral fills and, in some cases, entrained sedimentary material. For my PhD project, I am studying examples of such fault voids and their associated fills, formed at a range of different depths, in order to better understand the relationship between seismogenic faulting and fluid flow, and how this may influence geological processes and the development of economic resources.

Fault voids and their fills are widely recognised in both surface exposures and subsurface cores, and are thought to represent significant potential pathways for the migration of mineralizing fluids and hydrocarbons in otherwise low permeability crystalline basement and carbonate reservoirs. I aim to determine the mechanisms, controls, and characteristics of fault void formation and filling in these outcrops through detailed mapping, field observations, structural measurements, statistical fracture modelling, microstructural/textural analyses, and outcrop modelling/aerial imagery.

Study Areas

Field areas

Torbay, SW England

Pembrokeshire, South Wales

Calabria, Southern Italy

Mendips, Somerset, SW England

Achmelvich, Scottish Highlands West Coast

Adamello, Lombardy, Italian Alps

Clachtoll, Scottish Highlands West Coast

Durness, North West Highlands, Scotland

Loch Loyal, Sutherland, Scotland

Whitby, NE England

Rona Ridge (offshore), West Shetland Basin

Is supervised by

Publications

Presentation

  • Hardman, Kit, Holdsworth, Bob, Dempsey, Eddie & McCaffrey, Ken (2019), Fault Void Fills: Reactivation, frictional melting, and void formation during ancient earthquakes, TSG Conference TSG 2019. Bergen.
  • Hardman, K. , Holdsworth, R.E., Dempsey, E.D., McCaffrey, K., Palladino, G., Siddoway, C., Prosser, Ge. & Killingback, Z. (2018), Fault Void Fills: Internal architectures of near-surface faults and insights into basement cover relationships during rifting, TSG and MSG Joint Conference 2018. Plymouth.
  • Hardman, Kit, Holdsworth, Bob, Dempsey, Eddie & McCaffrey, Ken (2018), Internal Architectures of Near-Surface Faults and Implications for Hydrocarbon Reservoirs, The Geology of Fractured Reservoirs. The Geological Society of London.
  • Hardman, K., Holdsworth, R. E. H., Dempsey, E. & Di Toro, G. (2017), Microstructural analysis and geological characterisation of zeolite bearing fractures from the Adamello Massif, Northern Italy, Fault zone processes from the shallow to the deep crust. Manchester, England.