Outputs (5)

Older than you think: using U–Pb calcite geochronology to better constrain basin-bounding fault reactivation, Inner Moray Firth Basin, western North Sea (2023)
Journal Article
Tamas, A., Holdsworth, R. E., Tamas, D. M., Dempsey, E. D., Hardman, K., Bird, A., …Selby, D. (2023). Older than you think: using U–Pb calcite geochronology to better constrain basin-bounding fault reactivation, Inner Moray Firth Basin, western North Sea. Journal of the Geological Society, 180(5), https://doi.org/10.1144/jgs2022-166

Like many rift basins worldwide, the Inner Moray Firth Basin (IMFB) is bounded by major reactivated fault zones, including the Helmsdale Fault and the Great Glen Fault (GGF). The Jurassic successions exposed onshore close to these faults at Helmsdale... Read More about Older than you think: using U–Pb calcite geochronology to better constrain basin-bounding fault reactivation, Inner Moray Firth Basin, western North Sea.

Mid-crustal reactivation processes linked to frictional melting and deep void development during seismogenic slip: examples from the Lewisian Complex, NW Scotland (2023)
Journal Article
Hardman, K., Holdsworth, R., Scott, L., Dempsey, E., & McCaffrey, K. (2023). Mid-crustal reactivation processes linked to frictional melting and deep void development during seismogenic slip: examples from the Lewisian Complex, NW Scotland. Journal of the Geological Society, 180(2), https://doi.org/10.1144/jgs2022-037

Exhumed examples of ancient fault voids formed during seismic slip at depths >10 km are well preserved in the Assynt Terrane of the Lewisian Complex, NW Scotland. They are interpreted to have formed during regional Mesoproterozoic (c. 1.55 Ga; ‘Assyn... Read More about Mid-crustal reactivation processes linked to frictional melting and deep void development during seismogenic slip: examples from the Lewisian Complex, NW Scotland.

A bigger splat: The catastrophic geology of a 1.2-b.y.-old terrestrial megaclast, northwest Scotland (2020)
Journal Article
Killingback, Z., Holdsworth, R., Walker, R., Nielsen, S., Dempsey, E., & Hardman, K. (2020). A bigger splat: The catastrophic geology of a 1.2-b.y.-old terrestrial megaclast, northwest Scotland. Geology, 49(2), 180-184. https://doi.org/10.1130/g48079.1

Rockfalls are relatively little described from the ancient geological record, likely due to their poor preservation potential. At Clachtoll, northwest Scotland, a megaclast (100 m × 60 m × 15 m) of Neoarchean Lewisian gneiss with an estimated mass of... Read More about A bigger splat: The catastrophic geology of a 1.2-b.y.-old terrestrial megaclast, northwest Scotland.

Basement reservoir plumbing: Fracture aperture, length and topology analysis of the Lewisian Complex, NW Scotland (2020)
Journal Article
McCaffrey, K., Holdsworth, R., Pless, J., Franklin, B., & Hardman, K. (2020). Basement reservoir plumbing: Fracture aperture, length and topology analysis of the Lewisian Complex, NW Scotland. Journal of the Geological Society, 177(6), 1281-1293. https://doi.org/10.1144/jgs2019-143

Upfaulted ridges of Neoarchean crystalline basement rocks formed in the Faeroe-Shetland basin as a consequence of Mesozoic rift processes and are an active target for oil exploration. We carried out a comprehensive fault and fracture attribute study... Read More about Basement reservoir plumbing: Fracture aperture, length and topology analysis of the Lewisian Complex, NW Scotland.

The nature and significance of rift-related, near-surface fissure fill networks in fractured carbonates below regional unconformities (2020)
Journal Article
Hardman, K., Holdsworth, R. E., Dempsey, E., & McCaffrey, K. (2020). The nature and significance of rift-related, near-surface fissure fill networks in fractured carbonates below regional unconformities. Journal of the Geological Society, 177(6), 1168-1185. https://doi.org/10.1144/jgs2020-074

Fissure-fill networks are a widely recognized, but relatively little described, near-surface phenomenon (<1–2 km) hosted in carbonate and crystalline basement rocks below regional unconformities. Faults and fractures in otherwise tight Devonian carbo...