The nature and age of basement host rocks and fissure fills in the Lancaster field fractured reservoir, West of Shetland

Holdsworth, R. E.; Trice, R.; Hardman, K.; McCaffrey, K. J.W.; Morton, A.; Frei, D.; Dempsey, E.; Bird, A.; Rogers, S.

doi:10.1144/jgs2019-142

All Outputs (9)

Ikaite formation in streams affected by steel waste leachate: First report and potential impact on contaminant dynamics (2023)
Journal Article
Bastianini, L., Rogerson, M., Brasier, A., Prior, T. J., Hardman, K., Dempsey, E., Bird, A., & Mayes, W. M. (2024). Ikaite formation in streams affected by steel waste leachate: First report and potential impact on contaminant dynamics. Chemical Geology, 644, Article 121842. https://doi.org/10.1016/j.chemgeo.2023.121842

Highly alkaline (pH 9–12) waters can arise from a range of globally significant and environmentally impactful industrial processes such as lime, steel and cement production, alumina refining and energy generation (e.g. combustion ashes). Such residue... Read More about Ikaite formation in streams affected by steel waste leachate: First report and potential impact on contaminant dynamics.

Eclogites and basement terrane tectonics in the northern arm of the Grenville orogen, NW Scotland (2023)
Journal Article
Bird, A., Thirlwall, M., Strachan, R. A., Millar, I. L., Dempsey, E. D., & Hardman, K. (2023). Eclogites and basement terrane tectonics in the northern arm of the Grenville orogen, NW Scotland. Geoscience Frontiers, 14(6), Article 101668. https://doi.org/10.1016/j.gsf.2023.101668

The presence of eclogites within continental crust is a key indicator of collisional orogenesis. Eclogites within the Eastern Glenelg basement inlier of the Northern Highland Terrane (NHT) have been re-dated in order to provide more accurate constrai... Read More about Eclogites and basement terrane tectonics in the northern arm of the Grenville orogen, NW Scotland.

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., Roberts, N. M., Lee, J., Underhill, J. R., McCarthy, D., McCaffrey, K. J., & 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), Article jgs2022-166. 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.

Using UAV-Based Photogrammetry Coupled with In Situ Fieldwork and U-Pb Geochronology to Decipher Multi-Phase Deformation Processes: A Case Study from Sarclet, Inner Moray Firth Basin, UK (2023)
Journal Article
Tamas, A., Holdsworth, R. E., Tamas, D. M., Dempsey, E. D., Hardman, K., Bird, A., Underhill, J. R., McCarthy, D., McCaffrey, K. J., & Selby, D. (2023). Using UAV-Based Photogrammetry Coupled with In Situ Fieldwork and U-Pb Geochronology to Decipher Multi-Phase Deformation Processes: A Case Study from Sarclet, Inner Moray Firth Basin, UK. Remote Sensing, 15(3), Article 695. https://doi.org/10.3390/rs15030695

Constraining the age of formation and repeated movements along fault arrays in superimposed rift basins helps us to better unravel the kinematic history as well as the role of inherited structures in basin evolution. The Inner Moray Firth Basin (IMFB... Read More about Using UAV-Based Photogrammetry Coupled with In Situ Fieldwork and U-Pb Geochronology to Decipher Multi-Phase Deformation Processes: A Case Study from Sarclet, Inner Moray Firth Basin, UK.

New onshore insights into the role of structural inheritance during Mesozoic opening of the Inner Moray Firth Basin, Scotland (2021)
Journal Article
Tamas, A., Holdsworth, R. E., Underhill, J. R., Tamas, D. M., Dempsey, E. D., Hardman, K., …Selby, D. (2022). New onshore insights into the role of structural inheritance during Mesozoic opening of the Inner Moray Firth Basin, Scotland. Journal of the Geological Society, 179(2), Article 066. https://doi.org/10.1144/jgs2021-066

The Inner Moray Firth Basin (IMFB) forms the western arm of the North Sea trilete rift system that initiated mainly during the Late Jurassic–Early Cretaceous with the widespread development of major NE–SW-trending dip-slip growth faults. The IMFB is... Read More about New onshore insights into the role of structural inheritance during Mesozoic opening of the Inner Moray Firth Basin, Scotland.

A bigger splat: The catastrophic geology of a 1.2-b.y.-old terrestrial megaclast (2020)
Journal Article
Killingback, Z., Holdsworth, R. E., Walker, R. J., Nielsen, S., Dempsey, E., & Hardman, K. (2020). A bigger splat: The catastrophic geology of a 1.2-b.y.-old terrestrial megaclast. Geology, 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.

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, https://doi.org/10.1144/jgs2020-074

Hosted in carbonate and crystalline basement rocks below regional unconformities, fissure-fill networks are a widely recognized, but relatively little described near-surface phenomenon (< 1-2km). Faults and fractures in otherwise tight Devonian carbo... Read More about The nature and significance of rift-related, near-surface fissure fill networks in fractured carbonates below regional unconformities.

The nature and age of Mesoproterozoic strike-slip faulting based on Re-Os geochronology of syn-tectonic copper mineralization, Assynt Terrane, NW Scotland (2020)
Journal Article
Holdsworth, R. E., Selby, D., Dempsey, E., Scott, L., Hardman, K., Fallick, A., & Bullock, R. (in press). The nature and age of Mesoproterozoic strike-slip faulting based on Re-Os geochronology of syn-tectonic copper mineralization, Assynt Terrane, NW Scotland. Journal of the Geological Society, jgs2020-011. https://doi.org/10.1144/jgs2020-011

The nature and age of basement host rocks and fissure fills in the Lancaster field fractured reservoir, West of Shetland (2019)
Journal Article
Holdsworth, R. E., Trice, R., Hardman, K., McCaffrey, K. J., Morton, A., Frei, D., Dempsey, E., Bird, A., & Rogers, S. (2020). The nature and age of basement host rocks and fissure fills in the Lancaster field fractured reservoir, West of Shetland. Journal of the Geological Society, 177(5), 1057-1073. https://doi.org/10.1144/jgs2019-142

Hosting up to 3.3 billion barrels of oil in place, the upfaulted Precambrian crystalline rocks of the Lancaster field, offshore west of Shetland, give key insights into how fractured hydrocarbon reservoirs can form in such old rocks. The Neoarchean (... Read More about The nature and age of basement host rocks and fissure fills in the Lancaster field fractured reservoir, West of Shetland.