The architecture of basalt reservoirs in the North Atlantic Igneous Province with implications for basalt carbon sequestration

Marija P. Rosenqvist, John M. Millett, Sverre Planke, Rakul M. Johannesen, Simon R. Passey, Erik V. Sørensen, Henrik Vosgerau, Bjørn Jamtveit

Publikation: Bidrag til bog/rapport/konferenceproceedingsBogkapitelForskningpeer review

2 Citationer (Scopus)

Resumé

Offshore CO2 sequestration in basaltic formations of the North Atlantic Igneous Province may allow permanent storage of large volumes of CO2 through rapid carbonate mineralization. Characterizing the internal architecture of such reservoirs is key to assessing the storage potential. In this study, six photogrammetry models and three boreholes on the Faroe Islands have been used to characterize the internal lava sequence architectures as a direct analogue to potential offshore North Atlantic Igneous Province storage sites. The studied formations are dominated by c. 5 to 50 m thick simple and compound lava flows, with drill core observations documenting a transition from pāhoehoe moving towards ‘a’ā lava flow types interbedded with thin (<5 m thick) volcaniclastic rock units. The identification of flow margin breccias is potentially important as these units form excellent reservoirs in several other localities globally. Stacked, thick simple flows may present sealing units associated with dense flow interiors. Connected porous and permeable lava flow crusts present potential reservoirs; however, the degree of secondary mineralization and alteration can alter initially good reservoir units to impermeable barriers for fluid flow. Large-scale reservoir volumes may be present mainly within both vesicular, fractured pāhoehoe and brecciated flow margins of transitional simple lava flows.

OriginalsprogEngelsk
TitelThe impacts of igneous systems on sedimentary basins and their energy resources
RedaktørerB. Kilhams, S. Holford, D. Gardiner, S. Gozzard, L. Layfield, C. McLean, S. Thackrey, D. Watson
ForlagGeological Society of London
Sider389-413
Antal sider25
ISBN (Elektronisk)978-1-78620-616-9
DOI
StatusUdgivet - 9 aug. 2024

Publikationsserier

NavnGeological Society Special Publication
Vol/bind547
ISSN0305-8719

Programområde

  • Programområde 4: Mineralske råstoffer

Fingeraftryk

Dyk ned i forskningsemnerne om 'The architecture of basalt reservoirs in the North Atlantic Igneous Province with implications for basalt carbon sequestration'. Sammen danner de et unikt fingeraftryk.

Citationsformater