| 2. |
- Lindstrom, Sofie, et al.
(författare)
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Intense and widespread seismicity during the end-Triassic mass extinction due to emplacement of a large igneous province
- 2015
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Ingår i: Geology. - 0091-7613. ; 43:5, s. 387-390
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Tidskriftsartikel (refereegranskat)abstract
- Multiple levels of earthquake-induced soft-sediment deformations (seismites) are concentrated in the end-Triassic mass extinction interval across Europe. The repetitive nature of the seismites rules out an origin by an extraterrestrial impact. Instead, this intense seismic activity is linked to the formation of the Central Atlantic magmatic province (CAMP). By the earliest Jurassic the seismic activity had ceased, while extrusive volcanism still continued and biotic recovery was on its way. This suggests that magmatic intrusions into sedimentary strata during early stages of CAMP formation caused emission of gases (SO2, halocarbons, polycyclic aromatic hydrocarbons) that may have played a major part in the biotic crisis.
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| 3. |
- Sopher, Daniel, et al.
(författare)
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A probabilistic assessment of the effective CO2 storage capacity within the Swedish sector of the Baltic Basin
- 2014
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Ingår i: International Journal of Greenhouse Gas Control. - : Elsevier BV. - 1750-5836 .- 1878-0148. ; 30, s. 148-170
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Tidskriftsartikel (refereegranskat)abstract
- A regional assessment of the effective CO2 storage capacity within the Swedish Sector of the Baltic Sea Basin has been performed. Storage within several deep Cambrian sandstone aquifers, sealed by a thick sequence of Ordovician and Silurian limestone and marlstone, was investigated. Stratigraphic and structural traps were considered within the Faludden, Nar and Viklau reservoirs. Effective CO2 storage capacities and associated uncertainty were calculated probabilistically, using methods outlined by the U.S. Department of Energy and the U.S. Geological Survey. Detailed characterisation of porosity, reservoir thickness, top reservoir structure, CO2 density and storage efficiency factor was performed. A Monte Carlo approach was adopted to generate distributions of effective storage capacity for the scenarios considered. Within the study area, the most suitable structural trap is the S41/Dalders structure, located in the southeastern part of the Swedish sector, with estimated low, mid and high storage capacities of 85 Mt, 145 Mt and 224 Mt, respectively. The regional Faludden stratigraphic pinch out trap was assessed to have low, mid and high effective storage capacities of 4330 Mt, 5579 Mt and 6962 Mt, respectively. The storage capacity methodology outlined here, that includes estimates of uncertainties, may be easily adapted to other areas of interests for geological storage of CO2.
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