“…One region that may develop into a relevant site for CCS projects is the Paraná basin in southern Brazil, where voluminous layers of continental flood basalts 19 , 20 cover an area of 1.2 × 10 6 km 2 . The studied basalts represent the main tholeiitic magmatism record in the south portion of the South American platform 21 – 24 , partially covering central and southern Brazil, Uruguay, and Paraguay 19 , 20 (Fig. 1 A,B).…”
Section: Introductionmentioning
confidence: 99%
“…They are comprised of heterogeneous lava packages with thin sedimentary interbeds 19 , 20 . The more primitive basaltic layers stratigraphically overlie aeolian sandstones, followed by andesitic, dacitic and rhyolitic lavas; the upper stratigraphic unit is formed by a basaltic flow emplaced during the waning phase of volcanic activity 24 , 25 , 28 . Figure 1 ( A ) Major geodynamic units of South America.…”
Section: Introductionmentioning
confidence: 99%
“… Figure 1 ( A ) Major geodynamic units of South America. ( B ) Geology map with the spatial distribution of the Paraná continental flood basalts in the southern portion of the South America platform 24 . …”
CO2 capture and storage in geological reservoirs have the potential to significantly mitigate the effects of anthropogenic gas emissions on global climate. Here, we report the results of the first laboratory experiments of CO2 injection in continental flood basalts of South America. The results show that the analyzed basalts have a mineral assemblage, texture and composition that efficiently allows a fast carbonate precipitation that starts 72 h after injection. Based on the availability of calcium, chemical monitoring indicates an estimated CO2 storage of ~ 75%. The carbonate precipitation led to the precipitation of aragonite (75.9%), dolomite (19.6%), and calcite (4.6%).
“…One region that may develop into a relevant site for CCS projects is the Paraná basin in southern Brazil, where voluminous layers of continental flood basalts 19 , 20 cover an area of 1.2 × 10 6 km 2 . The studied basalts represent the main tholeiitic magmatism record in the south portion of the South American platform 21 – 24 , partially covering central and southern Brazil, Uruguay, and Paraguay 19 , 20 (Fig. 1 A,B).…”
Section: Introductionmentioning
confidence: 99%
“…They are comprised of heterogeneous lava packages with thin sedimentary interbeds 19 , 20 . The more primitive basaltic layers stratigraphically overlie aeolian sandstones, followed by andesitic, dacitic and rhyolitic lavas; the upper stratigraphic unit is formed by a basaltic flow emplaced during the waning phase of volcanic activity 24 , 25 , 28 . Figure 1 ( A ) Major geodynamic units of South America.…”
Section: Introductionmentioning
confidence: 99%
“… Figure 1 ( A ) Major geodynamic units of South America. ( B ) Geology map with the spatial distribution of the Paraná continental flood basalts in the southern portion of the South America platform 24 . …”
CO2 capture and storage in geological reservoirs have the potential to significantly mitigate the effects of anthropogenic gas emissions on global climate. Here, we report the results of the first laboratory experiments of CO2 injection in continental flood basalts of South America. The results show that the analyzed basalts have a mineral assemblage, texture and composition that efficiently allows a fast carbonate precipitation that starts 72 h after injection. Based on the availability of calcium, chemical monitoring indicates an estimated CO2 storage of ~ 75%. The carbonate precipitation led to the precipitation of aragonite (75.9%), dolomite (19.6%), and calcite (4.6%).
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