Abstract

Paraná Basin is a huge oval-shaped basin covering the southern portion of Brazil and parts of Argentina, Paraguay, and Uruguay, with an area of more than 1,700,000 [Formula: see text] (Figure 1 ). Hydrocarbon exploration in Paraná Basin has been a challenge due to the world's second-most-extensive inshore flood basalt complex overlying the Paleozoic sedimentary rocks (Figure 1 ), which in turn are extensively intruded by swarms of diabase dikes and sills, making seismic imaging a difficult task. The basin itself represents approximately one-half of the sedimentary rock volume of onshore Brazilian basins and is still underexplored. No major discovery for oil or gas has been made to date.

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