Claromecó foreland basin

geology

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June 24, 2026

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The Claromecó foreland basin is a geological structure located in northern Patagonia, Argentina. It is characterized by a thick accumulation of sedimentary rocks, exceeding five miles in depth, which formed during the Paleozoic Era. This basin developed as a result of crustal deformation and the stacking of basement rock slices, a common occurrence in orogenic areas. Specifically, the Claromecó basin formed due to the collision of the microcontinent of Patagonia against the supercontinent Gondwana. Foreland basins are typically linear troughs in the Earth's crust where sedimentary rocks are deposited.12

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South America
Early Paleozoic events
The late Paleozoic Claromecó foreland basin in northern Patagonia is now occupied by a sedimentary accumulation more than five miles thick that was formed at the same time as the Karoo basin in southern Africa, both basins resulting from the collision of the microcontinent of Patagonia against Gondwana.
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The late Paleozoic Claromecó foreland basin in northern Patagonia is now occupied by a sedimentary accumulation more than five miles thick that was formed at the same time as the Karoo basin in southern Africa, both basins resulting from the collision of the microcontinent of Patagonia against Gondwana.
Read More