Asunción arch

The Asunción arch (Spanish: Arco de Asunción) is a basement high in Paraguay and nearby areas of Argentina that makes up the modern western boundary of Paraná Basin. Asunción arch thought to be a forebulge developed as result of the piling up of material in Bolivia and the Argentine Northwest during the Andean orogeny in the Cenozoic Era.[1]

Along Paraguay Asunción arch has a north-south direction parallel to Paraguay River. To the south of Paraguay Asunción arch runs in a S-SW direction and be traced no further south than to Corrientes Province. A flatter and broader second branch of the Asunción arch runs from southern Paraguay the SE linking up with Río Grande arch in Brazil.[2]

References

Milani, José; Zalán, Pedro Victor (1999). "An outline of the geology and petroleum systems of the Paleozoic interior basins of South America". Episodes. 22 (3).
Rossello, Eduardo A.; Veroslavsky, Gerardo; de Santa Ana, Héctor; Vicente J., Fúlfaro; Fernández Garrasino, César A. (2006). "La dorsal Asunción - Río Grande: Un altofondo regional entre las cuencas Paraná (Brasil, Paraguay y Uruguay) y Chacoparanense (Argentina)" (PDF). Revista Brasileira de Geociências (in Spanish). 36: 181–196.

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[1] Milani, José; Zalán, Pedro Victor (1999). "An outline of the geology and petroleum systems of the Paleozoic interior basins of South America". Episodes. 22 (3).

[2] Rossello, Eduardo A.; Veroslavsky, Gerardo; de Santa Ana, Héctor; Vicente J., Fúlfaro; Fernández Garrasino, César A. (2006). "La dorsal Asunción - Río Grande: Un altofondo regional entre las cuencas Paraná (Brasil, Paraguay y Uruguay) y Chacoparanense (Argentina)" (PDF). Revista Brasileira de Geociências (in Spanish). 36: 181–196.