The Paraná Valles are a set of channels in a valley in the

Margaritifer Sinus quadrangle The Margaritifer Sinus quadrangle is one of a series of 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Margaritifer Sinus quadrangle is also referred to as MC-19 (Mars Chart-19) ...

(MC-19) region of Mars, located at approximately 23.1° South and 10.2° West. They are long and were named after an ancient and modern name for a South American river (Brazil, Argentina). A low area between the Paraná Valles and Loire Valles is believed to have once held a lake.Goldspiel, J. and S. Squyres. 2000. Groundwater sapping and valley formation on Mars. Icarus. 89: 176-192. Image:Inverted terrain in Parana Valles.JPG, Example of inverted terrain in the Paraná Valles region, as seen by HiRISE under the HiWish program. Image:Parana Valles.JPG, The Paraná Valles, as seen by HiRISE (scale bar is 1.0 km)

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