DESCRIPTION, ORIGIN AND EVOLUTION OF A BASIN IN SIRENUM TERRAE, MARS, INCLUDING

METHODOLOGY The preliminary study of the Atlantis basin has been carried out through the analysis of the images and the topographic data of the Viking orbiters with the software PDSWIN 2.0. We have used photomosaics with 0.231 km/pixel resolution, as well as individual images with 0.025 km/pixel resolution. The topographic data have been treated with the programs Bryce3D and Surfer 6.0 in order to elaborate digital terrain models, maps and topographic profiles. LOCATION Atlantis is a sedimentary basin centered at 35oS, 177oW in Sirenum Terrae, between the fracture systems of Sirenum Fossae and Memnonia Fossae, SW of the Tharsis dome and South of Gusev crater, close to another topographic low where Gorgonium Chaos is located. DESCRIPTION