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Evolution and depositional environments of the Eberswalde fan delta, Mars |
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| Authors: | Monica Pondrelli Angelo Pio Rossi |
| Institution: | a International Research School of Planetary Sciences, Università d'Annunzio, viale Pindaro 42, 65127 Pescara, Italy b International Space Science Institute (ISSI), Hallerstrasse 6, CH-3012 Bern, Switzerland c DLR—Institut für Planetenforschung, Rutherfordstrasse 2, D-12489 Berlin-Adlershof, Germany |
| Abstract: | The Eberswalde crater and its contributing basins have been analyzed in detail in order to reconstruct the geological evolution of the water-related landforms with particular focus on the Eberswalde delta-like feature. Based on a complex strata organization characterized by a topset-foreset-bottomset geometry, typical of delta progradation on Earth, we interpret the Eberswalde feature to be a fan delta associated with a lacustrine system. Depositional sub-environments have been recognized and mapped and the sedimentary processes discussed. A sequence stratigraphy approach has been used to evaluate the system, which we interpret to result from three depositional sequences. These sequences suggest relative water level fluctuations and a longer trend over time towards decreasing water content inside the basin. |
| Keywords: | Mars surface Geological processes |
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