HiRISE: High Resolution Imaging Science Experiment http://uahirise.org Image updates from the HiRISE Camera onboard the Mars Reconnaissance Orbiter en-us editor@uahirise.org (Ari) Wed, 28 Jan 2014 11:00:00 MST Gullies Old and New Near the Argyre Regionhttp://uahirise.org/ESP_038931_1355As gullies form on slopes, sediment can become deposited to form lobe-shaped fans.Higher Terrain between Sinai and Solis Planahttp://uahirise.org/ESP_038932_1635The area is riddled with faults and ridges that look like uncovered magma dikes.Filled Crater and Scallopshttp://uahirise.org/ESP_038967_1230These scallop formations might be possibly due to ground ice sublimation. Pits in Hale Crater Ejectahttp://uahirise.org/ESP_039524_1445The pits visible here aren't impact craters. The material they're embedded into is ejecta from a large crater called Hale. The 4Q&A: Ramy El Maarry http://uahirise.org/epo/4qa/ramy Ramy is a post doctoral researcher at the University of Bern, Switzerland whose work utilizes HiRISE images extensively.