Regolith of the Crater Floor Units, Jezero Crater, Mars: Textures, Composition, and Implications for Provenance

Stratigraphy and Evolution of Delta Channel Deposits, Jezero Crater, Mars

Introduction: The Jezero impact crater hosted an open-basin lake [1] that was active during the valley network forming era on early Mars [2]. This basin contains a well exposed delta deposit at the mouth of the western inlet valley (Fig. 1) [1,3-5]. The fluvial stratigraphy of this deposit provides a record of the channels that built the delta over time. Here we describe observations of the str...

An overfilled lacustrine system and progradational delta in Jezero crater, Mars Implications for Noachian climate

The presence of valley networks and open-basin lakes in the late Noachian is cited as evidence for overland flow of liquid water and thus a climate on early Mars that might have supported precipitation and runoff. Outstanding questions center on the nature of such a climate, its duration and variability, and its cause. Open basin lakes, their interior morphology, and their associated channels p...

Sulfate deposition in subsurface regolith in Gusev crater, Mars

[1] Excavating into the shallow Martian subsurface has the potential to expose stratigraphic layers and mature regolith, which may hold a record of more ancient aqueous interactions than those expected under current Martian surface conditions. During the Spirit rover’s exploration of Gusev crater, rover wheels were used to dig three trenches into the subsurface regolith down to 6–11 cm depth: R...

Stratigraphy of the Gale Crater Rim and Floor Units

logic map of Northeast Gale crater. Solid and patterned shapes represent unique geologic units identified through morphological classifications using HiRISE and CTX. Blue and green outlines indicate identification of mafic and hydrated mineral phases found through the use of CRISM. STRATIGRAPHY OF THE GALE CRATER RIM AND FLOOR UNITS. J. Buz 1 and B. L. Ehlmann 1,2 , 1 Geological & Planetary Sci...

Sedimentological evidence for a deltaic origin of the western fan deposit in Jezero crater, Mars and implications for future exploration