We investigate the morphology, mineralogy, and stratigraphy of light-toned layered deposits within a trough of Coprates Catena, centered at− 15 N, 300 E. One of the deposits in the eastern portion of the trough contains numerous hydrated minerals, including Al- phyllosilicates, Fe/Mg-phyllosilicates, hydrated silica, hydrated sulfates, jarosite and...
We have carried out a comprehensive survey of the best Cassini ISS data of Saturn s main rings for the purpose of cataloguing all observed spiral density waves, spiral bending waves, and other radial and quasi-radial ring structure. Our survey has revealed a number of new features, including the first known resonant waves raised by Enceladus and Hy...
Simon, Amy AJason RoweGaulme, PatrickHammel, Heidi BCasewell, Sarah LFortney, Jonathan JGizis, John ELissauer, Jack JMorales-Juberias, RaulOrton, Glenn S
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Observations of Neptune with the Kepler Space Telescope yield a 49-day light curve with 98% coverage at a 1-minute cadence. A significant signature in the light curve comes from discrete cloud features. We compare results extracted from the light curve data with contemporaneous disk-resolved imaging of Neptune from the Keck 10-meter telescope at 1....
The Nili Fossae region is the site of a number of proposed Landing Sites for the Mars 2020 Rover. A distinguishing feature of many of these sites is the access to large exposures of carbonate (Ehlmann et al. 2008). Serpentinization has been proposed as a formation mechanism of these carbonates, including carbonated (Brown et al. 2010, Viviano, et a...
Curiosity s Mastcam and MAHLI instruments in Gale Crater (GC) imaged mm-sized circular rimmed hollow nodules (HNs)(Figure 1A), pitting the Sheepbed mudstone of Yellowknife Bay Formation [1, 2]. HNs are significantly smaller than the solid nodules within the outcrop, with an external mean diameter of 1.2 mm and an interior one of 0.7 mm [2] Several ...
Gross, ChristophJanice BishopMaturilli, AD Amore, MHelbert, J
The investigated sample was dredged in the Kahouanne basin during the research cruise SO-154 (RV Sonne) in the Lesser Antilles Island Arc between the islands of Guadeloupe and Montserrat (Halbach et al., 2002). The Kahouanne basin represents the southern extension of the large Kallinago intra-arc basin and has a length of approximately 40 km and a ...
Sub-surface mafic-ultramafic crustal and hydrothermal environments on early Earth and Mars may have been very similar [1]. Hydrogen production from low-temperature alteration of ultramafic and basaltic rocks has been proposed to support early microbial life in Earth s earliest subsurface environments [1]. Similarly, evidence for microbial sulphate ...
