Impact-driven mobilization of deep crustal brines on dwarf planet Ceres
@inproceedings{Raymond2019ImpactdrivenMO, title={Impact-driven mobilization of deep crustal brines on dwarf planet Ceres}, author={Carol A. Raymond and Anton I. Ermakov and Julie C. Castillo‐Rogez and Sylvain Marchi and B. Carol Johnson and Marc Andre Hesse and Jennifer E. C. Scully and Debra L. Buczkowski and Hanna G. Sizemore and Paul M. Schenk and Andreas Nathues and Ryan S. Park and Thomas H. Prettyman and Lynnae C. Quick and James Tuttle Keane and M. D. Rayman and C.T. Russell}, year={2019} }
Ceres, the only dwarf planet in the inner Solar System, appears to be a relict ocean world. Data collected by NASA’s Dawn spacecraft provided evidence that global aqueous alteration within Ceres resulted in a chemically evolved body that remains volatile-rich. Recent emplacement of bright deposits sourced from brines attests to Ceres being a persistently geologically active world, but the surprising longevity of this activity at the 92-km Occator crater has yet to be explained. Here, we use new…
38 Citations
Recent cryovolcanic activity at Occator crater on Ceres
- Geology
- 2020
NASA’s Dawn mission revealed a partially differentiated Ceres that has experienced cryovolcanic activity throughout its history up to the recent past. The Occator impact crater, which formed ~22 Myr…
Porosity-filling Metamorphic Brines Explain Ceres’s Low Mantle Density
- GeologyThe Planetary Science Journal
- 2022
Recent work has sought to constrain the composition and makeup of the dwarf planet Ceres’s mantle, which has a relatively low density, between 2400 and 2800 kg m−3, as inferred by observations by the…
Brine residues and organics in the Urvara basin on Ceres
- GeologyNature communications
- 2022
Ceres is a partially differentiated dwarf planet, as confirmed by NASA’s Dawn mission. The Urvara basin (diameter ~170 km) is its third-largest impact feature, enabling insights into the cerean…
Evidence of non-uniform crust of Ceres from Dawn’s high-resolution gravity data
- Geology
- 2020
The gravity and shape data acquired by the Dawn spacecraft during its primary mission revealed that Ceres is partially differentiated with an interior structure consistent with a volatile-rich crust,…
The varied sources of faculae-forming brines in Ceres’ Occator crater emplaced via hydrothermal brine effusion
- GeologyNature Communications
- 2020
It is reported that brine effusion emplaced the faculae in a brine-limited, impact-induced hydrothermal system of Occator crater of the dwarf planet Ceres, and that impact-derived fracturing enabled brines to reach the surface.
Science Drivers for the Future Exploration of Ceres: From Solar System Evolution to Ocean World Science
- Geology, PhysicsThe Planetary Science Journal
- 2022
Dawn revealed that Ceres is a compelling target whose exploration pertains to many science themes. Ceres is a large ice- and organic-rich body, potentially representative of the population of objects…
Replenishment of Near‐Surface Water Ice by Impacts Into Ceres' Volatile‐Rich Crust: Observations by Dawn's Gamma Ray and Neutron Detector
- Geology, PhysicsGeophysical Research Letters
- 2021
Ceres' regolith contains water ice that has receded in response to insolation‐driven sublimation. Specially targeted, high spatial‐resolution measurements of hydrogen by Dawn's Gamma Ray and Neutron…
The In Situ Exploration of a Relict Ocean World: An Assessment of Potential Landing and Sampling Sites for a Future Mission to the Surface of Ceres
- Geology, Environmental ScienceThe Planetary Science Journal
- 2021
The Dawn orbiter’s exploration of Ceres, the most water-rich body in the inner solar system after Earth, revealed the dwarf planet to be a relict ocean world of great interest to the astrobiology and…
GAUSS - genesis of asteroids and evolution of the solar system
- Geology, PhysicsExperimental Astronomy
- 2021
The goal of Project GAUSS (Genesis of Asteroids and evolUtion of the Solar System) is to return samples from the dwarf planet Ceres. Ceres is the most accessible candidate of ocean worlds and the…
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