Enceladus’ Interior and Geysers – Possibility for Hydrothermal Geochemistry
نویسندگان
چکیده
AND N2 PRODUCTION. D. L. Matson, J. C. Castillo, C. Sotin, T. V. Johnson, J. I. Lunine, A. G. Davies, T. B. McCord, P. C. Thomas, E. P. Turtle, Jet Propulsion Laboratory-California Institute of Technology, Pasadena, CA 91109, USA. (email: Dennis.L.Matson@jpl.nasa.gov); Laboratoire de Planetologie et Geodynamique, Faculte des Sciences, Nantes, France, Lunar and Planetary Laboratory, Tucson, AZ, ITA-ISFI, Roma, Italy, Space Sciences Institute, Bear Fight Center, Box 667, Winthrop, WA. Astrophysics Laboratory, Cornell University, Ithaca, NY.
منابع مشابه
Hydrothermal Geochemistry as the Source of Plume Gases on Enceladus: a Thermodynamic Evaluation
Introduction: The Cassini spacecraft detected a gas plume emanating from Saturns icy satellite Enceladus [13]. Its composition (91% H2O, 3.2% CO2, 4% N2, and 1.6% CH4) was inferred based on measurements by the Ion and Neutral Mass Spectrometer [2]. Jets from warm (110-160 K) fissures (sulci) supply the plume [3], and boiling water in a subsurface reservoir may power the jets [1]. Liquid wate...
متن کاملCan Life Begin on Enceladus? A Perspective from Hydrothermal Chemistry
Enceladus is a target of future missions designed to search for existing life or its precursors. Recent flybys of Enceladus by the Cassini probe have confirmed the existence of a long-lived global ocean laced with organic compounds and biologically available nitrogen. This immediately suggests the possibility that life could have begun and may still exist on Enceladus. Here we will compare the ...
متن کاملHigh-temperature water–rock interactions and hydrothermal environments in the chondrite-like core of Enceladus
It has been suggested that Saturn's moon Enceladus possesses a subsurface ocean. The recent discovery of silica nanoparticles derived from Enceladus shows the presence of ongoing hydrothermal reactions in the interior. Here, we report results from detailed laboratory experiments to constrain the reaction conditions. To sustain the formation of silica nanoparticles, the composition of Enceladus'...
متن کاملGeochemistry and Dynamics of the Yellowstone National Park Hydrothermal System!
The magmatic-hydrothermal system at Yellowstone National Park is unique among presently active systems in regard to its unparalleled geysers, tectonic environment, and magnitude of caldera-forming volcanic activity. However, over geologic time, systems like Yellowstone have been common and appear to have been responsible for the formation of many important basc-metal and precious-mctal ore depo...
متن کاملAn oceanic composition on early and today’s Enceladus
[1] The oceanic composition on Saturn’s moon Enceladus is evaluated through calculations of thermochemical equilibria at hydrothermal and freezing settings. Conditions of rock alteration are constrained from assumptions and models for the moon’s interior composition and thermal evolution, and from the composition of Enceladus’ plume. Results show that an early ocean was an alkaline Na-Cl HCO3 s...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2006