Water played a critical role in the evolution of rocky material and planetesimals in the early Solar System. Many primitive asteroids (the sources of chondrites) accreted a significant amount of water ice and were affected by aqueous alteration and/or fluid-assisted metamorphism. These secondary parent body processes have strongly modified the primary mineralogy of chondrites in favor of a wide diversity of secondary phases that formed by interaction with water. The mineralogical and isotopic characterization of these secondary phases in chondrites and returned samples from hydrous asteroids Ryugu and Bennu can help us reconstruct the dynamical evolution of water in the early Solar System and understand the timing and mechanisms of aqueous alteration on hydrous asteroids.
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Research Article|
June 01, 2022
Recent Advances in our Understanding of Water and Aqueous Activity in Chondrites
Lionel G. Vacher;
Department of Physics, Washington University in St. Louis, St. Louis, MO, USA
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Wataru Fujiya
Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, 310-8512 Ibaraki, Japan
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Elements (2022) 18 (3): 175–180.
Article history
first online:
20 Nov 2022
Citation
Lionel G. Vacher, Wataru Fujiya; Recent Advances in our Understanding of Water and Aqueous Activity in Chondrites. Elements 2022;; 18 (3): 175–180. doi: https://doi.org/10.2138/gselements.18.3.175
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Index Terms/Descriptors
- aqueous alteration
- asteroids
- C-type asteroids
- calcium-aluminum inclusions
- chondrites
- cronstedtite
- crystal chemistry
- crystal growth
- D/H
- hydrates
- hydrogen
- ice
- inclusions
- isotope ratios
- isotopes
- meteorites
- near-Earth asteroids
- near-Earth objects
- O-16
- O-17
- O-18
- oxygen
- P-T conditions
- parent bodies
- protoplanetary disk
- serpentine group
- sheet silicates
- silicates
- solar nebula
- solar system
- stable isotopes
- stony meteorites
- water
- water content
- sample return
- Bennu Asteroid
- Ryugu Asteroid
- tochillinite
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