Distinguishing between Shock-darkening and Space-weathering Trends in Ordinary Chondrite Reflectance Spectra
نویسندگان
چکیده
منابع مشابه
Post-shock Annealing and Post-annealing Shock: Implications for the Thermal and Shock Histories of Ordinary-chondrite Parent Bodies
A common view of the thermal and shock histories of ordinary-chondrite (OC) parent bodies is that, for the most part, thermal and shock metamorphism were distinguishable and successive events; e.g., the decay of 26 Al heated chon-dritic planetesimals and subsequent impacts produced various shock effects. Although collisions have long been acknowledged as capable of producing significant heating...
متن کاملIdentifying Asteroidal Ordinary Chondrite Assemblages and Petrographic Types from Vnir Spectra
Introduction: Because of a poor understanding of the delivery mechanisms of meteoroids from the asteroid belt, early asteroid spectral investigations often assumed that the abundance of various meteorite types among meteorite falls was approximately proportional to the abundance of such assemblages within the asteroid population. Based on that assumption, it was concluded that a large fraction ...
متن کاملThe mystery of 506.5 nm feature of reflectance spectra of Vesta and Vestoids: Evidence for space weathering?
Although asteroid 4 Vesta and Vestoids have been believed to be the source of a group of basaltic meteorites called HEDs, there have been detailed spectral analyses on the spectral redness and the 506.5 nm absorption band, suggesting controversy on their space weathering processes and origins. In order to evaluate a possibility that such an apparent inconsistency may be explained by the space w...
متن کاملRelating reflectance spectra space to Munsell color appearance space.
The goal is to construct a simple model relating the conceptually defined Munsell color space to a physical representation of the relationship among the reflectance spectra obtained from the color chips comprising the Munsell color atlas. In the model both the Munsell conceptual system and the transformed reflectance spectra are shown to be well represented in Euclidean space, and the two space...
متن کاملSPACE WEATHERING ON ASTEROIDS: NEW RESULTS FROM THE ULTRAVIOLET. F. Vilas and A
Introduction: We present evidence that space weathering manifests itself at near-ultraviolet wavelengths as a bluing of the spectrum, in contrast with the spectral reddening that has been seen at visible-near-IR wavelengths. This UV bluing often results in a spectral reversal, where surfaces that are bright at visible-near-IR wavelengths are relatively dark at UV wavelengths, and vice-versa. Fu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Planetary Science Journal
سال: 2020
ISSN: 2632-3338
DOI: 10.3847/psj/aba7c2