Thermal Emission Spectrometer Mosaics of Impact Craters: Progress on Shocked Plagioclase DetectionsHigh shock pressures disorder the mineral lattice of plagioclase feldspars and cause weakening and shifts in thermal infrared absorption bands related to an increase in diaplectic glass content, particularly at shock pressures above ~20-25 GPa [1- 9]. We are continuing our investigation of spectral deconvolutions of TES mosaics and mosaics using standard TES orbits for eight impact crater areas. Using a combination of mineral laboratory spectra and spectra of experimentally shocked bytownite feldspars [5] to deconvolve the TES spectra, we find that locations of shocked feldspar detections are not restricted to ejecta near large craters.
Document ID
20030111188
Acquisition Source
Headquarters
Document Type
Conference Paper
Authors
Johnson, J. R. (Geological Survey Flagstaff, AZ, United States)
Staid, M. I. (Geological Survey Flagstaff, AZ, United States)
Titus, T. N. (Geological Survey Flagstaff, AZ, United States)
Gaddis, L. (Geological Survey Flagstaff, AZ, United States)
IDRelationTitle20030110578Collected WorksLunar and Planetary Science XXXIV: Papers Presented at the Thirty-Fourth Lunar and Planetary Science Conference March 17–21, 2003