Spectral Interpretation of Magmatic Evolution, Oxidation, and Crystallinity in a Volcanic Planetary Analog System

Scudder, N A ; Horgan, B ; Rampe, E B ; Smith, R J ; Rutledge, A M

关键词: CRYSTALLINITY;    NEAR INFRARED RADIATION;    OXIDATION;    SPECTRA;    SPECTROSCOPY;    VOLCANOES;    CHEMICAL EVOLUTION;    IGNEOUS ROCKS;    INFRARED SPECTRA;    TERRESTRIAL PLANETS;    PLANETARY SURFACES;   

RP-ID  :  JSC-E-DAA-TN66079

学科分类：天文学(综合)

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Volcanic surfaces are common and varied throughout the terrestrial planets. Remote spectroscopy is often the only method for determining surface chemistry and mineralogy of such provinces, and is thus critical for understanding petrologic processes and constraining planetary interior evolution and chemistry. Natural volcanic systems exhibit variability in magmatic chemical evolution, crystallinity, oxidation, and eruption-related alteration (e.g. hydrothermal). The extent to which spectroscopy can identify these characteristics alongside each other is thus a key question for interpreting volcanic processes from orbit. While the effects of each of these on visible/near infrared (VNIR) and thermal infrared (TIR) spectra of igneous rocks has been studied separately to varying degrees, their combined spectral effects (and interpretability of such spectra) are understudied.