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Visible/near-infrared spectra and two-layer modeling of palagonite-coated Basalts

January 1, 2001

Fine-grained dust coatings on Martian rocks and soils obscure underlying surfaces and hinder mineralogic interpretations of both remote sensing and in-situ observations. We investigate laboratory visible/near-infrared spectra of various thicknesses of palagonite coatings on basalt substrates. We develop a two-layer Hapke scattering model incorporating porosity, grain size, and derived absorption coefficients of palagonite and basalt that reproduces the observed spectra only when the single scattering particle phase function is varied with wavelength.

Citation Information

Publication Year 2001
Title Visible/near-infrared spectra and two-layer modeling of palagonite-coated Basalts
DOI 10.1029/2000GL012669
Authors J. R. Johnson, W.M. Grundy
Publication Type Article
Publication Subtype Journal Article
Series Title Geophysical Research Letters
Series Number
Index ID 70023379
Record Source USGS Publications Warehouse
USGS Organization