Search SEDIS

Data sets Publications Expeditions Thesaurus
optical  search
SNA valid term through 1977. After 1977, use optical spectroscopy, optical spectra, optical properties, optical mineralogy or (as of 1981) optical dispersion or optical extinction as applicable.
optical dispersion  search
RTbackscattering
 optical properties
 refractive index
SNAdded to Thesaurus in 1981.
optical extinction  search
RTextinction
 optical properties
 undulatory extinction
SNBefore 1981, also search extinction AND minerals. Added to Thesaurus in 1981.
optical methods  search
SNAs of 1981, no longer a valid term for GeoRef. See microscope methods.
optical mineralogy  search
RTgeochronology
 relative age
 microscope methods
 mineralogy
 goniometry
 ore microscopy
optical properties  search
RTminerals
 properties
 brightness
 mineralogy
 wave dispersion
 optical dispersion
 birefringence
 polarization
 refractive index
 crystal field
 color centers
 fluorescence
 optical extinction
 isotropy
 pleochroism
optical radar methods  search
USElidar methods
optical spectra  search
BTspectra
 .optical spectra
RTspectroscopy
 optical spectroscopy
SNUsed for data. For methodology, use optical spectroscopy. Before 1978, search optical AND spectroscopy.
optical spectroscopy  search
BTspectroscopy
 .optical spectroscopy
RTchemical analysis
 analysis
 optical spectra
SNBefore 1978, also search optical AND spectroscopy.