Reflectance spectroscopy and colorimetry (RSC) 

Color reflectance data were measured on section halves using an integration sphere and a UV-VIS spectrophotometer mounted on the Section Half Multisensor Logger (SHMSL). Spectral counts are recorded in the range of 380 to 700 nm, covering the visible spectrum, and binned in ~2 nm bins. Spectral data are reduced from spectra and recorded in tristimulus XYZ values, CieLAB L*a*b* values, and other units.

Data File format

    Exp: expedition number
    Site: site number
    Hole: hole number
    Core: core number
    Type: type indicates the coring tool used to recover the core (typical types are F, H, R, X).
    Sect: section number
    A/W: archive (A) or working (W) section half.
    Offset (cm): position of the observation made, measured relative to the top of the section.
    Depth CSF-A (m): location of the upper edge of the sample image expressed relative to the top of the hole.
    Depth [other] (m): location of the observation expressed relative to the top of a hole. The location is presented in a scale selected by the science party or the report user.
    Reflectance L*: lightness of the sample expressed in the CIELAB color space.
    Reflectance a*: position of the color on the red/green axis in the CIELAB color space.
    Reflectance b*: position of the color on the yellow/blue axis in the CIELAB color space.
    Tristimulus X: x-component of the color in the CIELAB tristimulus color space.
    Tristimulus Y: y-component of the color in the CIELAB tristimulus color space.
    Tristimulus Z: z-component of the color in the CIELAB tristimulus color space.
    Raw percent reflectance filename: ASCII file with unnormalized spectral data.
    Percent reflectance filename: percent reflectance spectral filename.
    White background correction filename: White background correction filename.
    Dark background correction filename: Dark background correction filename.
    Configuration filename: color reflectance configuration file.
    Timestamp (UTC): point in time at which an observation or set of observations were made.
    Instrument: an abbreviation or mnemonic for the spectrophotometric sensing device used to make this observation (OOUSB4000V).
    Instrument group: abbreviation or mnemonic for the data collection device (logger) used to acquire this observation (SHMSL).
    Text ID: automatically generated unique database identifier for a sample, visible on printed labels.
    Test No: unique number associated with the instrument measurement steps that produced these data. 
    Sample comments: observations recorded about the sample itself.
    Test comments: observations about a measurement or the measurement process; some measurement observations may be under Result comments.
    Result comments: observations about a measurement or the measurement process; some measurement observations may be under Test comments.