// cpt-city: heine/Exxon88 (cpt)
//
// Geological time scale categorical color scheme
//
// Timescale: Exxon 1988 (Haq et al., 1987)
// Given are tops of STAGES in millions of years before present
//
// author: Christian Heine
// copyright: CC BY-SA 4.0
// year: 2025
// url: https://phillips.shef.ac.uk/pub/cpt-city/heine
#declare Exxon88 =
color_map {
  [0.00000 color rgbf <0.9490,0.9804,0.5490,0.0000>]
  [0.06667 color rgbf <0.9490,0.9804,0.5490,0.0000>]
  [0.06667 color rgbf <0.9020,0.9569,0.4980,0.0000>]
  [0.15556 color rgbf <0.9020,0.9569,0.4980,0.0000>]
  [0.15556 color rgbf <0.7020,0.8706,0.3255,0.0000>]
  [0.19111 color rgbf <0.7020,0.8706,0.3255,0.0000>]
  [0.19111 color rgbf <0.8000,0.9137,0.4078,0.0000>]
  [0.20000 color rgbf <0.8000,0.9137,0.4078,0.0000>]
  [0.20000 color rgbf <0.7490,0.8902,0.3647,0.0000>]
  [0.22667 color rgbf <0.7490,0.8902,0.3647,0.0000>]
  [0.22667 color rgbf <0.7020,0.8706,0.3255,0.0000>]
  [0.26222 color rgbf <0.7020,0.8706,0.3255,0.0000>]
  [0.26222 color rgbf <0.8000,0.9176,0.5922,0.0000>]
  [0.36889 color rgbf <0.8000,0.9176,0.5922,0.0000>]
  [0.36889 color rgbf <0.7490,0.8941,0.5412,0.0000>]
  [0.41333 color rgbf <0.7490,0.8941,0.5412,0.0000>]
  [0.41333 color rgbf <0.7020,0.8745,0.4980,0.0000>]
  [0.44444 color rgbf <0.7020,0.8745,0.4980,0.0000>]
  [0.44444 color rgbf <0.6510,0.8510,0.4588,0.0000>]
  [0.48444 color rgbf <0.6510,0.8510,0.4588,0.0000>]
  [0.48444 color rgbf <0.6000,0.8275,0.4157,0.0000>]
  [0.54667 color rgbf <0.6000,0.8275,0.4157,0.0000>]
  [0.54667 color rgbf <0.5490,0.8039,0.3765,0.0000>]
  [0.57333 color rgbf <0.5490,0.8039,0.3765,0.0000>]
  [0.57333 color rgbf <0.8510,0.9451,0.9686,0.0000>]
  [0.61778 color rgbf <0.8510,0.9451,0.9686,0.0000>]
  [0.61778 color rgbf <0.8000,0.9255,0.9569,0.0000>]
  [0.69778 color rgbf <0.8000,0.9255,0.9569,0.0000>]
  [0.69778 color rgbf <0.7490,0.9059,0.9451,0.0000>]
  [0.76000 color rgbf <0.7490,0.9059,0.9451,0.0000>]
  [0.76000 color rgbf <0.7490,0.9059,0.8980,0.0000>]
  [0.80444 color rgbf <0.7490,0.9059,0.8980,0.0000>]
  [0.80444 color rgbf <0.7020,0.8863,0.8902,0.0000>]
  [0.87556 color rgbf <0.7020,0.8863,0.8902,0.0000>]
  [0.87556 color rgbf <0.6510,0.8667,0.8784,0.0000>]
  [0.92889 color rgbf <0.6510,0.8667,0.8784,0.0000>]
  [0.92889 color rgbf <0.6039,0.8510,0.8667,0.0000>]
  [1.00000 color rgbf <0.6039,0.8510,0.8667,0.0000>]
}