// cpt-city: wkp/strat/eras (cpt)
//
// colours from the Wikigeologic scales, dates (MYa)
// from wikipedia pages
//
// author: Sémhur
// copyright: Creative commons attribution share-alike 3.0 unported
// year: 2010
// url: https://phillips.shef.ac.uk/pub/cpt-city/wkp/strat
#declare eras =
color_map {
  [0.00000 color rgbf <0.9804,0.9922,0.0039,0.0000>]
  [0.01638 color rgbf <0.9804,0.9922,0.0039,0.0000>]
  [0.01638 color rgbf <0.4039,0.7725,0.7922,0.0000>]
  [0.06275 color rgbf <0.4039,0.7725,0.7922,0.0000>]
  [0.06275 color rgbf <0.6000,0.7529,0.5529,0.0000>]
  [0.13550 color rgbf <0.6000,0.7529,0.5529,0.0000>]
  [0.13550 color rgbf <0.9961,0.7020,0.2627,0.0000>]
  [0.25000 color rgbf <0.9961,0.7020,0.2627,0.0000>]
  [0.25000 color rgbf <0.9922,0.7059,0.4118,0.0000>]
  [0.40000 color rgbf <0.9922,0.7059,0.4118,0.0000>]
  [0.40000 color rgbf <0.9686,0.2627,0.4510,0.0000>]
  [0.65000 color rgbf <0.9686,0.2627,0.4510,0.0000>]
  [0.65000 color rgbf <0.9765,0.6078,0.7725,0.0000>]
  [0.70000 color rgbf <0.9765,0.6078,0.7725,0.0000>]
  [0.70000 color rgbf <0.9176,0.4000,0.6941,0.0000>]
  [0.80000 color rgbf <0.9176,0.4000,0.6941,0.0000>]
  [0.80000 color rgbf <0.9569,0.2667,0.6235,0.0000>]
  [1.00000 color rgbf <0.9569,0.2667,0.6235,0.0000>]
}