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Effects of Past Global Change on Life (1995) / Chapter Skim
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Pages 214-216

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From page 214...
... ruber averaged about 35~o during the late glacial, reached maximum abundances of 70~o during the early part of the meltwater spike, dropped rapidly to 30% at the cessation of meltwater influx, and increased slightly into the late Holocene. Globorotalia inflata (Figures 12.4a and 12.5a)
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From page 215...
... , a warm-water species in the Gulf of Mexico, was absent during the late glacial, appeared during the early part of the meltwater spike at about 13.7 ka, and showed sporadically high abundances between 12.7 and 11.7 ka, after which it decreased slowly to a minimum ~10.2 ka. It then increased in steps at 9.8 and 8.7 ka.
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From page 216...
... Subzones Y2, Y1, Y1A, Z2 and Z1 correspond to the late glacial, the meltwater spike, the Younger Dryas, the early Holocene, and the late Holocene, respectively.
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Key Terms

  • meltwater spike
  • late glacial
  • north atlantic
  • meltwater influx
  • orca basin

  • laurentide ice
  • globigerinoides ruber
  • foraminiferal assemblages
  • oxygen isotopic
  • deglacial warming

  • surface water
  • foraminiferal species
  • planktonic foraminiferal


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