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Effects of Past Global Change on Life (1995) / Chapter Skim
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Pages 209-209

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From page 209...
... Detailed oxygen isotopic and faunal analyses of radiometrically dated cores from the Orca Basin, Gulf of Mexico, illustrate the response of planktonic foraminifera to temperature and salinity changes in a marginal basin that amplified deglacial environmental change. Warmwater planktonic foraminifera began to replace cold-water forms in response to early deglacial warming at 14 ka, and the euryhaline form Globigerinoides ruber dominated during an episode of low-salinity meltwater influx into the Gulf of Mexico from 14 to 11.4 ka.
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Key Terms

  • meltwater influx
  • orca basin
  • globigerinoides ruber
  • foraminiferal assemblages
  • oxygen isotopic

  • deglacial warming
  • environmental changes
  • surface water
  • planktonic foraminiferal


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