Atlantic overturning responses to obliquity and precession over the last 3 Myr

  title={Atlantic overturning responses to obliquity and precession over the last 3 Myr},
  author={Lorraine E. Lisiecki},
This study analyzes 39 Atlantic and seven Pacific benthic δC records to characterize obliquity and precession responses in Atlantic overturning since 3 Ma. Regional benthic δC stacks are also analyzed. A major transition in orbital responses is observed at 1.5–1.6 Ma coincident with the first glacial shoaling of Northern Component Water. Since ∼1.5 Ma, the phases of Atlantic benthic δC records from 2300 to 4000 m depth lag maximum obliquity by 59 (6.7 kyr) and June perihelion precession forcing… CONTINUE READING


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