Late Miocene biogeography and paleoclimatology of the central North Atlantic
Marine Micropaleontology
By: R.Z. Poore
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Abstract
Quantitative analyses of planktonic foraminiferal assemblages from Deep Sea Drilling Project (DSDP) Holes 334 and 410 demonstrate that subpolar and subtropical faunal provinces existed in the North Atlantic during the late Miocene. Climatic oscillations are clearly recorded in Hole 410 by variations in abundance of the Neogloboquadrina subpolar assemblage. These climatic oscillations have a period of about 1 m.y. Higher frequency oscillations with a periodicity of one to several hundred thousand years are evident from about 6.5 to 7.5 m.y. and are probably present throughout the entire late Miocene.
A revised age of 7.0 m.y. is proposed for the first occurrence of the calcareous nannofossil Amaurolithus primus (the Amaurolithus datum).
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Late Miocene biogeography and paleoclimatology of the central North Atlantic |
| Series title | Marine Micropaleontology |
| DOI | 10.1016/0377-8398(81)90023-2 |
| Volume | 6 |
| Issue | 5-6 |
| Year Published | 1981 |
| Language | English |
| Publisher | Elsevier |
| Description | 18 p. |
| First page | 599 |
| Last page | 616 |
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