Skip to main content
U.S. flag

An official website of the United States government

Late Miocene biogeography and paleoclimatology of the central North Atlantic

January 1, 1981

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). ?? 1981.

Citation Information

Publication Year 1981
Title Late Miocene biogeography and paleoclimatology of the central North Atlantic
Authors R. Z. Poore
Publication Type Article
Publication Subtype Journal Article
Series Title Marine Micropaleontology
Index ID 70011741
Record Source USGS Publications Warehouse