| 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). ?? 1981. |
| Genre: | Article |
| ProdID: | 70011741 |
| Citation Author: | Poore, R. Z. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 616 |
| Citation Issue: | 5-6 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Marine Micropaleontology |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 18 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Late Miocene biogeography and paleoclimatology of the central North Atlantic; 1981; Article; Journal; Marine Micropaleontology; Poore, R. Z. |
| Citation Start Page: | 599 |
| Citation Volume: | 6 |
| Citation Year: | 1981 |
| Type: | citation/reference |
| Text: | Late Miocene biogeography and paleoclimatology of the central North Atlantic; 1981; Article; Journal; Marine Micropaleontology; Poore, R. Z. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Thu, 1 Jan 1981 00:00 -0600 |
| Publisher: | |
