| Abstract: | Estimates of the age of the stratotype Plio-Pleistocene boundary in Italy range from 1.65 to 2.5 Myr. We aim here to clarify this dating confusion, and we present new radiometric data on ashes from the proposed stratotype section, Vrica, Italy, which indicate that the Plio-Pleistocene boundary must be less than 2 Myr old. Biostratigraphical criteria - the first appearance datums (FADs) and the last appearance datums (LADs) of planktonic foraminifera and calcareous nannoplankton tied to the magnetic reversal chronology - suggest that this boundary may be nearer to 1.7 Myr.-from Authors |
| Genre: | Article |
| ProdID: | 70011681 |
| Citation Author: | Obradovich, J. D.; Naeser, C. W.; Izett, G. A.; Pasini, G.; Bigazzi, G. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | 59 |
| Citation Issue: | 5869 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Science |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 5 |
| 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: | Age constraints on the proposed Plio-Pleistocene boundary stratotype at Vrica, Italy.; 1982; Article; Journal; Science; Obradovich, J. D.; Naeser, C. W.; Izett, G. A.; Pasini, G.; Bigazzi, G. |
| Citation Start Page: | 55 |
| Citation Volume: | 298 |
| Citation Year: | 1982 |
| Type: | citation/reference |
| Text: | Age constraints on the proposed Plio-Pleistocene boundary stratotype at Vrica, Italy.; 1982; Article; Journal; Science; Obradovich, J. D.; Naeser, C. W.; Izett, G. A.; Pasini, G.; Bigazzi, G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1982 00:00 -0600 |
| Publisher: | |
