High-precision measurements of 87Sr/86Sr ratios from foraminifers at the Pliocene/Pleistocene boundary-stratotype section at Vrica (Southern Italy) show moderate variations throughout the section, ranging between 0.709043 and 0.709102. In the two samples closest to the Pliocene/Pleistocene boundary stratotype in which strontium isotopic determinations are available, the 87Sr/86Sr ratio is constrained between 0.709063 ± 12 and 0.709051 ± 8; slightly above, the ratio rises to 0.709089 ± 7. The strontium isotope stratigraphy of the Vrica section is generally in agreement with published data from DSDP/ODP sections and confirms the worldwide correlatability of the Pliocene/Pleistocene boundary-stratotype placed at Vrica, as previously suggested by biostratigraphic and magnetostratigraphic data.
Worldwide correlation of the Pliocene/Pleistocene GSSP at Vrica (Southern Italy) confirmed by strontium isotope stratigraphy / Castorina, Francesca; M. L., Colalongo; G., Pasini; S. C., Vaiani. - In: NEWSLETTERS ON STRATIGRAPHY. - ISSN 0078-0421. - STAMPA. - 36:2-3(1998), pp. 177-187.
Worldwide correlation of the Pliocene/Pleistocene GSSP at Vrica (Southern Italy) confirmed by strontium isotope stratigraphy
CASTORINA, Francesca;
1998
Abstract
High-precision measurements of 87Sr/86Sr ratios from foraminifers at the Pliocene/Pleistocene boundary-stratotype section at Vrica (Southern Italy) show moderate variations throughout the section, ranging between 0.709043 and 0.709102. In the two samples closest to the Pliocene/Pleistocene boundary stratotype in which strontium isotopic determinations are available, the 87Sr/86Sr ratio is constrained between 0.709063 ± 12 and 0.709051 ± 8; slightly above, the ratio rises to 0.709089 ± 7. The strontium isotope stratigraphy of the Vrica section is generally in agreement with published data from DSDP/ODP sections and confirms the worldwide correlatability of the Pliocene/Pleistocene boundary-stratotype placed at Vrica, as previously suggested by biostratigraphic and magnetostratigraphic data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.