The late Neogene 87Sr/86Sr isotopic record in the western Arabian Sea, Site 722

Research output: Contribution to JournalArticleAcademicpeer-review


Continuous magnetostratigraphy and biostratigraphy made it possible to construct a detailed late Neogene record of 87Sr/86Sr isotopic ratios of ocean water, as measured in the tests of planktonic foraminifers. The late Miocene to Recent is marked by rapidly increasing 87Sr/86Sr ratios in seawater, which results in a chronostratigraphical resolution varying from 0.2 Ma to 1.5 Ma. The 87Sr/86Sr seawater curve has a stepwise character. Periods of rapid increase in the 87Sr/86Sr isotopic ratio of seawater are correlated with important changes in tectonic and climatic conditions. Experiments showed that bulk carbonate sediment samples have differing 87Sr/86Sr ratios from those of planktonic and benthic foraminifers from the same depth. -from Author

Original languageEnglish
Pages (from-to)459-463
Number of pages5
JournalProceedings of the Ocean Drilling Program. Scientific Results
Publication statusPublished - 1 Jan 1991


Dive into the research topics of 'The late Neogene <sup>87</sup>Sr/<sup>86</sup>Sr isotopic record in the western Arabian Sea, Site 722'. Together they form a unique fingerprint.

Cite this