Abstract
Strontium isotope stratigraphy provides a chronology for Cenozoic cryogenic strata in the northern Antarctic Peninsula and allows an assessment of diachronism in onset of glacial conditions between East and West Antarctica. The earliest observed event on the Antarctic Peninsula was late Early Oligocene (29.8 ± 0.6 Ma) (at least c. 4 Ma later than in East Antarctica), with a second in the early Early Miocene (22.6 ± 0.4 Ma). Both glacials and intervening interglacial were continent-wide phenomena. Two late Neogene glaciations are distinguished: early Late Miocene (9.9 ± 0.97 Ma) (Hobbs Glacier/Jones Mountains) and latest Miocene (Alexander Island). A further late Neogene glacial deposit (Weddell Formation) can be constrained only as < c. 10 Ma.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
