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dc.contributor.authorLawrence, KT
dc.contributor.authorBailey, Ian
dc.contributor.authorRaymo, ME
dc.date.accessioned2013-12-19T11:54:57Z
dc.date.issued2013-10-25
dc.description.abstractRecently, the veracity of the published chronology for the Pliocene section of North Atlantic Ocean Drilling Program Site 982 was called into question. Here, we examine the robustness of the original age model as well as the proposed age model revision. The proposed revision is predicated on an apparent mis-identification of the depth to the Gauss-Matuyama (G/M) polarity chronozone reversal boundary (2.581 Ma) based on preliminary shipboard paleomagnetic data and offers a new chronology which includes a hiatus between ~3.2 and 3 Ma. However, an even more accurate shore-based, u-channel-derived polarity chronozone stratigraphy for the past ~2.7 Ma supports the shipboard composite stratigraphy and demonstrates that the original estimate of the depth of the G/M reversal in the Site 982 record is correct. Thus, the main justification forwarded to support the revised chronology no longer exists. We demonstrate that the proposed revision results in a pronounced anomaly in sedimentation rates proximal to the proposed hiatus, erroneous assignment of marine-isotope stages in the Site 982 Pliocene benthic stable oxygen isotope stratigraphy, and a markedly worse correlation of proxy records between this site and other regional paleoclimate data. We conclude that the original chronology for Site 982 is a far more accurate age-model than that which arises from the published revision. We strongly recommend the use of the original chronology for all future work at Site 982.en_GB
dc.identifier.citationVol. 9, No. 5, pp. 2391 - 2397en_GB
dc.identifier.doi10.5194/cp-9-2391-2013
dc.identifier.urihttp://hdl.handle.net/10871/14304
dc.language.isoenen_GB
dc.publisherEuropean Geosciences Unionen_GB
dc.titleRe-evaluation of the age model for North Atlantic Ocean Site 982 – arguments for a return to the original chronologyen_GB
dc.typeArticleen_GB
dc.date.available2013-12-19T11:54:57Z
dc.identifier.journalClimate of the Pasten_GB


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