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Early Cenozoic Glaciation, Antarctic Weathering, and seawater 87Sr/86Sr: is there a Link?

Zachos, James; Opdyke, Bradley; Quinn, Terrence; Jones, Cynthia; Halliday, Alexander


Stable and radiogenic isotopic and sedimentological data from sub-Antarctic deep sea sediment cores reveal a temporal link between changes in seawater 87Sr/86Sr ratios and major episodes of late Eocene-early Oligocene climate change. The 87Sr/86Sr records show two major inflections, one at 38-39 Ma near the middle/late Eocene boundary, followed by another at 33.4 Ma. Similarly, the oxygen isotope, ice-rafted debris, and clay assemblage records indicate two important climatic events: the...[Show more]

CollectionsANU Research Publications
Date published: 1999
Type: Journal article
Source: Chemical Geology


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