『Abstract
　In conjunction with increasing benthic foraminiferal δ¹⁸O values at the Eocene-Oligocene transition (EOT; ca. 34 Ma), coarse-grained ice-rafted debris (IRD; ＞425μm) appears abruptly alongside fossil fish teeth with continentally derived neodymium (Nd) isotope ratios (εNd) in Kerguelen Plateau (Southern Ocean) sediments. Increased Antarctic weathering flux, as inferred from two steps to less radiogenic εNd values, coincides with two steps in benthic foraminiferal δ¹⁸O values. These results indicate that two distinct surges of weathering were generated by East antarctic ice growth during the EOT. Weathering by ice sheets during a precursor glaciation at 33.9 Ma did not produce significant IRD accumulation during the first εNd shift. Glacial weathering was sustained during a terrace interval between the two steps, probably by small high-elevation ice sheets. A large increase in weathering signals the rapid coalescence of small ice sheets into an ice sheet of continental proportions ca. 33.7 Ma. Rapid ice sheet expansion resulted in a suppression of weathering due to less exposed area and colder conditions. Parallel changes in Antarctic weathering flux and deep-sea carbonate accumulation suggest that ice-sheet expansion during the EOT had a direct impact on the global carbon cycle; possible mechanisms include associated changes in silicate weathering on the East Antarctic craton and enhanced fertilization of Southern Ocean waters, both of which warrant further investigation.』

Introduction
Material and methods
Results
Discussion
　Timing of IRD delivery to the Kerguelen Plateau
　Nature of the Nd isotope excursion
　Weathering and ice volume history across the EOT
Conclusions
Acknowledgments
References cited