C: Datasets suggesting a drying environment at 2.5 Ma, shown
by λ 18O from benthic foraminifera, a proxy for global temperature, smoothed with a Gaussian window of 200 ky; eustatic sea level; and
magnetic susceptibility, a proxy for ice rafted debris and Northern Hemisphere glaciation.
We studied a high - resolution multiproxy data set, including
magnetic susceptibility (MS), CaCO3 content, and stable isotopes (δ18O and δ13C), from the stratigraphic interval covering the uppermost Maastrichtian and the lower Danian, represented
by the pelagic limestones of the Scaglia Rossa Formation continuously exposed in the classic sections of the Bottaccione Gorge and the Contessa Highway near Gubbio, Italy.