Figure 4
From: Synchronous turnover of flora, fauna and climate at the Eocene–Oligocene Boundary in Asia
Paleoclimatic changes indicated by various climatic proxies.
(a), Variations of kaolinite versus depth. (b), Vertical fluctuations of color index of redness (a*). (c), Variations of Fe2O3 content of the Keziletuogayi section. (d) and (e), High-resolution curves of the redness (a*) and the Fe2O3 content across the Eocene–Oligocene Boundary. Red arrow indicates the variation trend at the Eocene–Oligocene Boundary.
