Fig. 6
From: Response of carbon cycle to drier conditions in the mid-Holocene in central China
Cross-plots between the carbon isotope ratios of hopane homologues. a C29 ββ vs. C31 αβ hopane. b C29 ββ vs C31 ββ hopane. In each panel, samples from the glacial period are labeled as solid circles, while samples from the Holocene are labeled as open circles
