Figure 2 | Scientific Reports

Figure 2

From: Multiple climate cooling prior to Sturtian glaciations: Evidence from chemical index of alteration of sediments in South China

Figure 2

Stratigraphic column and chemical index of alteration (CIA) variations from Jialu to Nantuo Formation in Lijiapo section.

The normal chronology data is the published data from ref. 24, in which the chronology data are from the same Lijiapo sections. The italic chronology data with label “*” are estimated based on the strata thickness and sedimentation rate. CIAcorr indicates corrected CIA values for K-metasomatism; the CIA results from coarse sandstones are excluded during the discussions.

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