Fig. 7
Relationships between the mineralogical maturity of samples and (a). annual mean precipitation and (b). annual mean temperature in China during 2011–2020. (The sediments with a higher degree of mineralogical maturity have higher Log (SiO2/Al2O3) and lower Log (Na2O/K2O) values, so the Log (SiO2/Al2O3) − Log (Na2O/K2O) values represent the mineralogical maturity, and the increase in this value indicates an increase in the mineralogical maturity of the sediment to some extent.)
