四川盆地早寒武世裂陷槽西部页岩发育背景与有机质富集

周国晓,魏国齐,胡国艺,武赛军,田亚杰,董才源

The development setting and the organic matter enrichment of the Lower Cambrian shales from the western rift trough in Sichuan Basin

Guo-xiao ZHOU,Guo-qi WEI,Guo-yi HU,Sai-jun WU,Ya-jie TIAN,Cai-yuan DONG

图2 下寒武统页岩的(a)沉积构造背景、(b)化学组成变化三角图和(c) Ga/Rb与K2O/Al2O3关系[（a）据文献[2]、（b）据文献[32]、（c）据文献[29]修改]

Fig.2 Sedimentary tectonic setting (a), (b) the triangle map of chemical composition (b) and Ga/Rb Vs. K2O/Al2O3 of the Lower Cambrian shales (revised Separately from Refs.[2], [32] and [29])