Fig. 12
From: Formation of carbonate laminae in shale and their impact on organic matter in Dongying depression
Spider diagrams of trace elements in the samples (A): micritic carbonate minerals; (B) grain carbonate laminae; (C): clay minerals in micritic carbonate rocks; (D): clay laminae in grain carbonate rocks. All data are normalized to the upper crustal average values for trace elements from Taylor and McLennan58 UCC.
