Figure 4 (IMAGE) Tohoku University Caption The matrix component and dolomite composition (f) Relative abundance of the matrix. (a-c) The dolomite profile within the matrix shows the variation of Mg and Fe corresponding to five oscillatory zoning under backscattered image (BSE). A thin-section scan with a red-dashed square indicates the areas analyzed for a couple of analyses in this study. Credit Noriyoshi Tsuchiya Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.