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Fig. 7 | Progress in Earth and Planetary Science

Fig. 7

From: Litho-, bio-, and chemostratigraphy of the Middle Triassic carbonate succession in the North-Central Coast Region of Vietnam

Fig. 7

Cross-plots displaying the relationship between δ13C and δ18O values of the studied bulk carbonate samples. Vein samples are from 1.14–1.20, 3.29–3.33, 120.39–120.43, and 148.68–148.72 mdfrh in core no. 4. Cement samples are from 82.28–82.32 and 136.33–136.39 mdfrh in core no. 4. *Samples identified as diagenetically altered based on trace element (Mn and Sr) criteria. **Samples that passed the geochemical screening for diagenetic alteration but were identified as altered based on petrographic observations (shown in gray in Fig. 6)

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