P-T Pseudosection (IMAGE) Science China Press Caption The left figure shows the P-T pseudosection calculated for the representative tonalitic sample (J13). The melt compositions simulated for three isobaric melting processes under high, medium and low pressure conditions are presented in the right (an-ab-or) diagram, the shadow showing the composition range of trondhjemites in the Eastern Hebei. Credit ©Science China Press Usage Restrictions None License Licensed 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.