Figure 5: P–T diagram of the HP Grt-websterite in the Alxa area. | Nature Communications

Figure 5: P–T diagram of the HP Grt-websterite in the Alxa area.

From: Paleoproterozoic high-pressure metamorphism in the northern North China Craton and implications for the Nuna supercontinent

Figure 5

Grt–Sp transition curve for websterite (pyroxenite) is from Herzberg30, and the metamorphic facies is from Bucher and Grapes36. Results of P–T calculations for studied samples are shown as assemblages of two to four reaction curves for geothermobarometry, listed in text and Table 1. The line with arrows is a proposed clockwise P–T trajectory. The P–T trajectory of the Grt-websterite of the Sharyzhalgai complex is from Ota et al.59.

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