Estimated pressure gap between eclogite and garnet peridotite from Rongcheng County, in the Su-Lu region of eastern China

Abstract

Garnet peridotites from Chijiadian in the Su-Lu region,China were reported to show UHP condition(>4GPa,>700°C) but kyanite-eclogites from the same area were reported to show about 3GPa and 800°C. Therefore we considered about the estimated pressure gap by applying new geothermobarometer. The kyanite-eclogites yielded about 4.0GPa at 700°C, and garnet peridotites yielded UHP condition of 5.0GPa,800°C.Thus, the pressure gap between eclogites and garnet peridotites was reduced.