The ages of one orthogneiss sample indicate an emplacement time of its protolith at Neoproterozoic (576±49Ma) and a metamorphic event at 245±33Ma.

zircon dating metamorphic rocks-78

Zircon U-Pb dating was carried out for a number of the metamorphic rocks of different grades in the southern part of the Dabie terrain.

They include regional orthogneisses and enclosed phyllite in South Dabie unit as well as schist and amphibolite in Susong metamorphic belt.

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