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The composition and configuration of possible Archaean supercontinents remain unresolved. Kenorland, a Neoarchaean supercontinent containing the Southern Granulite Terrane (SGT) in South India, the eastern block of the North China Craton (E-NCC), and the north-central Korean Peninsula, was probably assembled at ca. 2.5 Ga. A detailed comparison of meta-granitoid samples from the Madras Block (SGT), the Yishui Terrane (Shandong Peninsula, E-NCC), and Daeijak Island (NW-Gyeonggi Massif, Korean Peninsula) demonstrates their close similarities in geological setting, age, petrochemistry, isotopic composition and metamorphic history. They were all formed at 2.6–2.5 Ga and metamorphosed at a high grade soon after ca. 2.5 Ga. All are LREE-enriched and HREE-depleted, have low 87Sr/86Sri (0.70201–0.70375) and similar near-chondritic ƐNd(T) (+1.2 to −1.9). These factors, and their close match of geological features, suggest that the three terranes were once contiguous as part of a Neoarchaean supercontinent.

The deposit is the largest lode Au deposit in China. Au occurs mainly in pyrite and polymetallic sulphide-quartz vein/veinlet stockworks. Fluid inclusions are of three main types, CO2-H2O, H2O-CO2 +/- CH4 and aqueous. Microthermometric data show that the pre-Au fluids were CO2 dominant and the homogenisation temperatures are in the range 298-377 degrees C. The fluids, modified by fluid/wallrock reactions, gradually evolved into fluids with less CO2 in the main ore-forming stage. Stable isotope data suggest that the ore-forming fluids were mixture of magmatic and meteoritic origin. The co-occurrence of Au and sulphides implies that Au was most likely transported in the form of Au-sulphide complexes. The pH variation during Au transport was controlled by CO2 buffering., The deposit is the largest lode Au deposit in China. Au occurs mainly in pyrite and polymetallic sulphide-quartz vein/veinlet stockworks. Fluid inclusions are of three main types, CO2-H2O, H2O-CO2 +/- CH4 and aqueous. Microthermometric data show that the pre-Au fluids were CO2 dominant and the homogenisation temperatures are in the range 298-377 degrees C. The fluids, modified by fluid/wallrock reactions, gradually evolved into fluids with less CO2 in the main ore-forming stage. Stable isotope data suggest that the ore-forming fluids were mixture of magmatic and meteoritic origin. The co-occurrence of Au and sulphides implies that Au was most likely transported in the form of Au-sulphide complexes. The pH variation during Au transport was controlled by CO2 buffering.