Magmatic precursors of taxitic dioritic–tonalitic gneisses emplaced at 2533–2499 Ma.
HNDQ and LFTT subgroups originated from evolution of a same mantle derived magma.
LNDQ Subgroup from partial melting of mantle wedge enriched by subducted fluids.
HFTT Subgroup sourced from subducted volcanic sedimentary rocks.
Neoarchean three periods of crust growth at 2.72–2.70, 2.64–2.56, 2.53–2.50 Ga in EHP.