182W and HSE constraints from 2.7â¯Ga komatiites on the heterogeneous nature of the Archean mantle
Keywords: 182Hf-182W; 187Re-187Os; 176Lu-176Hf; 146,147Sm-142,143Nd; Highly siderophile elements; Abitibi greenstone belt; Boston Creek; Komatiite; Stochastic late accretion; Mantle mixing;