A possible new Bronze Age period at Troy

Abstract Statistical analysis of Carl Blegen's pottery sequence using Correspondence Analysis (CA) suggests a gap of 100–200 years between his Troy III and IV periods. From the Manfred Korfmann excavations three stratigraphic sequences hitherto assigned to Troy IV and V appear to bridge it. This allocation is based on stratigraphic/architectural grounds and on the observable development in ceramic shapes and wares. Heinrich Schliemann's pottery sequence from 1870–1873 is also analysed by CA and found to compare well with Blegen's (with limited exceptions probably due to the larger scope of his excavations), but it does not exhibit the same gap. This suggests that during the ‘bridge’ period occupation shrank to the summit on the western end of the citadel mound. This ‘bridge’ period of seven or more building phases has a distinctive ceramic assemblage and may be called the Proto-IV period. It is broadly contemporary with Middle Helladic I, Beycesultan VIII–VI, Küllüoba II and the Tarsus Early Bronze to Middle Bronze transitional period. Careful re-evaluation of the radiocarbon evidence dates it to ca 2150–1990 cal. BC. Botanical and faunal evidence from the strata in question attests significantly drier climatic conditions which, together with the smaller size of the settlement, probably reflect the 4.2ka cal. BP climatic deterioration.