“…Involvement of DMM is in agreement with the model of Hauri et al (1994) showing the entrainment of material surrounding the plume conduit due to heat diffusion. The contribution of DMM material in the Iceland mantle plume is corroborated by numerous studies (Mertz et al, 1991;Haase et al, 1996;Hanan and Schilling, 1997;Dixon et al, 2000;Hanan et al, 2000;Dixon, 2003;Stracke et al, 2003;BlichertToft et al, 2005) though several authors argued against the presence of DMM material in lavas erupted in Iceland (Fitton et al, 1997;Chauvel and Hémond, 2000;Kempton et al, 2000;Skovgaard et al, 2001;Fitton et al, 2003;Kokfelt et al, 2006;Thirlwall et al, 2006). Skovgaard et al (2001) acknowledged that the near-chondritic 187 Os/ 188 Os values observed in picrites are close to the DMM values, but they attributed the low d 18 O of the same samples to the presence of hydrothermally altered suboceanic lithosphere in their source.…”