atmospheric CO2 level The Paleozoic SSZ-type ophiolite and subduction rollback in the eastern Junggar...present day values (Kasting, 1993; Berner et al., 2001; Kaufman et al., 2003). If so, it would imply a high...(xamzhongping@cgs.gov.cn) There are two Paleozoic ophiolite belts, Karamaili and Aermantai, in the eastern...northerly Aermantai ophiolite, aged by 503 to 481Ma (Xiao et al., 2006; Jian et al., 2003), has been testified...et al., 2001) of suprasubduction zone (SSZ). Our data show that the southerly Karamaili ophiolite, generated |