[BCG06-07] Hydrogen isotope analysis of apatite inclusions in the Hadean to early Archean zircon
Keywords:Hadean-early Archean, zircon, apatite, hydrogen isotope analysis
Hydrogen isotope analysis with SIMS show the data sets with the range about δD=-50 to -340 from Jack Hills zircons (3.3 to 4.3 Ga), -15 to -265‰ from Acasta (3.5 to 4.0 Ga) and Labrador (3.8 to 3.9 Ga), and -57±19‰ from Tanzawa tonalite (4.5 Ma) samples. In addition, we evaluated the micro-cracks in zircon to exclude the negative possibility of secondary hydrogen interaction of apatite inclusions. Assuming the magma type the apatite crystalized, Arc-type apatite have the composition δD= -106 to -170‰, and Mantle-type have δD= -232±27‰ and -338±22‰, respectively. The data set above-mentioned result in the Archaean ocean δD= -84±19‰ and mantle water δD= -232±27‰ and -338±22‰.