The Diversity of Anomalous HEDs: Isotopic Constraints on the Connection of EET 92023, GRA 98098, and Dhofar 700 With Vesta

摘要: The possibility for multiple parent bodies, instead of a common body Vesta, eucrites has been suggested based on the variable oxygen isotopic composition observed in some eucrites.. Recently, we added an extra dimension to discussion (epsilon)54Cr same with known (delta)17O compare normal eucrites. combined and isotope systematics Pasamonte, PCA 91007, A-881394, Ibitira indicate their likely origin from different bodies than Often qualifier anomalous is used identify HEDs values that deviate significantly (>3(sigma)) mean HED (delta)17O. However, variations diogenites also include unique geochemical characteristics such as bulk composition, trace element abundances, or volatile concentrations, addition Here, investigate three geochemically HEDs: Elephant Moraine (EET) 92023, Graves Nunataks (GRA) 98098, Dhofar 700. In addition, verify homogeneity thus far, set seven considered samples were investigated.