Poster Number 150
See more from this Division: Topical Sessions
See more from this Session: Whole Earth Systems Science: New Perspectives on the “Rock Cycle” from the Deep Earth to the Atmosphere to Life (Posters)
Abstract:
Eighteen lava samples between latitude 26°30xN and 27°30xN are selected from a large number of samples collected from BO for this study. All samples are analyzed with Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) and Inductively Coupled Plasma Mass Spectroscopy (ICP-MS) for major and trace elements. These samples present a Calc-alkaline trend in AFM diagram, revealing a possibility of SSZ related origin. The spider diagram pattern (normalized to chondrite) shows that these lava samples can be subdivided into two groups: one group with much enriched Light Rare Earth Element (LREE) and positive Nb and Ta anomaly; the other group with negative Nb and Ta anomaly. The first group could be interpreted as of Ocean Island Basalt (OIB) origin, and the second group SSZ related. These primary results reveal there are two different types of magmas, and indicate a different model for the origin of BO.
See more from this Division: Topical Sessions
See more from this Session: Whole Earth Systems Science: New Perspectives on the “Rock Cycle” from the Deep Earth to the Atmosphere to Life (Posters)