Bibliographic Details
| Title: |
The composition and distribution of the rejuvenated component across the Hawaiian plume: Hf‐Nd‐Sr‐Pb isotope systematics of Kaula lavas and pyroxenite xenoliths |
| Authors: |
Michael Bizimis, Vincent J. M. Salters, Michael O. Garcia, Marc D. Norman |
| Source: |
Geochemistry, Geophysics, Geosystems, Vol 14, Iss 10, Pp 4458-4478 (2013) |
| Publisher Information: |
Wiley, 2013. |
| Publication Year: |
2013 |
| Collection: |
LCC:Geophysics. Cosmic physics
LCC:Geology |
| Subject Terms: |
pyroxenite, xenolith, rejuvenated volcanism, mantle plume, Kaula, plume structure, Geophysics. Cosmic physics, QC801-809, Geology, QE1-996.5 |
| More Details: |
Rejuvenated volcanism refers to the reemergence of volcanism after a hiatus of 0.5–2 Ma following the voluminous shield building stage of Hawaiian volcanoes. The composition of the rejuvenated source and its distribution relative to the center of the plume provide important constraints on the origin of rejuvenated volcanism. Near‐contemporaneous lavas from the Kaula‐Niihau‐Kauai ridge and the North Arch volcanic field that are aligned approximately orthogonally to the plume track can constrain the lateral geochemical heterogeneity and distribution of the rejuvenated source across the volcanic chain. Nephelinites, phonolites and pyroxenite xenoliths from Kaula Island have radiogenic Hf, Nd and unradiogenic Sr isotope compositions consistent with a time‐integrated depleted mantle source. The pyroxenites and nephelinites extend to the lowest 208Pb/204Pb reported in Hawaiian rocks. These data, along with new Pb isotope data from pyroxenites from the Salt Lake Crater (Oahu) redefine the composition of the depleted end‐member of the Hawaiian rejuvenated source at 208Pb/204Pb=37.35±0.05, 206Pb/204Pb = 17.75±0.03, εNd = 9–10, εHf ∼16–17 and 87Sr/88Sr |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
1525-2027 |
| Relation: |
https://doaj.org/toc/1525-2027 |
| DOI: |
10.1002/ggge.20250 |
| Access URL: |
https://doaj.org/article/f20e8d5945cf41d083946e88b044dd28 |
| Accession Number: |
edsdoj.f20e8d5945cf41d083946e88b044dd28 |
| Database: |
Directory of Open Access Journals |
