Source materials for inception stage Hawaiian magmas: Pb‐He isotope variations for early Kilauea
March 11, 2010
New noble gas and radiogenic isotopic compositions are presented for tholeiitic, transitional, and alkalic rocks from the submarine Hilina region on the south flank of Kilauea, Hawaii. The 3He/4He ratios for undegassed glass and olivine separates (11–26 Ra) contrast with those of postshield and rejuvenated alkalic lavas, consistent with the alkalic and transitional basalts at Hilina corresponding to early Kilauea magmas. Most early Kilauea samples contain highly radiogenic Pb isotopes compared with other Hawaiian rocks and therefore derive from a Hawaiian plume end‐member source (here referred to as the Hilina component) distinctive in that respect. Besides radiogenic Pb isotopes, the Hilina component has relatively low 3He/4He (
Citation Information
| Publication Year | 2010 |
|---|---|
| Title | Source materials for inception stage Hawaiian magmas: Pb‐He isotope variations for early Kilauea |
| DOI | 10.1029/2009GC002760 |
| Authors | Takeshi Hanyu, Jun-Ichi Kimura, Maiko Katakuse, Andrew T. Calvert, Thomas W. Sisson, Shun’ichi Nakai |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Geochemistry, Geophysics, Geosystems |
| Index ID | 70198308 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Volcano Science Center |