Perspectives on basaltic magma crystallization and differentiation: Lava-lake blocks erupted at Mauna Loa volcano summit, Hawaii
January 1, 2006
Explosive eruptions at Mauna Loa summit ejected coarse-grained blocks (free of lava coatings) from Moku'aweoweo caldera. Most are gabbronorites and gabbros that have 0–26 vol.% olivine and 1–29 vol.% oikocrystic orthopyroxene. Some blocks are ferrogabbros and diorites with micrographic matrices, and diorite veins (≤2 cm) cross-cut some gabbronorites and gabbros. One block is an open-textured dunite.
The MgO of the gabbronorites and gabbros ranges ∼ 7–21 wt.%. Those with MgO >10 wt.% have some incompatible-element abundances (Zr, Y, REE; positive Eu anomalies) lower than those in Mauna Loa lavas of comparable MgO; gabbros (MgO
Citation Information
| Publication Year | 2006 |
|---|---|
| Title | Perspectives on basaltic magma crystallization and differentiation: Lava-lake blocks erupted at Mauna Loa volcano summit, Hawaii |
| DOI | 10.1016/j.lithos.2006.03.005 |
| Authors | Renee L. McCarter, R.V. Fodor, Frank A. Trusdell |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | LITHOS |
| Index ID | 70028292 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Volcano Hazards Program |