Geochemistry of picrite basalts from the Liohi Volcano
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1998
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| _version_ | 1867169503345901568 |
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| author | Matveenkov, Vladimir V Sorokhtin, Oleg G |
| author_facet | Matveenkov, Vladimir V Sorokhtin, Oleg G |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Research of the ocean floor using the Mir submersibles carried out south of the Hawaiian Archipelago allowed to recover flows of recent picrite basalts. Lava vents are confined to a field of development of open fractures of a gjar type. Basalts represent initial lava flows in the structure of the Hawaiian volcanic archipelago. Considering contents of alkali and rare-earth elements in them, the picrite basalts of the bottom could be assigned to a series of island tholeiites. They are products of high level melting of asthenospheric matter at depth about 75-80 km as a result of decompression near a deep fracture that occurred in the lithosphere and asthenosphere. Similar picrite basalts were found in the base of the youngest volcano of the Hawaiian chain the Loihi Volcano. With respect to contents of alkali metals, these rocks are assigned to the subalkaline series of rocks formed during melting of garnet lherzolites. This could probably be explained by supply of melts from deeper levels of the asthenosphere after partial packing of an initial magma effluent fracture. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_760613 |
| institution | PANGAEA |
| language | en |
| publishDate | 1998 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Geochemistry of picrite basalts from the Liohi Volcano Matveenkov, Vladimir V Sorokhtin, Oleg G AMK22-2335-38; Archive of Ocean Data; ARCOD; Loihi Volcano; MIR; MIR deep-sea manned submersible Research of the ocean floor using the Mir submersibles carried out south of the Hawaiian Archipelago allowed to recover flows of recent picrite basalts. Lava vents are confined to a field of development of open fractures of a gjar type. Basalts represent initial lava flows in the structure of the Hawaiian volcanic archipelago. Considering contents of alkali and rare-earth elements in them, the picrite basalts of the bottom could be assigned to a series of island tholeiites. They are products of high level melting of asthenospheric matter at depth about 75-80 km as a result of decompression near a deep fracture that occurred in the lithosphere and asthenosphere. Similar picrite basalts were found in the base of the youngest volcano of the Hawaiian chain the Loihi Volcano. With respect to contents of alkali metals, these rocks are assigned to the subalkaline series of rocks formed during melting of garnet lherzolites. This could probably be explained by supply of melts from deeper levels of the asthenosphere after partial packing of an initial magma effluent fracture. |
| title | Geochemistry of picrite basalts from the Liohi Volcano |
| topic | AMK22-2335-38; Archive of Ocean Data; ARCOD; Loihi Volcano; MIR; MIR deep-sea manned submersible |
| url | https://doi.org/10.1594/PANGAEA.760613 |