Chemistry of particles from the Toba ash layer
Fuente:
PANGAEA
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
2000
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867167662862237696 |
|---|---|
| author | Bühring, Christian Sarnthein, Michael ODP Leg 184 Shipboard Scientific Pary |
| author_facet | Bühring, Christian Sarnthein, Michael ODP Leg 184 Shipboard Scientific Pary |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Two cores from the southern South China Sea contain discrete ash layers that mainly consist of rhyolithic glass shards. On the basis of the SPECMAP time scale, the ash layers were dated to ca. 74 ka, the age of the youngest Toba eruption in northern Sumatra. This link is supported by the chemical composition of the glass, which is distinct from volcanic glass supplied from the Philippines and the northern South China Sea, but is almost identical with the chemistry of the Toba ash. The youngest Toba ash layers in the South China Sea expand the previously known ash-fall zone over more than 1800 km to the east. The dispersal of ashes from Sumatra in both western and eastern directions indicates two contrasting wind directions and suggests that (1) the Toba eruption probably happened during the Southeast Asian summer monsoon season, and (2) the volume of erupted magma was larger than previously interpreted. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_736631 |
| institution | PANGAEA |
| language | en |
| publishDate | 2000 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Chemistry of particles from the Toba ash layer Bühring, Christian Sarnthein, Michael ODP Leg 184 Shipboard Scientific Pary GIK/IfG; GIK17961-2; GIK17962-4; Gravity corer (Kiel type); Institute for Geosciences, Christian Albrechts University, Kiel; KOL; MONITOR MONSUN; Ocean Drilling Program; ODP; Piston corer (Kiel type); SL; SO95; Sonne; South China Sea Two cores from the southern South China Sea contain discrete ash layers that mainly consist of rhyolithic glass shards. On the basis of the SPECMAP time scale, the ash layers were dated to ca. 74 ka, the age of the youngest Toba eruption in northern Sumatra. This link is supported by the chemical composition of the glass, which is distinct from volcanic glass supplied from the Philippines and the northern South China Sea, but is almost identical with the chemistry of the Toba ash. The youngest Toba ash layers in the South China Sea expand the previously known ash-fall zone over more than 1800 km to the east. The dispersal of ashes from Sumatra in both western and eastern directions indicates two contrasting wind directions and suggests that (1) the Toba eruption probably happened during the Southeast Asian summer monsoon season, and (2) the volume of erupted magma was larger than previously interpreted. |
| title | Chemistry of particles from the Toba ash layer |
| topic | GIK/IfG; GIK17961-2; GIK17962-4; Gravity corer (Kiel type); Institute for Geosciences, Christian Albrechts University, Kiel; KOL; MONITOR MONSUN; Ocean Drilling Program; ODP; Piston corer (Kiel type); SL; SO95; Sonne; South China Sea |
| url | https://doi.org/10.1594/PANGAEA.736631 |