(Table 1) Age determination of glass-samples from ODP Hole 135-841B
Fuente:
PANGAEA
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1994
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1867171810952347648 |
|---|---|
| author | McDougall, Ian |
| author_facet | McDougall, Ian |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Several samples from the rhyolitic lavas encountered in Hole 841 B in the Tonga Forearc were made available by A. Ewart for potassiumargon (K-Ar) dating in an attempt to constrain the age of the eruptions. The material was supplied in crushed form and consisted primarily of volcanic glass together with some microphenocrysts made up mainly of plagioclase and quartz. Plagioclase could not be separated in sufficient amount for dating, especially as the potassium content of the plagioclase was quite low (~0.055% K). Petrographic examination of the volcanic glass indicated that it was remarkably fresh: it was clear, unaltered, and essentially isotopic. Thus, it was decided to attempt to date the volcanic glass. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_803544 |
| institution | PANGAEA |
| language | en |
| publishDate | 1994 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) Age determination of glass-samples from ODP Hole 135-841B McDougall, Ian 135-841B; Age, 40K/40Ar Potassium-Argon; Age, dated; Age, dated, standard deviation; Argon-40; Argon-40, radiogenic/Argon-40, total; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg135; Ocean Drilling Program; ODP; Potassium; Sample code/label; Sample ID; South Pacific Ocean Several samples from the rhyolitic lavas encountered in Hole 841 B in the Tonga Forearc were made available by A. Ewart for potassiumargon (K-Ar) dating in an attempt to constrain the age of the eruptions. The material was supplied in crushed form and consisted primarily of volcanic glass together with some microphenocrysts made up mainly of plagioclase and quartz. Plagioclase could not be separated in sufficient amount for dating, especially as the potassium content of the plagioclase was quite low (~0.055% K). Petrographic examination of the volcanic glass indicated that it was remarkably fresh: it was clear, unaltered, and essentially isotopic. Thus, it was decided to attempt to date the volcanic glass. |
| title | (Table 1) Age determination of glass-samples from ODP Hole 135-841B |
| topic | 135-841B; Age, 40K/40Ar Potassium-Argon; Age, dated; Age, dated, standard deviation; Argon-40; Argon-40, radiogenic/Argon-40, total; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg135; Ocean Drilling Program; ODP; Potassium; Sample code/label; Sample ID; South Pacific Ocean |
| url | https://doi.org/10.1594/PANGAEA.803544 |