(Table 1) 40Ar/39Ar plateau and isochron ages for basalts from the Réunion hotspot track
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| Autores principales: | , |
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
| Publicado: |
PANGAEA
1990
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| _version_ | 1867171775053299712 |
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| author | Duncan, Robert A Hargraves, Robert B |
| author_facet | Duncan, Robert A Hargraves, Robert B |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Concordant plateau and isochron ages were calculated from 40Ar/39Ar incremental heating experiments on volcanic rocks recovered by drilling at four Leg 115 sites and two industry wells along the volcanic lineament connecting Reunion Island to the Deccan flood basalts, western Indian Ocean. The new ages provide unequivocal evidence that volcanic activity migrated southward along this sequence of linear ridges. The geometry and age distribution of volcanism are most compatible with origin above a stationary hotspot centered beneath Reunion. The hotspot became active with rapid eruption of the Deccan flood basalts, western India, and subsequent volcanic products record the northward motion of the Indian and African plates over the hotspot through Tertiary time. The radiometric ages are in general accord with basal biostratigraphic age estimates, although some adjustments in current magnetobiostratigraphic time scales may be required. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_756141 |
| institution | PANGAEA |
| language | en |
| publishDate | 1990 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1) 40Ar/39Ar plateau and isochron ages for basalts from the Réunion hotspot track Duncan, Robert A Hargraves, Robert B 115-706C; 115-707C; 115-713A; 115-715A; Age, dated; Age, dated, standard deviation; Argon-39; Argon-40/Argon-36 ratio; Argon-40/Argon-36 ratio, standard deviation; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; F-distribution; Indian Ocean; Joides Resolution; Laboratory; Lakshadweep Sea; Leg115; Ocean Drilling Program; ODP; Sample amount; Sample code/label; South Indian Ridge, South Indian Ocean Concordant plateau and isochron ages were calculated from 40Ar/39Ar incremental heating experiments on volcanic rocks recovered by drilling at four Leg 115 sites and two industry wells along the volcanic lineament connecting Reunion Island to the Deccan flood basalts, western Indian Ocean. The new ages provide unequivocal evidence that volcanic activity migrated southward along this sequence of linear ridges. The geometry and age distribution of volcanism are most compatible with origin above a stationary hotspot centered beneath Reunion. The hotspot became active with rapid eruption of the Deccan flood basalts, western India, and subsequent volcanic products record the northward motion of the Indian and African plates over the hotspot through Tertiary time. The radiometric ages are in general accord with basal biostratigraphic age estimates, although some adjustments in current magnetobiostratigraphic time scales may be required. |
| title | (Table 1) 40Ar/39Ar plateau and isochron ages for basalts from the Réunion hotspot track |
| topic | 115-706C; 115-707C; 115-713A; 115-715A; Age, dated; Age, dated, standard deviation; Argon-39; Argon-40/Argon-36 ratio; Argon-40/Argon-36 ratio, standard deviation; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; F-distribution; Indian Ocean; Joides Resolution; Laboratory; Lakshadweep Sea; Leg115; Ocean Drilling Program; ODP; Sample amount; Sample code/label; South Indian Ridge, South Indian Ocean |
| url | https://doi.org/10.1594/PANGAEA.756141 |