Saved in:
| Main Author: | |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
1991
|
| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.758111 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867169503053348864 |
|---|---|
| author | Alibert, Chantal |
| author_facet | Alibert, Chantal |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The Lower Cretaceous tholeiitic basalt cored at Site 738, on the southernmost part of the Kerguelen Plateau, shows anomalous Sr, Nd, and Pb isotopic compositions compared to other lavas from Kerguelen Island and the Kerguelen Plateau. The strongly negative value of eNd (– 8.5) and high 207Pb/204Pb ratio (15.71) reflect a long-term evolution in a source high in Nd/Sm and µ. These geochemical properties, not observed in the Indian Ocean mantle plumes (St. Paul, Kerguelen Islands), have been reported for alkali lavas erupted in East Antarctica, thus suggesting that they originate from the Gondwana subcontinental lithosphere. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_758111 |
| institution | PANGAEA |
| language | en |
| publishDate | 1991 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Mineralogy and geochemistry of a basalt from ODP Hole 119-738C Alibert, Chantal 119-738C; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Ocean Drilling Program; ODP The Lower Cretaceous tholeiitic basalt cored at Site 738, on the southernmost part of the Kerguelen Plateau, shows anomalous Sr, Nd, and Pb isotopic compositions compared to other lavas from Kerguelen Island and the Kerguelen Plateau. The strongly negative value of eNd (– 8.5) and high 207Pb/204Pb ratio (15.71) reflect a long-term evolution in a source high in Nd/Sm and µ. These geochemical properties, not observed in the Indian Ocean mantle plumes (St. Paul, Kerguelen Islands), have been reported for alkali lavas erupted in East Antarctica, thus suggesting that they originate from the Gondwana subcontinental lithosphere. |
| title | Mineralogy and geochemistry of a basalt from ODP Hole 119-738C |
| topic | 119-738C; DRILL; Drilling/drill rig; Indian Ocean; Joides Resolution; Leg119; Ocean Drilling Program; ODP |
| url | https://doi.org/10.1594/PANGAEA.758111 |