Strontium and rubidium concentrations of ODP Site 104-642 (Table 1)
Fuente:
PANGAEA
Enregistré dans:
| Auteurs principaux: | , , |
|---|---|
| Format: | Dataset Open Access |
| Langue: | en |
| Publié: |
PANGAEA
1989
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1867171766118383616 |
|---|---|
| author | Smalley, P Craig Qvale, G Qvale, H |
| author_facet | Smalley, P Craig Qvale, G Qvale, H |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We have attempted to date several samples from Site 642 using a combination of Sr isotope stratigraphy and Rb-Sr dating of glauconite. A carbonate shell fragment from Sample 104-642B-22H-6, 70-73 cm gives a Sr isotope stratigraphy date of 17.3 +/- 1.0 Ma, which agrees well with available biostratigraphic and paleomagnetic data. Glauconites from a nearby sample (104-642B-23H-1, 66-69 cm) give a similar date. One carbonate shell fragment and two fish teeth samples from Core 104-642D-12X give concordant Sr isotope stratigraphy ages of about 37 Ma (latest Eocene). Rb-Sr glauconite analyses from one of the samples, while showing some substrate contamination, also support an Eocene age. Our results are in conflict with Miocene palynomorph dates from Core 104-642D-12X. As specific reworking of fish teeth and carbonate macrofossils (and also glauconite) from 37 Ma old sediments into three different samples in Core 104-642D-12X is most unlikely, we view the 37-Ma date as the depositional age of the core. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_736458 |
| institution | PANGAEA |
| language | en |
| publishDate | 1989 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Strontium and rubidium concentrations of ODP Site 104-642 (Table 1) Smalley, P Craig Qvale, G Qvale, H 104-642B; 104-642D; Age, dated; Age, dated, standard deviation; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Isotope dilution; Joides Resolution; Leg104; Material; Norwegian Sea; Ocean Drilling Program; ODP; Rubidium; Rubidium/Strontium ratio; Rubidium-87/Strontium-86 ratio; Sample code/label; Strontium; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error We have attempted to date several samples from Site 642 using a combination of Sr isotope stratigraphy and Rb-Sr dating of glauconite. A carbonate shell fragment from Sample 104-642B-22H-6, 70-73 cm gives a Sr isotope stratigraphy date of 17.3 +/- 1.0 Ma, which agrees well with available biostratigraphic and paleomagnetic data. Glauconites from a nearby sample (104-642B-23H-1, 66-69 cm) give a similar date. One carbonate shell fragment and two fish teeth samples from Core 104-642D-12X give concordant Sr isotope stratigraphy ages of about 37 Ma (latest Eocene). Rb-Sr glauconite analyses from one of the samples, while showing some substrate contamination, also support an Eocene age. Our results are in conflict with Miocene palynomorph dates from Core 104-642D-12X. As specific reworking of fish teeth and carbonate macrofossils (and also glauconite) from 37 Ma old sediments into three different samples in Core 104-642D-12X is most unlikely, we view the 37-Ma date as the depositional age of the core. |
| title | Strontium and rubidium concentrations of ODP Site 104-642 (Table 1) |
| topic | 104-642B; 104-642D; Age, dated; Age, dated, standard deviation; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Event label; Isotope dilution; Joides Resolution; Leg104; Material; Norwegian Sea; Ocean Drilling Program; ODP; Rubidium; Rubidium/Strontium ratio; Rubidium-87/Strontium-86 ratio; Sample code/label; Strontium; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error |
| url | https://doi.org/10.1594/PANGAEA.736458 |