Metadata Overview for Tephra "GSQ-53d"
Below is all the metadata supplied for this sample. Some additional metadata has not been made public by the creator(s).
General| Additional Identifier: | https://tiendadigital.sernageomin.cl/en/-basic-geo (URL) |
| Lab ID: | GSQ-53d |
| Comment: | The top is in contact with massive anhydrite, which 'displaces' light brownish silt. The contact is irregular and it appears that the tephra is enclosed by the anhydrite. The anhydrite is interbedded with fine clast-supported sand composed of 'anhydrite clasts'. Below the tephra there is anhydrite or dark brown to reddish silt with apparent organic matter. In some places the tephra is interbedded with sand and contains less biotite than when it is interbedded with anhydrite. Where biotite is abundant it is 0.2-1 mm in size. All lithologies are halite cemented. The tephra is between 3, 4 and 9 cm thick. |
Responsible Party| Creator: | Andrés Quezada (andres.quezada@sernageomin.cl) |
| Contributors: | Project Leader: Volker Wennrich (volker.wennrich@uni-koeln.de), Researcher: Niklas Leicher (n.leicher@uni-koeln.de) |
Collection Details| Collection Site: | GSQ-53 |
| Sample Collection Method: | Manual>Hammer |
| Sample Collection Date: | 11.03.2015 |
| Sampling Method: | Unknown |
Analysis Details| Subsample Count: | 2 |
| Subsample Info: | 1 subsample for geochemical analyses 1 subsample for zircon dating --> but zircons too few and small for (U-Th)/He dating |
| Major/Minor Element Analysis Method: | EPMA-WDS, glass |
| Trace Element Analysis Method: | LA-ICP-MS, glass |
| Isotope Analysis Method: | None |
| Dating Method: | 40Ar/39Ar, Biotite |
