1453755
Persistent Identifier: https://pid.geoscience.gov.au/sample/AU1453755
| Property | Value |
|---|---|
| id | 1453755 |
| igsn | 10273/AU1453755 |
| sample_id | 40519 |
| eno | 157260 |
| sampling_feature_name | 40519 |
| sampling_feature_type | field site |
| sample_type | outcrop specimen |
| sampling_method | outcrop sampling |
| material_class | rock |
| stratigraphic_unit | Pyengana Granodiorite |
| geological_province | Northeast Tasmania Element |
| sample_remark | McClenaghan & Higgins (1993): The Poimena intrusive phase (Samples 40561, 2012, 2017, 2109, 2008, 2004, MSH182, 166, 175 & 171, 40519, MAL2 & 7) averaged K-Ar ages are: 1.Poimena rock body 377 +/- 4.6 Ma; 2.Pyengana rock body 384 +/- 1.8 Ma and averaged Rb-Sr ages: 1. 376.7 +/- 1 Ma; 2. 377 +/- 1.5 Ma. The Poimena pluton is clearly younger than the biotite granodiorite Pyengana pluton, and also appears to be younger than the Haleys New Country pluton: in each case, the Poimena pluton crosscuts a contact between each pluton and the Mathinna Supergroup. The Pyengana pluton dates have likely been partially reset by thermal or metasomatic effects and it is likely that it is older than is suggested by this data, possibly of a similar age to the George River phase which is chemically similar. The large biotite adamellite Poimena pluton clearly truncates intrusive and faulted boundaries between the Scamander Tier and Mt Pearson bodies, thus showing that it is later than them. In the Poimena area occur a number of minor adamellite intrusions in the Poimena pluton (McClenaghan and Williams, 1982) which are regarded as part of the Poimena pluton. |
| earth_materials | Y |
| structural_measurements | None |
| inorganic_geochemistry | Y |
| organic_geochemistry | None |
| geochronology | None |
| isotope_groups | Y |
| hydrochemistry | None |
| rock_properties | None |
| mineralogy | None |
| thin_sections | None |
| repository_samples | Y |
| mineral_deposit_samples | None |
| mineral_deposit_waste_samples | None |
| linked_files | None |
| other_geological_data | Y |
| project_name | None |
| gda94_longitude | 147.935572 |
| gda94_latitude | -41.3111202 |
| sample_originator | MacKenzie, D.E. |
| date_acquired | None |
| Links |
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