Important Update News
The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.
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| A | This mineral is Anthropogenic. |
| G | This mineral is directly dated. |
| B | This mineral is reported as having this age. |
| Y | This mineral is using an age reported as an element mineralization period. |
| O | This mineral is using an age calculated from all data at the locality. |
| R | The age displayed for this mineral originates from a different, non-child locality. |
| P | The age displayed for this mineral is the range of ages for this mineral at all of this locality's children. |
| This mineral's age has not yet been recorded. |
| Excel ID | Max Age (Ma) | Min Age (Ma) | Age as listed in reference | Dating Method | Age Interpret | Prioritized? | Sample Source | Sample Num | Run Num | Age from other Locality | Dated Mineral | Minerals explicitely stated as having this age | Age applies to these Elements | MinDat Locality ID | Dated Locality (Max Age) | Location as listed in reference | Reference | Reference DOI | Reference ID | Age Notes | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Giersdorf_00000745 | 127.1 | 122.9 | 125±2.1 | K-Ar | The age of ~110 Ma records amphibolite facies metamorphism and the beginning of recorded thermal history. This was followed by a period of rapid cooling until ~90 Ma when cooling rates decreased sharply, suggesting an initial period of unroofing followed | hornblende | PSG-11 | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Integrated K-Ar age | |||||||
| Giersdorf_00000746 | 107.6 | 104.6 | 106.1±1.5 | K-Ar | The age of ~110 Ma records amphibolite facies metamorphism and the beginning of recorded thermal history. This was followed by a period of rapid cooling until ~90 Ma when cooling rates decreased sharply, suggesting an initial period of unroofing followed | hornblende | PSG-11 | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Isochron K-Ar age | |||||||
| Giersdorf_00000747 | 98.5 | 97.9 | 98.2±0.3 | K-Ar | The age of ~110 Ma records amphibolite facies metamorphism and the beginning of recorded thermal history. This was followed by a period of rapid cooling until ~90 Ma when cooling rates decreased sharply, suggesting an initial period of unroofing followed | muscovite | PSG-14 | Muscovite | Muscovite | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Integrated K-Ar age | |||||
| Giersdorf_00000748 | 98.2 | 97.2 | 97.7±0.5 | K-Ar | The age of ~110 Ma records amphibolite facies metamorphism and the beginning of recorded thermal history. This was followed by a period of rapid cooling until ~90 Ma when cooling rates decreased sharply, suggesting an initial period of unroofing followed | muscovite | PSG-14 | Muscovite | Muscovite | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Isochron K-Ar age | |||||
| Giersdorf_00000749 | 90 | 81 | 90-81 | K-Ar | The age spectrum provided by the K-feldspar in the sample is indicative of a rapid cooling | orthoclase | PSG-14 | Orthoclase | Orthoclase | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Age spectrum for K-feldspar | |||||
| Giersdorf_00000757 | 150 | 95 | 150-95 | K-Ar | low | hornblende | SGD-4 | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Age is extracted from the first 15% of the gas released and inconsistent with the result that the remaining 85% of the gas produced. | |||||||
| Giersdorf_00000758 | 111.8 | 109.6 | 110.7±1.1 | K-Ar | high | hornblende | SGD-4 | 296719 | Giles Creek Mine, Reefton, Buller District, West Coast Region, New Zealand | Reefton District | Spell et al. (2000) | 10.1029/1999TC900046 | T19_433 | Isochron K-Ar age age is best estimate for closure of th argon system in this mineral |
| Sample | Source Locality | Reference URL |
|---|---|---|
All locality data graciously provided by mindat.org
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