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Drill cores from deep drilling (Drill Core Archive)
| Summary of dataset content: | Solid rock samples extracted from the bedrock with a core drill that have been taken for the purposes of ore exploration, rock construction and bedrock surveying. |
| Original application: | The samples are used to determine the dominant rock types and valuable minerals from the entire distance of the drill hole, and the structure of the rock types is also observed. Measurements of various rock characteristics will be conducted when necessary and subsamples will be taken for further investigation (e.g. for chemical or microscopic analyses). |
| Spatial data product related to the dataset: | Bedrock drilling (Hakku) |
| Analysis information for the dataset: | The samples in the Drill Core Archive are photographed. Density measurements may also be conducted on the samples. Petrophysical laboratory measurements for drill cores (subject to a fee). |
| Volume: | > 36 000 samples |
| Resolution (sample density): | Irregular, target scale |
| Geographic coverage: | National |
| Sampling years (time reference): | Ongoing since the 1920s |
| Physical form and storage conditions for the samples: | Rock samples (drill cores) packed in wooden crates |
| Sample identification: | Drill hole code |
| Resource address: | Sampling points and analysis findings available on the map service: http://gtkdata.gtk.fi/mdae/index.html |
| Location of the dataset: | Drill Core Archive in Loppi, some in Rovaniemi |
| Keywords: | geology, drilling, deep drilling, drill hole, drill core, lithology, structures, minerals, sampling, analyses, petrophysics, mapping |
| Historical information: | http://tupa.gtk.fi/paikkatieto/meta/national_drill_core_archive.html |
| Availability and terms of use / public availability restrictions: | Archived drill cores can be studied in the research facilities located in Loppi. Research visits are subject to fees for equipment, labour and accommodation as specified in the price list). Subsampling is possible within the scope of the terms and conditions. |
| Responsible party | Geological Survey of Finland, mikko.savolainen@gtk.fi / kairasydanarkisto@gtk.fi |
| Contact person: | Mikko Savolainen |
| Metadata date: | 2020-01-15 |
