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:> 37 000 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 partyGeological Survey of Finland, geodata gtk.fi
Contact person:Marko Puonti
Metadata date:2020-01-15