MARINE GEOLOGY & GLACIOLOGY
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GEOLOGICAL WELL SAMPLE LABORATORY |
| Contact and ordering of samplebags |
| Tlf.: 3814 2561 |
| Email: GEUSboreproevelab@geus.dk |
| Sample delivery address: |
| GEUS Varemodtagelse |
| Rigensgade 13, 1316 København K |
| between kl. 8.30 og 16.00 |
Der findes også en dansksproget udgave af denne side!
Samples from every short well are taken from all over Denmark according to Danish laws dating back to 1926 and 1978. Wells are established mainly for new water supplies, although they may also be needed for investigating groundwater resources, raw materials, environmental pollution or geotechnical investigation and their construction is conducted by well drilling companies, engineering companies etc.
The majority of the wells are between 25 and 100 m deep although some can reach depths of 200-300 m below the surface. Samples are collected from every drilled 5 m or from every lithological unit. Most of the samples from the wells represent deposits from the Quaternary. Some samples represent the Palæogene and Neogene (Tertiary) or late Mesozoic (Cretaceous) and a few Palaeozoic and Precambrian deposits.
The rock samples (mainly loose materials) are given systematic, macroscopic sedimentological descriptions, but only qualitatively. This means grainsize, sorting of grainsize, secondary components, structures, colour, hardness, carbonate content, mineral composition and fossils. Finally, the facies conditions of the sediments are taken into consideration and the samples are interpreted lithostratigraphically, biostratigraphically and/or chronostratigraphically.
Samples with a special stratigraphic or environmental value are stored for further investigations or as reference samples.
This geological information is registrered by computer. The geological information is a part of a large well database called Jupiter which contains other geological, hydrogeological and geochemical information as well. Jupiter is a national centralized well database for Denmark in Copenhagen at the National Geological Survey of Denmark and Greenland (GEUS). Part of the database (PC Jupiter) and individual well information is available for purchase by contacting the Well Data Archive
You can read more about soil sample describtion and the work in the Well Sample Laboratory here - but it is in danish!:
- Vejledning i ingeniørgeologisk prøvebeskrivelse, 2009. Dansk Geoteknisk Forening [ LINK ]
- Jordprøver fra grundvandsboringer - Vejledning i udtagning, beskrivelse og geologisk tolkning i felten. Geo-vejledning 1, GEUS 2008. [ LINK ]
- Ret fed og skallet - om borebeskrivelse i GEUS. GeologiskNyt 3/2010 [ LINK ]
- Bare en skallet boreprøve - undersøgelse af fossilindhold i slæmmerest. GeologiskNyt 4/2010 [ LINK ]
- A new Middle Pleistocæne interglacial sequence from Måløv, Sjælland, Denmark. GEUS Bulletin 23, 2011 [ LINK ]
- Borearkivet har 75 års jubilæum. Geologi - nyt fra GEUS nr. 3, november 2001 [ LINK ]
- Announcement to Law of water supply and Law of raw material [ LINK ]
When the grid of borings grow tighter the knowledge of the Danish underground is enlarged. Around five borings per km2 exists in Jupiter-database today. Primary output from the database is a report of the geological well log (in Danish). Geological basis data maps (cyclogram maps), geological profiles (see example below), and other applied geological maps are compiled by the well data. The well data is thereby an important part of the geological evaluation in a great number of scientific projects at the National Geological Survey of Denmark and Greenland. The data is also used in many other connections by engineering companies, the Danish communes etc.
Below is some mayor and newish projects listed, where data from the Jupiter-database is used:
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The geological well logs kan be correlated - above is a correlation panel from west to east through Jutland. From Rasmussen, Dybkjær og Piasecki 2010 (
New miocene lithostratigraphy).
The people in the Well Sample Laboratory:
At the moment the laboratory employes one geologist full time (HJG) and two geologists a few days a month (CDI og AMN). Four student assistants work in the laboratory one day a week. All describtions and logs are looked through by an educated geologist before the geological log is released in the Jupiter-database on the internet.
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