Zircon age data as gathered from literature and GEUS samples

The Raw stream sediment samples dataset is data as they have been delivered from the laboratories, i.e. values below detection limit often spelled as negative but zero may also apply. The data are not controlled by a geologist. In addition, they may not have been reported.

Non-confidential mineral exploration licence reports and other geoscientific reports have been recieved by Greenlandic authorities and subsequently send to GEUS in accordance with the Mineral Resources Act of Greenland (1 January 2010) and associated regulations. This dataset allows to search in the database using alphanumeric and geographic search criteria and to access report metadata. It is also possible to download the actual report as a PDF file.

This view presents data selected from the geochemical mapping of North Greenland that are relevant for an evaluation of the potential for zinc mineralisation: CaO, K2O, Ba, Cu, Sr, Zn. The data represent the most reliable analytical values from 2469 stream sediment and 204 soil samples collected and analysed over a period from 1978 to 1999 plus a large number of reanalyses in 2011. The compiled data have been quality controlled and calibrated to eliminate bias between methods and time of analysis as described in Thrane et al., 2011. In the present dataset, all values below lower detection limit are indicated by the digit 0. Sampling The regional geochemical surveys undertaken in North Greenland follows the procedure for stream sediment sampling given in Steenfelt, 1999. Thrane et al., 2011 give more information on sampling campaigns in the area. The sample consists of 500 g sediment collected into paper bags from stream bed and banks, alternatively soil from areas devoid of streams. The sampling density is not consistent throughout the covered area and varies from regular with 1 sample per 30 to 50 km2 to scarce and irregular in other areas. Analyses were made on screened < 0.1 mm or <0.075 mm grain size fractions.

The AEM Greenland 19941998 are detailed surveys with combined electromagnetic and magnetic measurements that were carried out within a collaboration between GEUS/GGU and the Greenland Government in six selected areas of expected high mineral potential in Greenland. In total, 75 000 line km covering an area of 23 000 km² were measured in the project. Line spacing was 200 400 m (inline direction) and flight altitudes were typically around 120 m. With exception of one survey the collected electromagnetic data were time-domain data (GEOTEM system).

Dataset containing a summary of geological information for known mineral occurrences on Greenland. The information includes the location, size, mineral commodities, mineralisation type, exploration history and a geological description of the deposit. The data has been collected and compiled from fieldwork investigations conducted by geological surveys, academic researchers and mineral exploration companies.

The National well database (Jupiter) among other things contains water level measurements from Danish wells. The database contains water level measurements from the municipalities, the groundwater-monitoring program, the regions soil pollution investigations and from the establishment of new wells. The database is updated on an ongoing basis.

All active exploration licences. The data are converted from the WFS that th ministery of mineral resources (MMR) in Greenland provides. Links are provided in the online resources

All active small scale licences. The data are converted from the WFS that th ministery of mineral resources (MMR) in Greenland provides. Links are provided in the online resources

The area in South-East Greenland between 62°30’N and 66°30’N was targeted for its mineralisation potential through data collection and renewed mapping during the collaborative ‘SEGMENT’ project (2009-2014) between the Geological Survey of Denmark and Greenland (GEUS) and the Bureau of Minerals and Petroleum (BMP, now Ministry of Mineral Resources, MMR). The main aims of the ‘SEGMENT’ project included: • Compiling a regional stream sediment geochemical and till indicator mineral survey; • Compiling a regional aeromagnetic survey of South-East Greenland; • Conduct geological field investigations in order to characterise the main lithology and as the basis for geological research, including petrology, structural geology, geochemistry and geochronology; • Evaluate economic geology and mineral potential through field investigations, using geological parameter in order to be able to predict possible mineralisation; • Revise the existing 1:500 000 geological map of South-East Greenland; and • Integrated data interpretation to describe and provide a geological model for the geological evolution of South-East Greenland and assess the mineral of potential of the region. The details behind the data collection and mapping efforts under the ‘SEGMENT’ project are summarized in the GEUS report by Kolb et al. (2016) which provides an overview of the geology and the lithological units within the mapping area between 62°N and 66°30’N.