Map services

In map services, you can find a large amount of observation and measurement data in visual format. The datasets have been grouped into themes according to their purpose of use, including mineral deposits, bedrock surveying, and peatland surveys. In map services, you can activate the map layers you want, zoom in or out to any scale, and click objects for more information.

Metallic minerals, industrial minerals and ore prospecting

Mineral Deposits and Exploration (MDaE)

MDaE is an online map service covering Finland and showing the locations of known ore and industrial mineral deposits.

Enter map service

Fennoscandian Mineral Deposits application

Includes mineral deposits, mines, metallogenic maps as well as geological and geophysical maps from the Fennoscandian Peninsula. It also provides links to downloadable map files, a database and summaries of information about critical minerals.

Access database

MPM Online Tool

MPM Online Tool is a web tool for using GTK’s spatial data products with the spatial analysis functions of the ArcGIS software family and for assessing possible ore prospecting areas in northern Finland.

Use tool

Mineral Systems in Finland

The online service contains systematically organized and maintained data for various types of mineral systems and aims to support identification of new mineral exploration targets in Finland.

Access service

Bedrock surveying

Bedrock of Finland

A search service for Bedrock of Finland 1:200,000 and geological units (Finstrati), as well as related electronic publications.


Water management


The Lähde online service collects and provides access to the results of ground water surveys conducted by GTK. The service also includes general information on Finland’s groundwater bodies.

Access Lähde

Soil and bedrock, construction and land use planning

Ground properties

Map services providing the latest information on Finnish ground and bedrock. The map includes an elevation model based on the National Land Survey of Finland’s laser scanning data.

View map

Ground investigations

A service for viewing and downloading data on ground investigations collected from various sources.

Browse data

Geochemical baselines (TAPIR)

The map service calculates regional geochemical baselines in soil on the basis of concentration observations saved in a database.

Access service

Peatland surveys

Terms of use of products and services

Datasets and spatial data products are largely owned by GTK, and their use is subject to certain conditions and practices. The PDF files below indicate how and where you can use GTK’s datasets.



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