Bedrock samples for chronological dating

Summary of dataset content:	Whole rock grab samples and the separation products produced during the processing of the samples.
Original application:	Determining the geological age of rocks.
Spatial data product related to the dataset:	Bedrock isotope dataset (Hakku)
Analysis information for the dataset:	The information given consists of location data, rock type, method, the mineral analysed, dating results, comments and references. “Published Sm-Nd isotope data" comprises Sm-Nd data produced at GTK since 1981 that is mostly used to constrain the origin of crust.
Volume:	2550 samples
Resolution (sample density):	Irregular, target scale
Geographic coverage:	National
Sampling years (time reference):	Ongoing since 1964
Physical form and storage conditions for the samples:	Rock samples (grab samples) packed in wooden crates and processing products packed in small plastic containers.
Sample identification:	Laboratory number
Resource address:	Sampling points and analysis findings on a map: http://gtkdata.gtk.fi/mdae/index.html
Location of the dataset:	Otaniemi, Espoo
Keywords:	bedrock, absolute age, isotopes, chronological dating
Historical information:	http://tupa.gtk.fi/paikkatieto/meta/isotope_data_of_finnish_bedrock.html
Availability and terms of use / public availability restrictions:	By separate agreement
Responsible party	Geological Survey of Finland, geodata gtk.fi
Metadata date:	2020-01-17