Abstract
In this contribution we present data collected by more than 50 international geologists involved in geological mapping and research projects in the Nagssugtoqidian orogen of West Greenland, organised by the Geological Survey of Denmark and Greenland and the Danish Lithosphere Centre. Using a geographical information system (GIS) as a framework for visualisation and analysis of structural and lithological data, it is now possible to give a unique overview of thousands of data points, employed here within a study area of approximately 160 × 180 km in the central and northern Nagssugtoqidian orogen. The GIS methodology allows comparison, integration and analysis of datasets in terms of subject, space, and scale. This is extremely helpful in the recognition of geological patterns, such as terrain or domain boundaries and map-scale structures. Analysis of the available structural data shows clear differences in deformation patterns between the core and the northern segment of the Nagssugtoqidian orogen. One of the most prominent features is the ENE-striking Nordre Strømfjord shear zone, which transects the orogen from the coast to the Inland Ice. The data also clearly document a change from predominantly steeply dipping, ENE–WSW-trending fabrics and large, elongate structural domains in the core of the orogen, to large, open fold patterns and moderately to shallowly dipping fabrics in smaller structural domains in the north.
Highlights
In this contribution we present data collected by more than 50 international geologists involved in geological mapping and research projects in the Nagssugtoqidian orogen of West Greenland, organised by the Geological Survey of Denmark and Greenland and the Danish Lithosphere Centre
The research was undertaken in two projects, organised by the Danish Lithosphere Centre (DLC) from 1994 to 1999 and the Geological Survey of Denmark and Greenland (GEUS) from 2000 to 2003, respectively
The 1960s and 1970s by the former Geological Survey of Greenland (GGU, part of GEUS). Part of this was used by the collectors in their individual research or in small groups, and for the compilation of a published geological map, to date only a fraction of the total dataset has been made accessible in publications, and most of the original data collected prior to 2001 are only available for further analysis if extracted from the individual geologists’ field diaries and field maps
Summary
In this contribution we present data collected by more than 50 international geologists involved in geological mapping and research projects in the Nagssugtoqidian orogen of West Greenland, organised by the Geological Survey of Denmark and Greenland and the Danish Lithosphere Centre. The 1960s and 1970s by the former Geological Survey of Greenland (GGU, part of GEUS) Part of this was used by the collectors in their individual research or in small groups, and for the compilation of a published geological map, to date only a fraction of the total dataset has been made accessible in publications, and most of the original data collected prior to 2001 are only available for further analysis if extracted from the individual geologists’ field diaries and field maps. Alternative methods of data compilation and analysis were required
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