This layer comprises a quality assessment of the compiled data for SCAR GeoMAP v.2022-08geologicaldatasetof Antarctica. It represents an assessment of the extent of data captured, and an assessment of attributed information of this area as a gridded dataset, made by the compiler of this dataset. It is intended that this will provide an indicative assessment of the quality of the dataset for end users, together with information on regions that would benefit from further investigation. These data comprise polygon geometry with each polygon having attributes describing an assessment of quality the encompassed area based on the capture of rock outcrop geology, fault and structural measurement mapping, and supporting comments. Each polygon covers a grid area of 1 degree of longitude and 30 minutes of latitude.
The relative ‘quality’ is ranked on a scale from 5 to 1, where:
5 is highest. Bedrock geology has been captured from mapping at 1:250,000 or more detailed; Cover sequences and occurrence of seasonal water have been reviewed and classified from ground studies, or aerial or satellite imagery; faults and structural data have been captured; rock outcrop polygon areas have been checked against LIMA or other satellite imagery (accurate to +/-100m); links to a source bibliography are complete.
4. Bedrock geology has been captured from mapping at regional scale (mostly less than 1:250,000); Cover sequences and occurrence of seasonal water have been reviewed and classified from aerial or satellite imagery, but there may not be local studies to constrain age; faults and structural datawill generallyhave been captured; rock outcrop polygon areas have been checked against LIMA or other satellite imagery (accurate to +/-200m); links to a source bibliography are complete.
3. Bedrock geology has been captured from mapping at regional scale (mostly greater than 1:250,000); Cover sequences and seasonal water have been mapped but information for classification is limited; some faults and structural data have been captured; there has been some checking of rock outcrop polygon areas against satellite imagery (accurate to +/-500m); further links to bibliographic sources could be added.
2. Bedrock geology may be well-constrained, or alternatively interpreted at large scale mapping (e.g. greater than 1:1,000,000); There has been very limited review of cover sequences and seasonal water; faults and structural data are unlikely to have been captured; rock outcrop polygon areas could be improved by checking against satellite imagery (only accurate to +/-1000m).
1. is lowest. Quality rank refers to the early stages of work where little or no information has been attributed to rock outcrop polygons; and polygons have not been checked for their locational position and/or shape. In some places there is no information to assign (where outcrops may not have been visited or had geology inferred) in which case polygons have been attributed as ‘unknown’.
There are no places where an entire 1 degree grid polygon is unknown, so GeoMAP v.2022-08does nothave any areas quality=1. A quality rank of 0 indicates that no mapable geological feature is recorded in this area.
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This layer is a geological map bibliography for Antarctica. It was produced by GNS Science in conjunction with partners in the SCAR GeoMAP project. It represents the sources referred to in the classification of geological map polygons. This layer depicts a selection of key maps, as polygon outlines with data providing links to original bibliographic source, that have been useful to the GeoMAP team. It shows the majority of, but not necessarily all, geological maps available for Antarctica. The dataset comprises polygons with each having attributes describing the source's authors, title, publication, year, program and scale of publication. The data structure complies with the GeoSciML 4.1 standard where relevant and uses the relevant CGI Controlled Vocabularies.
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This layer comprises a simplified lithology version of the geological unit data for Antarctica. It represents a synthesis of existing published and unpublished mapping of the geology of this area in a single dataset at a regional scale. These data comprise polygon geometry with each polygon having attributes describing the unit type, name, age, lithology, stratigraphy, and supporting background information, where this is known. This layer complies with the GeoSciML Lite (version 4.1) standard for GeologicalUnitView and fields required by that standard were populated using the CGI Controlled Vocabulary (version 2016.01).
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This layer comprises a simplified geology version of the geological unit data for Antarctica. It represents a synthesis of existing published and unpublished mapping of the geology of this area in a single dataset at a regional scale. These data comprise polygon geometry with each polygon having attributes describing the unit type, name, age, lithology, stratigraphy, and supporting background information, where this is known. This layer complies with the GeoSciML Lite (version 4.1) standard for GeologicalUnitView and fields required by that standard were populated using the CGI Controlled Vocabulary (version 2016.01).
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This layer comprises geological unit data for Antarctica. It represents a synthesis of existing published and unpublished mapping of the geology of this area in a single dataset at a regional scale. These data comprise polygon geometry with each polygon having attributes describing the unit type, name, age, lithology, stratigraphy, and supporting background information, where this is known. This layer complies with the GeoSciML Lite (version 4.1) standard for GeologicalUnitView and fields required by that standard were populated using the CGI Controlled Vocabulary (version 2016.01).
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This layer comprises geological unit data for Antarctica. It represents a synthesis of existing published and unpublished mapping of the geology of this area in a single dataset at a regional scale. These data comprise polygon geometry with each polygon having attributes describing the unit type, name, age, lithology, stratigraphy, and supporting background information, where this is known. This layer complies with the GeoSciML Lite (version 4.1) standard for GeologicalUnitView and fields required by that standard were populated using the CGI Controlled Vocabulary (version 2016.01).
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This layer comprises the faults data for Antarctica. It represents a synthesis of existing published and unpublished mapping of faulting in this area in a single dataset at a regional scale. While it includes some structures interpreted from geophysical datasets, or inferred from continental-scale syntheses, the focus has been a capture of data from geological observations and geological mapping. The dataset comprises arcs with each arc having attributes describing the locational accuracy, exposure, activity, type of fault, and the sense of movement of the fault, where this is known. This layer complies with the GeoSciML Lite standard for ShearDisplacementStructureView and fields required by that standard were populated using the CGI Controlled Vocabulary (v2016.01).
The GeoMAP dataset was produced as part of the Regional Geological Map Archive and Datafile, one of the Nationally Significant Collections and Databases supported by the New Zealand Government’s Strategic Science Investment Fund (contract C05X1701).
DOI https://doi.org/10.21420/7SH7-6K05
This vector data layer spatially represents a geological legend depicting the exposed rock outcrop and covering sediments on Antarctica, to match the simple geological units. It illustrates the representative age and type of rock in the approximate location that the exposure occurs. This geological data was constructed using EPSG:4978 (WGS 84). It is also suitable for projection in EPSG:3031 (WGS 84/Antarctic Polar Stereographic).
DOI https://doi.org/10.21420/7SH7-6K05
This vector data layer represents a geological legend depicting the exposed rock outcrop and covering sediments on Antarctica, rendered with lithostratigraphic symbology. It illustrates the representative age and type of rock in the approximate location that the exposure occurs. This geological data was constructed using EPSG:4978 (WGS 84). It is also suitable for projection in EPSG:3031 (WGS 84/Antarctic Polar Stereographic).
DOI https://doi.org/10.21420/7SH7-6K05
This vector data layer represents a geological legend depicting the exposed rock outcrop and covering sediments on Antarctica, rendered with chronostratigraphic symbology. It illustrates the representative age and type of rock in the approximate location that the exposure occurs. This geological data was constructed using EPSG:4978 (WGS 84). It is also suitable for projection in EPSG:3031 (WGS 84/Antarctic Polar Stereographic).
DOI https://doi.org/10.21420/7SH7-6K05
This vector data layer spatially represents chronostratigraphic grid based on the International Chronostratigraphic Chart (v 2021/10). Updates to this information areavailable at www.stratigraphy.org. This gridwas constructed using EPSG:4978 (WGS 84). It is also suitable for projection in EPSG:3031 (WGS 84/Antarctic Polar Stereographic).
DOI https://doi.org/10.21420/7SH7-6K05
This vector data layer spatially represents a subdivision of geologic ages using the framework of the International Geological Time Scale. It depicts a standard scale used to express the history of the Earth. This layer was constructed using EPSG:4978 (WGS 84). It is also suitable for projection in EPSG:3031 (WGS 84/Antarctic Polar Stereographic).
DOI https://doi.org/10.21420/7SH7-6K05