Geology of the Larsemann Hills The Geology of the Larsemann Hills, Princess Elizabeth Land, Antarctica GIS dataset contains the spatial data of the basement geology of the Larsemann Hills, along with field site observations. This dataset is derived from the map product ‘Geology of the Larsemann Hills, Princess Elizabeth Land, Antarctica’, published in 2007.Fieldwork supported by Australian Antarctic Science Program Project 2350 and U.S. National Science Foundation OPP-0228842 GIS Dataset Thematic Antarctic data Geology Australian Antarctic Territory Earth Sciences WFS 2.0.0 None Carson, C.J., Woods, M.A., Butcher, G.A., McLennan, S., 2026, Geology of the Larsemann Hills GIS Dataset, Geoscience Australia, Commonwealth of Australia, Canberra.© Commonwealth of Australia (Geoscience Australia) 2026. With the exception of the Commonwealth Coat of Arms and where otherwise noted, this product is provided under a Creative Commons Attribution 4.0 International Licence. (http://creativecommons.org/licenses/by/4.0/legalcode) Geoscience Australia Client Services +61 2 6249 9111 GPO Box 378 Canberra ACT 2601 Australia clientservices@ga.gov.au 1.0.0 1.1.0 2.0.0 text/xml; subtype=gml/3.2 none local results hits GML32 GML32+ZIP GML32+GZIP application/gml+xml; version=3.2 GML3 GML3+ZIP GML3+GZIP text/xml; subtype=gml/3.1.1 GML2 GML2+ZIP GML2+GZIP text/xml; subtype=gml/2.1.2 GEOJSON GEOJSON+ZIP GEOJSON+GZIP ESRIGEOJSON ESRIGEOJSON+ZIP ESRIGEOJSON+GZIP KML application/vnd.google-earth.kml xml application/vnd.google-earth.kml+xml KMZ application/vnd.google-earth.kmz SHAPE+ZIP CSV CSV+ZIP CSV+GZIP Geopackage Geopackage+ZIP none local TRUE FALSE FALSE TRUE TRUE FALSE FALSE FALSE TRUE FALSE FALSE FALSE FALSE FALSE Geology_of_the_Larsemann_Hills:Observations_Larsemann_Hills Observations Larsemann Hills The Geology of the Larsemann Hills, Princess Elizabeth Land, Antarctica GIS dataset contains the spatial data of the basement geology of the Larsemann Hills. This dataset is derived from the map product ‘Geology of the Larsemann Hills, Princess Elizabeth Land, Antarctica’, published in 2007.The Larsemann Hills region is dominated by two major lithological associations, a Mesoproterozoic to Neoproterozoic felsic dominated orthogneiss complex (Søstrene Orthogneiss) which occurs as basement to a sequence of pelitic, psammitic and felsic paragneisses (Brattstrand Paragneiss) and felsic intrusives. Geochonrology indicates that the region experienced medium to low pressure granulite facies metamorphism during the Early Paleozoic (~515-530 Ma). Although the paragneiss sequences record no evidence of earlier metamorphism, relics of a previous metamorphic event at ~1000-950 Ma are preserved in the Søstrene Orthogneiss. Within the Larsemann Hills region, the Early Paleozoic event is characterised by peak metamorphism of ~7 kbar at ~800-850°C, with the post-peak evolution characterised by decompression, with some cooling, to 4 kbars at 750°C, then to 2-3 kbar at 600-650°C during final stages of orogenesis, with exhumation largely driven by crustal extension. The Larsemann Hills are unique for the variety of phosphorous and boron minerals, some of which are found in spectacular specimens, and others of which are not found elsewhere in the world. Three of the nine phosphate minerals found are new to science urn:ogc:def:crs:EPSG::3857 76.03725000 -69.46305000 76.39883000 -69.35911600 Geology_of_the_Larsemann_Hills:Framework_Larsemann_Hills Framework Larsemann Hills The Geology of the Larsemann Hills, Princess Elizabeth Land, Antarctica GIS dataset contains the spatial data of the basement geology of the Larsemann Hills, along with field site observations. This dataset is derived from the map product ‘Geology of the Larsemann Hills, Princess Elizabeth Land, Antarctica’, published in 2007.The Larsemann Hills region is dominated by two major lithological associations, a Mesoproterozoic to Neoproterozoic felsic dominated orthogneiss complex (Søstrene Orthogneiss) which occurs as basement to a sequence of pelitic, psammitic and felsic paragneisses (Brattstrand Paragneiss) and felsic intrusives. Geochonrology indicates that the region experienced medium to low pressure granulite facies metamorphism during the Early Paleozoic (~515-530 Ma). Although the paragneiss sequences record no evidence of earlier metamorphism, relics of a previous metamorphic event at ~1000-950 Ma are preserved in the Søstrene Orthogneiss. Within the Larsemann Hills region, the Early Paleozoic event is characterised by peak metamorphism of ~7 kbar at ~800-850°C, with the post-peak evolution characterised by decompression, with some cooling, to 4 kbars at 750°C, then to 2-3 kbar at 600-650°C during final stages of orogenesis, with exhumation largely driven by crustal extension. The Larsemann Hills are unique for the variety of phosphorous and boron minerals, some of which are found in spectacular specimens, and others of which are not found elsewhere in the world. Three of the nine phosphate minerals found are new to science urn:ogc:def:crs:EPSG::3857 75.95000000 -69.50410881 76.55000000 -69.33000000 Geology_of_the_Larsemann_Hills:Geological_Units_Larsemann_Hills___Polygons Geological Units Larsemann Hills Polygons urn:ogc:def:crs:EPSG::3857 75.97844289 -69.47594452 76.51086824 -69.34240124 TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE FALSE FALSE FALSE TRUE FALSE TRUE FALSE