Geology of the Stillwell Hills GIS Dataset

The Stillwell Hills region comprises granulite-facies gneisses which record evidence for multiple episodes of deformation and metamorphism spanning more than 2500 million years. The predominant orthogneiss package (Stillwell Orthogneiss) is thought to represent the margin of an Archaean craton expos...

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Bibliographic Details
Other Authors: CARSON, CHRISTOPHER (hasPrincipalInvestigator), HALPIN, JACQUELINE (hasPrincipalInvestigator), WOODS, MURRAY (processor), Australian Antarctic Data Centre (publisher)
Format: Dataset
Language:unknown
Published: Australian Antarctic Data Centre
Subjects:
geoscientificInformation
METAMORPHIC ROCKS
EARTH SCIENCE
SOLID EARTH
ROCKS/MINERALS/CRYSTALS
METAMORPHIC ROCK FORMATION
GEOGRAPHIC REGION &gt
POLAR
CONTINENT &gt
ANTARCTICA
Scoresby
Stefansson
Stillwell Hills
Dovers
Point Noble
Antarc*
Antarctica
Enderby Land
Online Access:https://researchdata.ands.org.au/geology-stillwell-hills-gis-dataset/945964
https://data.aad.gov.au/metadata/records/stillwell_geology_gis
http://nla.gov.au/nla.party-617536
Description
Summary:The Stillwell Hills region comprises granulite-facies gneisses which record evidence for multiple episodes of deformation and metamorphism spanning more than 2500 million years. The predominant orthogneiss package (Stillwell Orthogneiss) is thought to represent the margin of an Archaean craton exposed in Enderby Land, some 150 km to the west that was reworked during the late Proterozoic. Younger additions to the crust include Palaeoproterozoic charnockitic gneiss (Scoresby Charnockite) and Meso-Neoproterozoic mafic sills and dykes (Point Noble Gneiss, Kemp Dykes) and felsic pegmatites (Cosgrove Pegmatites). Subordinate supracrustal rocks, including metaquartzite, metapelitic, metapsammitic and calc-silicate gneiss (Dovers Paragneiss, Sperring Paragneiss, Stefansson Paragneiss, Keel Paragneiss, Ives Paragneiss) are intercalated and infolded with the Archaean-Palaeoproterozoic orthogneisses. This Dataset is derived from the map product 'The Geology of the Stillwell Hills, Antarctica'. This metadata record was created using information in Geoscience Australia's metadata record at http://www.ga.gov.au/metadata-gateway/metadata/record/78535/

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