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The GeoMAP dataset of Antarctic rock exposures

Citation

Cox, S and Ballinger, M and Halpin, J and SCAR GeoMAP Action Group, A, The GeoMAP dataset of Antarctic rock exposures, TACtical Workshop Abstracts, 21-23 March 2018, Hobart, Tasmania (2018) [Conference Extract]


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Abstract

The SCAR GeoMap action group has been building a detailed digital geological dataset of Antarctica. We have been capturing existing geological map data, refining its spatial reliability, improving representation of glacial sequences and geomorphology. The initiative is aimed towards continent-wide perspectives and for cross-discipline use, our international team is collaboratively classifying and describing around 72,000 distinct areas that cover 51,000 km2. The dataset will describe ‘known geology’ of rock exposures rather than ‘interpreted’ sub-ice features. Glacial deposits are an important focus for their potential to contain records of ice fluctuations of relevance to climate change. Here we present background on: (1) Degree of completion toward the first version of a continent-wide dataset. All rock outcrops will have geological attributes assigned to them in GeoSciML suitable for use at 1:250,000 (or more-regional) scale. (2) The large number of hard-copy geological maps and data sources, which range in scale and quality. (3) Development of local legends, which highlight geological variation across the region. (4) Progress towards a unified classification scheme. (5) Bibliographic links referencing authors of key original work. (6) Potential for the dataset to provide fresh perspectives, for example, through combined geological legends and interrogation of continent-wide time-space plots. It is our expectation that the dataset will be ideal to constrain and develop models of heat flow in the Antarctic continent.

Item Details

Item Type:Conference Extract
Keywords:GeoMap, Antarctica, geology, map
Research Division:Earth Sciences
Research Group:Geology
Research Field:Igneous and Metamorphic Petrology
Objective Division:Environment
Objective Group:Land and Water Management
Objective Field:Antarctic and Sub-Antarctic Land and Water Management
UTAS Author:Ballinger, M (Miss Matilda Ballinger)
UTAS Author:Halpin, J (Dr Jacqueline Halpin)
ID Code:131195
Year Published:2018
Deposited By:Oceans and Cryosphere
Deposited On:2019-03-06
Last Modified:2019-03-06
Downloads:0

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