Metadata and abstracts from the ASAC Project 105, detailing geological studies in East Antarctica. The record includes petrological analyses of calc-silicate granulites and high-grade gneisses, describing mineral assemblages and inferred pressure-temperature paths. It was published by the Australian Antarctic Data Centre and last updated in March 1995.
Use Cases
- Reconstruct retrograde P-T paths using described mineral reaction sequences like wollastonite + scapolite + calcite = garnet + CO2.
- Correlate regional metamorphic events by analyzing thermobarometry data from garnet-orthopyroxene-plagioclase-quartz gneiss.
- Study fluid-rock interaction during metamorphism by examining reported variations in CO2 and H2O activities.
- Interpret deformational history from described structural features such as boudinaged mafic dykes and upright fabric zones.
Strengths
- Contains detailed petrological descriptions of mineral assemblages and reaction textures.
- Provides specific pressure-temperature estimates, such as 760°C at 6 kbar, for metamorphic conditions.
Limitations
- The dataset is a metadata record with no directly accessible raw data files or sample data.
- Information is temporally stale, with the last update occurring in 1995.
Provenance
- Source
- Australian Antarctic Data Centre (AU_AADC) for ASAC Project 105.
- Collection Method
- Compiled from scientific paper abstracts and project metadata.
- Time Range
- null
- Freshness
- null
- Geography
- East Antarctica, specifically the Larsemann Hills, Bolingen Islands (Prydz Bay), and northern Prince Charles Mountains.