Field examination and sampling of igneous dykes across multiple localities in Antarctica's Dry Valleys area, including Lake Vanda, Shapeless Mountain, and Mt Fleming. The study established intrusion sequences and collected samples for petrological analysis. Data was provided by SCIOPS and last updated in 1974.
Use Cases
- Classify dyke types (lamprophyre vs. porphyry) based on field observations and location data.
- Analyze the spatial distribution of dyke swarms using locality names like Lake Vanda and Nussbaum Riegel.
- Model the temporal sequence of intrusion events from documented field relationships.
- Correlate petrological analysis results with dyke characteristics such as phenocryst size (e.g., 2-3cm feldspar).
- Map dyke attitudes and density variations across the surveyed Dry Valleys localities.
Strengths
- Covers multiple distinct localities including Lake Vanda, Mt Odin, and Meserve Glacier.
- Documents specific geological features like phenocryst size (2-3cm) and intrusion sequence.
Limitations
- Dataset is from 1974, representing historical field observations.
- Unknown sample size (row count) and specific analytical results.
- Geographic scope is limited to the specific Dry Valleys area studied.
Provenance
- Source
- SCIOPS via NASA Earthdata
- Collection Method
- Field examination and physical sampling of rock formations.
- Time Range
- null
- Freshness
- 1974-01-23
- Geography
- Dry Valleys area, Antarctica (Lake Vanda, Shapeless Mountain, Mt Fleming, Mt Odin, Mt Boreas, Mt Aeolus, Heimdall Glacier head, Lake Vida, Mt Insel, Mt Orestes, Meserve Glacier, Nussbaum Riegel)