Fifteen samples from the top section and seven from the bottom section were collected at Table Mountain, with over 50 samples taken from three sites at Mount Feather. This dataset documents a 1994 study by SCIOPS investigating the origin of diatoms in Sirius Group glacial deposits and the conditions for authigenic chabazite formation. Fieldwork included mapping deposits, sampling tillite at various depths, measuring in-situ fabric for glacial flow direction, and collecting snow samples for modern diatom comparison.
Use Cases
- Classify diatom origin models using sample depth, location (Table Mountain vs. Mount Feather), and in-situ fabric measurements.
- Model conditions for authigenic chabazite formation by analyzing mineral presence/absence data correlated with specific sample sites.
- Reconstruct paleo-glacial flow directions from the orientation and size distribution data of pebbles recorded in the in-situ fabric.
- Compare fossil diatom records from tillite samples with modern diatom data extracted from filtered snow residue samples.
Strengths
- Sample collection documented for specific depths and locations, including 15 top-section and 7 bottom-section samples at Table Mountain.
- Multi-site sampling strategy with over 50 samples collected from three distinct sites at Mount Feather.
Limitations
- Sample size is limited, with a total known count of at least 72 rock samples.
- Data is temporally stale, with collection and last update occurring in 1994.
Provenance
- Source
- SCIOPS via NASA EarthData.
- Collection Method
- Field mapping with staff and abney level, hand-operated percussion sampling at depth intervals, in-situ fabric measurement, and snow sample collection/filtration.
- Time Range
- Study conducted circa 1994.
- Freshness
- 1994-11-30
- Geography
- Table Mountain and Mount Feather in the Transantarctic Mountains, Antarctica.