42 samples from the Lower Ordovician Nambeet Formation in Barnicarndy 1 well were analyzed for organic-walled microfossils. The reconnaissance study by Geoscience Australia's Exploring for the Future program assessed yield and preservation for regional correlation. Digital images accompany the record and include examples of acritarchs, algae, cryptospores, and other microfossils.
Use Cases
- Correlating Ordovician rock units based on identified acritarch species like Rhopaliophora pilata and Athabascaella playfordii
- Assessing thermal maturity of organic matter based on observed palynomorph color ranges from brown to black
- Studying early land plant evolution based on the presence of cryptospores
- Analyzing microfossil preservation states and yield from oxidised kerogen preparations
Strengths
- Includes digital images of all identified microfossil types mentioned in the description
- Analysis covers a specific depth interval of 1354.80–2435.04 mRT within the cored formation
- Identifies a diverse suite of palynomorphs including acritarchs, algae, cryptospores, graptolites, and chitinozoans
Limitations
- Row count is unknown, which may limit suitability assessment
- Column-level documentation is absent; field semantics must be inferred after download
- Microfossil yield per sample is described as mostly low, and preservation ranges from poor to good
Provenance
- Source
- Geoscience Australia's Exploring for the Future program
- Collection Method
- Palynological reconnaissance study of acid-resistant organic-walled microfossils from 42 core samples
- Time Range
- Lower Ordovician
- Freshness
- Last updated 2026-04-16 15:23:04.015431; freshness should be verified
- Geography
- Barnicarndy 1 stratigraphic well, Barnicarndy Graben, Canning Basin, Western Australia