Petrographic Images of Lower Ordovician Sandstones from Ottawa, Ontario

Natural Resources Canada provides a dataset of optical and scanning electron microscopy images of sandstone samples from the Lower Ordovician Theresa Formation in Ottawa, Ontario. The dataset includes photomicrographs and backscattered electron micrographs from five borehole cores sampled near a specific stratigraphic boundary. Data was last updated on 2026-05 04 19:11:57.779876.

Use Cases

• Train image classification models to identify sandstone textures based on photomicrographs.
• Develop segmentation models for mineral grains using backscattered electron micrographs.
• Correlate microscopic rock features with geophysical wireline log signatures mentioned in the description.
• Conduct comparative petrographic analysis across the five specified borehole cores.

Strengths

• Includes images from two distinct microscopy techniques: transmitted/reflected light and scanning electron microscopy.
• Samples are from five specific borehole cores (BC81-2, BC81-3, BC84-5, LB-1, GSC Russell No.1) intersecting a defined stratigraphic interval.
• Data is provided by the authoritative Geological Survey of Canada's National Collections.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Natural Resources Canada / Geological Survey of Canada’s National Collections

Collection Method

Core samples were made into polished thin sections and examined using transmitted light, reflected light, and scanning electron microscopes.

Time Range

Lower Ordovician period (geological time).

Freshness

Last updated 2026-05-04 19:11:57.779876; freshness should be verified.

Geography

Ottawa, Ontario, Canada.