A simple field practice that can save hours of re-examination later
- Aug 4
- 1 min read
Before logging a metre of core, take a clear photograph while it is wet. Then photograph it again after it has dried.
Why both?
Wet core can make textures, geological contacts, subtle colour variations and some mineral features easier to recognise.
Dry core can make alteration patterns and certain mineral assemblages easier to assess.
Both records together create a visual reference you can return to weeks or months later.
Remote review becomes easier — another geologist can see the core as it appeared in the field, rather than relying only on written notes.
Better visual documentation can support more consistent and defensible core logging.
It may take only a few extra minutes per tray, but that small habit can save significant time when you need to revisit observations later.
Good core logging is not only about what you record in the field. It is also about preserving what you saw.
Photograph it wet. Photograph it dry. Keep both records.
What is one field practice you wish someone had taught you earlier in your career?
