Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by general context]
6. sections (general, part)

Anotations

Scope note:

Refers to very thin sections of a petrographic sample ground down to a flat surface and prepared for examination by a microscrope or microprobe. A thin section is 30 microns or less in thickness as a rule.