Geological Mapping · mapping-4-12
LP22 sandstone thin section
The LP22 thin section can test the mineralogical and textural basis of the sandstone classification, but only if the sample code, field station and image labels are internally consistent.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
The LP22 thin section can test the mineralogical and textural basis of the sandstone classification, but only if the sample code, field station and image labels are internally consistent. Interpretation should state PPL/XPL condition, scale or calibrated field of view, point-count method and modal total, then distinguish framework grains from matrix, cement and alteration. Grain contact, compaction, carbonate replacement and fracture fill are more informative for diagenesis than a qualitative mineral list alone. Because the plate appears to support a Halang sandstone assignment, the key synthesis is whether petrographic maturity and matrix content agree with the outcrop-scale turbiditic interpretation; any mismatch should prompt a provenance or sampling review rather than forced agreement.
- Source
- Private mapping source vault · geological evidence record
- Location in source
- PDF page 66
- Image quality
- Standard
- Record ID
- mapping-4-12
