Pit N Thesis · thesis-4-22
Core photographs — B1–B2 interburden
Between B1 and B2, the source describes pale grey claystone and siltstone with fine heterolithic layering. This interval is a correlation separator as well as a depositional record, so thickness changes must be distinguished from drilling loss, core breakage and marker-pick uncertainty.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
Between B1 and B2, the source describes pale grey claystone and siltstone with fine heterolithic layering. This interval is a correlation separator as well as a depositional record, so thickness changes must be distinguished from drilling loss, core breakage and marker-pick uncertainty. In the thesis, the core is treated as a vertical succession: contacts, grain-size changes, structures and missing recovery are retained rather than averaged into one lithology name. Correlation gains weight when adjacent boreholes reproduce that ordered facies transition together with the log marker; an isolated look-alike bed is not a chronostratigraphic datum. The matching internship panel documents provenance continuity and is not counted as a second sample.
- Source
- Private thesis source vault · Chapter IV record
- Location in source
- PDF page 112
- Image quality
- Standard
- Record ID
- thesis-4-22
