Pit N Thesis · thesis-4-18
Core photographs — C–D interburden
The C–D interburden is represented by very fine- to fine-grained sandstone and siltstone, locally coarser, with flaser, wavy and lenticular bedding. Those heterolithic structures record alternation between traction and suspension fallout, but they do not, on their own, distinguish tidal modulation from other fluctuating-current processes.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
The C–D interburden is represented by very fine- to fine-grained sandstone and siltstone, locally coarser, with flaser, wavy and lenticular bedding. Those heterolithic structures record alternation between traction and suspension fallout, but they do not, on their own, distinguish tidal modulation from other fluctuating-current processes. 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 103
- Image quality
- Source scan
- Record ID
- thesis-4-18
