Pit N Thesis · thesis-4-23
Core photographs — Seam A2
Seam A2 is represented in three boreholes as an approximately 12–15 m banded-coal interval. The source records clay bands or partings about 2–15 cm thick, so the apparent seam envelope is not equivalent to uninterrupted clean coal.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
Seam A2 is represented in three boreholes as an approximately 12–15 m banded-coal interval. The source records clay bands or partings about 2–15 cm thick, so the apparent seam envelope is not equivalent to uninterrupted clean coal. In the thesis evidence chain, the photograph records recovered material and superposition but does not directly demonstrate between-well continuity. Core-scale banding and partings may be described visually; coal rank, peat affinity and quality cannot be inferred without the laboratory dataset. Correlation through three boreholes is strongest where the photographed contacts coincide with the same gamma and density markers in depth; recovery loss, fragmentation and depth mismatch must be ruled out before a thickness difference is treated as geological. Where this panel also occurs in the internship report, the duplication is treated as traceable reuse rather than replication.
- Source
- Private thesis source vault · Chapter IV record
- Location in source
- PDF page 115
- Image quality
- Source scan
- Record ID
- thesis-4-23
