Pit N Thesis · thesis-4-37
Electrofacies — roof of Seam A1
The thesis panel tests the core pick for Seam A1 against wireline response in three boreholes. Here the diagnostic target is the coal-top boundary: the upward change into a finer, generally higher-gamma roof is more important than the shape of the coal trace in isolation.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
The thesis panel tests the core pick for Seam A1 against wireline response in three boreholes. Here the diagnostic target is the coal-top boundary: the upward change into a finer, generally higher-gamma roof is more important than the shape of the coal trace in isolation. A relatively low gamma trace and boxcar-to-cylindrical geometry support recognition of a low-clastic interval; brief departures from that motif are evaluated against partings seen in core. Because the source density track is expressed in counts per second, numerical comparison with calibrated bulk density would be invalid without the original tool conversion. The motif therefore has correlation value rather than a unique environmental meaning, and remains sensitive to borehole condition, vertical resolution, mineral matter and depth matching. Its internship counterpart is the same source panel and is retained for documentary continuity only.
- Source
- Private thesis source vault · Chapter IV record
- Location in source
- PDF page 138
- Image quality
- Source scan
- Record ID
- thesis-4-37
