Geological Mapping · mapping-4-25
Conceptual submarine-fan model
The submarine-fan diagram is a conceptual analogue used to organise observations, not field evidence from Karangkancana.
SOURCE-LED TECHNICAL READING
Geological interpretation and evidential boundary
The submarine-fan diagram is a conceptual analogue used to organise observations, not field evidence from Karangkancana. Its legitimate role is predictive: a channel interpretation should anticipate erosive confinement and amalgamation; lobe deposits should show tabular beds and compensation; overbank deposits should become thinner and muddier away from conduits. Local sections can then be tested against those predictions. The model should not be used circularly—assigning a facies from the diagram and then citing that assignment as proof of the model. Because the Halang Formation has published evidence for a longitudinal turbidite system with channels, overbank, sheet sandstone and basin plain, the regional analogue is relevant, but local architecture and palaeocurrent data must decide which elements are actually present.
- Source
- Private mapping source vault · geological evidence record
- Location in source
- PDF page 73
- Image quality
- Source scan
- Record ID
- mapping-4-25
