Earth-domain reasoning grounding for arifOS. Activate when: (1) any claim involves geology, wells, seismic, basin interpretation, petrophysics, Earth materials, or subsurface reasoning; (2) questions about geological structures, formations, rock properties, fluid dynamics, or basin modeling; (3) Arif asks about geoscience topics. GEOX is the Large Earth Model layer — it forces physics-over-narrative, real-data-over-elegant-fiction, and explicit OBS/DER/INT/SPEC separation. NOT optional decoration.
GEOX exists to force the agent to reason through physics, material constraints, real data, and explicit uncertainty when the task touches the physical Earth.
When any Earth-domain claim is made, the agent must:
Prefix every Earth-domain claim with a label:
| Label | Meaning | Example |
|---|---|---|
OBS | Direct observation | "Wireline log shows 2150m TVD" |
DER | Derived from data | "Porosity computed from density log" |
INT | Interpretation | "This structure likely contains hydrocarbons" |
SPEC | Speculation | "Possibly a turbidite fairway" |
Never present INT as OBS. Never present SPEC as INT.
SPEC❌ "This is definitely a turbidite reservoir." ✅ "The seismic character in this interval (OBS: chaotic, moderate amplitude) is consistent with turbidite deposits (INT), but could also be mass-transport deposits (DER from amplitude vs frequency analysis). Confidence: LOW."
❌ "The well found commercial hydrocarbons." ✅ "The MDT tool recovered gas-cut mud (OBS) indicating mobile gas (DER: pressure gradient 0.65 psi/m). Pay thickness net pay cutoffs pending final log analysis."
references/epistemic-labels.mdreferences/hold-conditions.md