Infrasointia
Infrasointia is a hypothetical subsurface geological province described in geophysical literature as a zone of persistent low-frequency seismic signals beneath the Arcadia Basin on the Valeron Craton. The concept was proposed to explain anomalies not accounted for by conventional crustal models.
Etymology: The name combines infra- meaning "below" with a neologism referencing sound, reflecting the province’s characteristic
Evidence comes from long-baseline seismic arrays and magnetotelluric surveys, which indicate a large, subcrustal anomaly with
Geography and geology: Envisioned to lie mainly beneath the Arcadia Basin, it is posited to extend several
Geophysical signatures: Models predict low P- and S-wave velocities, elevated electrical conductivity, and distinctive heat-flow patterns
Significance: If validated, Infrasointia would influence interpretations of crustal structure and geothermal potential and prompt new