Multivariate interrelatedness of geotechnical and petrophysical properties towards developing near-surface lithology clusters in a sedimentary terrain

Abstract The study reports the approach of interrelating geotechnical and petrophysical parameters to develop near-surface lithology clusters in a sedimentary terrain. Field-based laboratory-based geophysical, geotechnical, measurements were carried out with view finding correlations among related parameters, grouping into depth clusters, determining trend between field-acquired laboratory-obtained parameters. Four agglomerate hierarchical cluster signatures identified at 0–30 cm, three 30–60 five 0–90 cm. Principal component 1 retained 74% data variation differentiated according Poisson’s ratio (v) velocity ( V p /V s ). 2 explained another 14% variability original responses separated based on elastic modulus (E) clay fraction (C). Degree correlation porosity (Φ), sand (S), C, unconfined compressive strength (U), California bearing (R) followed order Φ > S U R. Trend shear m showed good agreement R = 0.992) field laboratory an amplification factor 4.13 separating corresponding values. Lithology determined from soil analysis agreed that inferred measured electrical resistivity while petrophysical, geophysical spatial supported site configuration patterns. Thus, multivariate association exhibited potentials for rapid exploratory mapping even regional scale.