ABSTRACT Integrated grain size and facies analysis provides critical insights into depositional environments and sediment transport mechanisms in sedimentary strata. This investigation employs granulometric data and lithofacies examination from the Bundi region of Rajasthan to reconstruct the palaeoenvironmental conditions of the Bhander Sandstones. Granulometric analysis reveals moderately sorted, medium to fine-grained sediments with fine-skewed, predominantly leptokurtic distributions, indicating deposition under moderate to high-energy regimes characteristic of beach and fluvial environments. Lithofacies analysis serves as a fundamental tool for environmental interpretation, identifying two principal depositional associations in the study area: (1) storm and wave-influenced deposits comprising massive sandstone (Sm), horizontally laminated sandstone (Sh), matrix-supported conglomerate (Cm) and sandstone dominated heterolithic sequence (Sla) facies, indicative of shallow shelf and nearshore environments; and (2) tide-modified deposits including subtidal lagoonal mudflat (Lm), planar and trough cross-bedded sandstone (Sp-St), and rippled sandstone (Sr) facies, representing wave-dominated foreshore to upper shoreface environments. This integrated approach effectively demonstrates the interplay between depositional processes and environmental conditions in the Bhander Sandstones succession.
Ayaz et al. (Sun,) studied this question.