|
| Lithofacies | Code | Description | Petrography | Interpretation | Occurrence |
|
| Conglomerate | | | | | |
| Clast-supported | Gcm | Massive; granule- to pebble-sized clasts; oligomictic (chert) | Orthoconglomerate | Bedload transport lag deposits in tidal channels | Top Quartzite |
| Matrix-supported | Gms | Massive or crudely bedded; granule- to pebble-sized; oligomictic (chert) | Paraconglomerate | Bedload transport lag deposits in tidal channels | Top Quartzite |
| Trough cross-bedded | Gt | Granule- to pebble-sized; clasts bed thickness generally 1 to 2 m. | Paraconglomerate | Bedload transport tidal channel deposits | Top Quartzite |
|
| Sandstone | | | | | |
| Trough cross-bedded | St | Medium sand solitary or grouped; set thickness generally 2–30 cm | Quartzarenite, sometimes litharenite | 3D dunes and interference ripples movement; tidal channels | Top Quartzite
Padeha and Deranjal |
| Planar cross-bedded | Sp | Coarse-fine sand; solitary or grouped; set thickness generally 5–50 cm; herringbone cross-bedding | Quartzarenite, sometimes litharenite | Transverse and linguoid bedforms (ripple or 2D dunes); grouped tabular sets with bipolar-bimodal paleocurrents representing tidal channels | Top Quartzite
Padeha Fm |
Horizontally bedded
or laminated | Sh | Fine sand; set thickness generally 5–100 cm; sometimes with trace fossils | Quartzarenite | Planar bed lower and upper flow in tidal flat | Top Quartzite
Padeha and Deranjal |
Low-angle (<10)
cross-bedded | Sl | Medium to fine sand; small wedge-shaped sets | Quartzarenite | Oscillation of wave swash and backswash in intertidal | Top Quartzite
Padeha Fm |
| Rippled | Sr | Medium to fine sand wave and interference ripples set thickness generally 2–80 cm | Quartzarenite, sometimes litharenite | Deposition from traction current ripples with low indices (5–7) related to wave-induced currents in tidal flat | Top Quartzite
Padeha and Deranjal |
| Massive | Sm | Medium sand and massive to crudely bedded | Quartzarenite | Gravity and turbulence currents | Top Quartzite |
| Scour pits | Se | Coarse-fine sand; base of Sp and Sh lithofacies; set thickness 1–10 cm | Muddy pebble quartzarenite | Scour fills in base of tidal channels | Top Quartzite
Padeha Fm |
|
| Interbedded sandstones-mudstone | | | | | |
| Flaser bedded | Sr(Fl) | Lenticular mud interbeds sand | Quartzarenite-siltstone |
Alternating strong and weak flows in intertidal | Top Quartzite
Padeha Fm |
| Wavy bedded | Sr/Fl | Rippled sand interbeds mud | Quartzarenite-siltstone |
Alternating strong and weak flows in upper intertidal | Top Quartzite
Padeha Fm |
| Lenticular bedded | Fl(Sr) | Rippled sand lenses in mud | Quartzarenite-siltstone |
Alternating strong and weak flows in upper intertidal-supratidal | Top Quartzite
Padeha Fm |
|
| Mudstone | | | | | |
| Laminated or rippled | Fl | Often silt size 1-2 cm layers; sometimes with ripple and mud cracks | Siltstone; claystone | Deposition from traction current in upper intertidal and supratidal | Top Quartzite
Padeha Fm |
| Laminated marl | Flc | Silt and clay size with carbonates planar laminate and cross-laminated | Silty lime mudstone | Low-energy environments (subtidal lagoon) | Deranjal Fm |
|
| Carbonate | | | | | |
| Massive | Dim | Carbonate intraclasts; pebble-sized; intraformational | Dolomitic intraclastic grainstone | Debris flow and turbulence currents in tidal channels | Deranjal Fm |
| Planar cross-bedded | Dp | Sand-sized grains; herringbone cross-bedding | Dolomitic ooid grainstone to packstone | Tidal channel deposits in intertidal and subtidal | Deranjal Fm |
| Rippled | Dr | Wavy and climbing ripples; set thickness 0.1–0.8 m | Dolomitic ooid grainstone to packstone | Tidal channel deposits in intertidal and subtidal | Deranjal Fm |
| Laminated | Dl | Set thickness 0.1–2 m; sometimes with sand and mud | Dolomudstone; sandy dolomudstone | Deposited in tidal setting (often upper intertidal to supratidal) | Deranjal Fm
Padeha Fm |
| Stromatolitic | Ds | Set thickness 0.5–3 m; sometimes with sand lenses | Dolomitic boundstone; dolomudstone | Deposited in tidal setting (often intertidal) | Deranjal Fm
Padeha Fm |
| Flaser-wavy bedded | Dr/Dl | Lenticular calcilutite interbeds calcarenite; flaser and wavy bedded | Dolomitic grainstone; dolomudstone |
Alternating strong and weak flows in intertidal setting | Deranjal Fm |
|
| Interbedded sandstones-dolomudstone | | | | | |
| Flaser-wavy bedded | Sr/Dl | Rippled sand interbeds laminated dolomudstone | Quartzarenite-dolomudstone |
Alternating strong and weak flows in upper intertidal to supratidal | Padeha Fm |
|
| Evaporate | | | | | |
| Laminated | El | Set thickness 0.2–1.5 m; enterolithic folding | Gypsum, sometimes anhydrite | Subaerial precipitation in sabkha or supratidal | Padeha Fm |
| Laminated or rippled | Efl | Evaporate interbeds mud; sometimes mud crocks, salt casts | Gysiferous mudstone | Subaerial-subaqueous precipitation in sabkha or supratidal | Padeha Fm |
| Massive | Efm | Evaporate patch in mud sometimes mud; cracks and rain spots | Gypsum-siltstone | Subaerial-subaqueous precipitation in sabkha or supratidal | Padeha Fm |
Laminated and
rippled | Edl | Evaporate interbeds dolomite | Gypsum-dolomudstone | Subaerial-subaqueous precipitation in sabkha or supratidal | Padeha Fm |
|
