Lithofacies | Lithologies | Sedimentary Structures | Depositional Environment | Expected Well Log Gamma Values |
1 | Moderately to well sorted sandstone, variably dolomitic | Trough and tabular, herringbone cross stratification, horizontal laminations | Subtidal sand bars | ~100 - 200 (cps) |
2 | Sandstone, siltstone, dolostone | Ripples, mudcracks, bioturbation, flaser bedding | Intertidal sand flats | ~150 - 250 (cps) |
3 | Dolostone, siltstone | Cryptalgalaminations, rip up clasts | Tidal ponds | ~60 - 150 (cps) |
4 | Sucrosic dolostone, arenaceous dolostone | Uncommonly rippled or cross stratified | Subtidal shelf | <~60 (cps) |
5 | Poorly sorted arkosic sandstone, abundant accessory minerals | Dewatering structures, load casts and burrows | “event bed”, rapidly deposited unsorted sediment on the tidal flat | >~250 (cps) |