Complete Environmental Sequence:

• A - Proximal Volcanic (+200m to +150m): Lava flows, pyroclastic deposits, volcanic breccias
• B - Distal Volcanic (+150m to +100m): Ash falls, tuffs, reworked volcanic sediments
• C - Fluvial (+100m to +50m): River deposits, channel sands, flood plain muds
• D - Sabkha (+50m to +20m): Evaporite deposits, mudcracks, algal mats
• E - Swamp (+30m to +10m): Plant remains, coal formation, organic-rich sediments
• F - Peat Bog (+20m to +5m): Organic accumulation, plant debris, acidic conditions
• G - Playa Lake (+15m to 0m): Evaporites, mudcracks, salt crystal casts
• H - Lagoon (+5m to -5m): Restricted circulation, fine sediments, limited fauna
• I - Tidal Flat (+2m to -2m): Bidirectional currents, mudcracks, algal mats
• J - Beach (0m): Wave-reworked sands, shell fragments, barrier islands
• K - Reef (-5m to -50m): Framework carbonates, bioherms, reef debris
• L - Deltaic (-2m to -30m): Distributary channels, mouth bars, prodelta muds
• M - Carbonate Platform (-20m to -100m): Oolites, bioclasts, carbonate muds
• N - Transitional Marine (-30m to -150m): Mixed sediments, variable energy conditions
• O - Mixed Carbonate-Clastic Shelf (-50m to -200m): Interbedded carbonates and clastics
• P - Shallow Marine (-100m to -200m): Mixed deposits, storm beds, bioturbation
• Q - Deep Basin (-200m to -1000m): Evaporites, anoxic conditions, limited fossils
• R - Deep Marine (-200m to >-2000m): Hemipelagic muds, turbidites, pelagic ooze