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Legend (Inventory_Geology/Digital_Bedrock_Geologic_Map_of_the_Stockton_Quadrangle_Tennessee)

STOC - Geologic Cross Section Lines (0)
geologic cross section line geologic cross section line
STOC - Geologic Attitude Observation Localities (1)
horizontal beds horizontal beds
STOC - Mine Point Features (2)
well, dry and abandoned well, dry and abandoned
oil well oil well
oil and gas well oil and gas well
gas well gas well
drill hole, diamond drill hole, diamond
shut-in gas well shut-in gas well
STOC - Mine Area Feature Boundaries (3)
known or certain known or certain
STOC - Mine Area Features (4)
strip mine strip mine
STOC - Geologic Contacts (5)
approximate approximate
quadrangle boundary quadrangle boundary
water or shoreline, approximate water or shoreline, approximate
STOC - Geologic Units (6)
water- water water- water
PNcr - Crossville Sandstone (Lower Pennsylvanian) PNcr - Crossville Sandstone (Lower Pennsylvanian)
PNcrd - Crossville Sandstone and Dorton Shale, undivided (Lower Pennsylvanian) PNcrd - Crossville Sandstone and Dorton Shale, undivided (Lower Pennsylvanian)
PNd - Dorton Shale (Lower Pennsylvanian) PNd - Dorton Shale (Lower Pennsylvanian)
PNrc - Rockcastle Sandstone (Lower Pennsylvanian) PNrc - Rockcastle Sandstone (Lower Pennsylvanian)
PNfac - Fentress Formation (Lower Pennsylvanian (?)) PNfac - Fentress Formation (Lower Pennsylvanian (?))
Mp - Pennington Formation (Upper Mississippian) Mp - Pennington Formation (Upper Mississippian)