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A dip symbol with a hooked tick, marking inverted strata.
Also known as: Inverted bedding symbol, Overturned strata symbol
On a geological map overturned bedding is drawn as a dip symbol whose tick curls back, marking strata rotated past vertical so the older rock now lies above the younger.
Marks bedding rotated past vertical, so that the stratigraphic sequence is inverted at that point.
Contexts: Maps
Records that the normal rule of older-below-younger fails locally, which changes how the whole surrounding structure must be read.
Contexts: Maps
A strike line with a tick that curves back on itself, hooking towards the strike line rather than running straight from it.