Strong Layer in SE Coprates

There is a particularly strong layer 
~10 m thick and extending over at 
least 8,000 km   in area.

                               Layer outcrops in the massif indicate
                               that the massif is tilted down towards
                               the west (& maybe towards the south).

Layer does not occur in southernmost wall.
Current elevation is lower than massif & northern plateau
Perhaps topo was inverted when strong layer was emplaced
Perhaps strong layer was downdropped to a lower elevation, now difficult to find exposures
Maybe trough south of massif opened first, southern plateau downdropped, then layer emplaced

2

M07/03302

M03/06302