©SITED STATES GEOLOGICAL SURVEY 
THE GRAND CANON DISTRICT. ALLAS SHEET V. 
In the upper View the great, lava streams are seen descending from the Plateau wrapping' around 
the fine gable of Carboniferous strata and reaching to the brink o,f the inner gorge where thpv 
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plunge into the bottom of the chasm . 
The. two Views are continuous . On the left are seen the cascades of lava descending from the Craters 
upon the heights of the Umkaret with intervening pediments of upper Carboniferous strata . The efferi 
of the fault is shown by (he greater height of the eastern wall in the lower view 
