Isopachs of the interval between the top of the Huerfanito Bentonite Bed and the top of the Pictured Cliffs Sandstone, San Juan Basin (sjbhintg)
This shapefile and coverage depicts the thickness of the
interval between the top of the Huerfanito Bentonite bed in
the Lewis Shale and the top of the Pictured Cliffs
Sandstone.