VOLCANIC ASH BED LOCALITY--Lava Creek B (Pearlette O) volcanic ash bed
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Sand Draw area, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Gudmundsen Ranch test hole 12-5H-88, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Clark Mills damsite section, Nebr.; contains Huckleberry Ridge (Pearlette B) (?) volcanic ash bed
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Hartford section, S. Dak.; contains Lava Creek B (Pearlette O) volcanic ash bed
VOLCANIC ASH BED LOCALITY--Huckleberry Ridge (Pearlette B) volcanic ash bed
VOLCANIC ASH BED LOCALITY--Mesa Falls (Pearlette S) volcanic ash bed
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Winslow Hill section, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Fontanelle site, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Fremont Bluffs section, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Coopers Canyon section, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Bignell Hill section, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Johnson Lake roadcut section, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Buzzards Roost section, Nebr.
VOLCANIC ASH BED LOCALITY--Bishop volcanic ash bed
VOLCANIC ASH BED LOCALITY--Pearlette family volcanic ash bed--Not individually identified
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Elk Creek Till section, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Naponee site, Nebr.
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Sappa Formation site, Nebr.; contains Mesa Falls (Pearlette S) volcanic ash bed
LOCATION OF SIGNIFICANT STRATIGRAPHIC SECTION--Natick section, Nebr.
DEFLATION BASIN
DIRECTION OF ICE MOVEMENT INDICATED BY STRIATIONS; SUCCESSIVE MOVEMENTS BY CROSSED STRIATIONS