PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

OBJECT                = TEXT
  PUBLICATION_DATE    = 2009-11-15
  NOTE                = "Sample description"
END_OBJECT            = TEXT
END


High-level Description: Sequence of coarse- to fine-grained layers, in the
northeast wall of Fort Rock Tuff Ring. Each coarse- to fine-grained sequence
at this level averages 10 cm thick. 

Texture
  Grain morphology and appearance: Rough, sub-angular, grain-supported tephra
with a few larger, sub-angular lithics intermixed.
  Grain size and sorting:  Smaller tephra grains (<=0.67 mm diameter) supports
lithics 0.2 -1.4 mm in diameter.
  Grain fabric:  Random orientation; unimodal.

Sediment structure:  None

Color:  Dark red, dark grey, black and white grains.