PDS_VERSION_ID        = PDS3
RECORD_TYPE           = STREAM

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

High-level Description: Unit 5. Fairly poorly-sorted lapilli layer, grading
from fairly coarse lapillus-sized grains at the top of the photo to coarse ash
at the bottom. Largest clasts are ~6 mm, and smaller clasts average ~1 mm but
range from 2-10 mm. Most grains are non-accretionary, with the majority being
vesicular scoria. ~10% of lapilli are ~ 1 mm diameter accretionary. Rounded,
white, smooth grains are also present. Smaller lapilli are in an ash matrix,
while there is very little interstitial material surrounding larger lapilli.
The layer is bisected by a fine-grained palagonitized layer.

Texture
  Grain morphology and appearance: Dark grey, sub-angular, vesiculated scoria
in a clast-supported matrix.  Smooth, sub-rounded white grains comprise 10%,
as does accretionary lapilli.
  Grain size and sorting: Relatively poorly-sorted clasts 2-10 mm diameter.
Accretionary lapilli are 1 mm diameter.
  Grain fabric:  Random orientation.

Sediment structure:  None evident.

Color:  Black to grey with a few white grains.