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 12; coarse (0.5 mm) to fine (fine ash) laminated
sequence.   The bottom of this fining-upward sequence (3725) is a coarse,
poorly-sorted accretionary lapilli and ash layer. Clast sizes range from 0.1-3
mm, with most large grains (those greater than 2 mm) toward the bottom. ~60%
of clasts are 1 mm or larger, with the rest being an even distribution of
progressively smaller clasts. Ash fragments are glassy, dark grey to brown,
and sub-angular.
  The top of this fining-upward sequence (3726-3727) is characterized by
well-sorted ash, between 0.08-0.5 mm. There are a few, larger clasts (0.5 mm-1
mm), which comprise about ~2-5% of the material. Ash fragments are black to
dark brown, glassy and sub-angular to angular.

Texture
  Grain morphology and appearance: Dark grey granular-textured sub-angular
clastics in a brown-grey, glassy ash.
  Grain size and sorting: Well-sorted, fining-upward ash 0.08-0.5 mm in size
supporting 0.5-1 mm diameter clasts.
  Grain fabric:  Random orientation.

Sediment structure:  Parallel lamination; graded bedding.

Color:  Grey to brown with a few light tan/white grains.