Nonstructure 109, extramural surface

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Features

Pit: slab-lined (Feature 1) Top of page
General description
Slab-lined pit on the extramural surface outside of the roomblock.
Use history
Feature 1 is an extramural slab-lined thermal feature on the west side of the central rooms in the roomblock north of Pithouse 101-103. The feature may be contemporary with Surface Room Structure 110 1.5 m to the east but post-dates Surface Room Structure 116 as it was partially dug into the structures fill.
Associated features
Excavation procedure
The east half of Feature 1 ws excavated in a full cut. Sediment was screened through an 1/8" mesh. Two floatation and two pollen samples were collected from the base of the feature.
Portion excavated
East half.
Horizontal location
Feature 1 is located adjacent to the rooblock north of Pithouse 101-103.
Vertical location
The feature is excavated into the extramural ground surface and fill of Structure 116.
Construction
A pit was excavated into an extramural surface and then the bottom and sides lined with sandstone slabs.
Remodeling/ modification
No
Thermal alteration
Yes. The interrior face of all sandstone is fire-reddened.
Sooting
No
Sealed
Yes. Some of the sandstone slabs were pulled and put into the pit at the end of its use.
Preservation
Good
Degree of preservation
Moderate amounts of root disturbance.
Shape in plan view
Actual:  basin-shaped
Inferred:  basin-shaped
Shape in cross section
Actual:  elliptical
Inferred:  round
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
94
Yes
North-south.
Width
57
No
94
East-west
Height
No
Depth
26
Yes
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Mixed thermal fill and natural refill.
Calcium carbonate, charcoal, ash, and burned adobe.
roots and insects
5YR 3/4 dark reddish brown
silty clay