Structure 503, masonry surface structure

Features


Metate bin (Feature 1) Top of page
General description
Metate bin.
Use history
Used for grinding. A corrugated gray jar fragment at the downslope end of the metate may have been used to catch whatever was being ground.
Associated features
Adjacent bins to the east and south (Features 2 and 3).
Excavation procedure
Recorded in provenience data, which are available through the "Field Data: Provenience Data" query in the multisite research database.
Portion excavated
All.
Horizontal location
Northwest quarter of room.
Vertical location
Floor (Surface 1).
Construction
The sides of the bin are constructed of vertical sandstone slabs (the southeast side of this bin is the northwest side of Feature 2; the southwest side is the northeast side of Feature 3). The base is formed by a slab metate tilted down to the south (23 d
Remodeling/ modification
Not Recorded
Thermal alteration
Not Recorded
Sooting
Not Recorded
Sealed
No
Preservation
Good.
Degree of preservation
Southwest slab partly collapsed.
Shape in plan view
Actual:  irregular.
Inferred: 
Shape in cross section
Actual:  rectangular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
73
Yes
Width
70
Yes
Height
No
Not applicable.
Depth
34
Yes
From cross section (field map 55). At the cross section line, the bin stands 22 cm above the floor of the room, and extends 12 cm below.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Postabandonment, erosional fill and roof fall.
Not recorded.
Not recorded.
Red brown.
Silt loam.

Metate bin (Feature 2) Top of page
General description
Metate bin.
Use history
Used for grinding.
Associated features
Bins to west and southwest (Features 1 and 3).
Excavation procedure
Recorded in provenience data, which are available through the "Field Data: Provenience Data" query in the multisite research database.
Portion excavated
All.
Horizontal location
Northeast quarter of room.
Vertical location
Floor (Surface 1).
Construction
The northwest side of this bin is the southeast east side of Feature 1. Three of the four sides are constructed of vertical sandstone slabs; the fourth side (southeast) is formed by a boulder face. The base of the bin is formed by a slab metate tilted dow
Remodeling/ modification
Not Recorded
Thermal alteration
Not Recorded
Sooting
Not Recorded
Sealed
No
Preservation
Excellent.
Degree of preservation
Shape in plan view
Actual:  irregular.
Inferred: 
Shape in cross section
Actual:  rectangular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
75
Yes
Width
64
Yes
Height
No
Not applicable.
Depth
28
Yes
From cross section (field map 54). At the cross section line, the bin stands 17 cm above the floor of the room, and extends 11 cm below.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Postabandonment, roof fall and wall fall.
Not recorded.
Not recorded.
Red brown.
Silt loam.

Metate bin (Feature 3) Top of page
General description
Metate bin.
Use history
Used for grinding. Inferred to have no longer been in use by or at abandonment (original metate removed).
Associated features
Bins to north and northeast (Features 1 and 2).
Excavation procedure
Recorded in provenience data, which are available through the "Field Data: Provenience Data" query in the multisite research database.
Portion excavated
All.
Horizontal location
Along central portion of west wall of room.
Vertical location
Floor (Surface 1).
Construction
The sides of the bin are constructed of vertical sandstone slabs (the northeast side of this bin is the southwest side of Feature 1). The base is formed by horizontal sandstone slabs (some ground), tilted down to the north (19 degrees), except in the sout
Remodeling/ modification
Yes. The original metate is believed to have been removed from this feature. A metate found in contact with the ash was neither built-in nor found in use position.
Thermal alteration
No
Sooting
No
Sealed
No
Preservation
Good.
Degree of preservation
Northeast slab partly collapsed, and the metate was removed prehistorically.
Shape in plan view
Actual:  irregular.
Inferred: 
Shape in cross section
Actual:  rectangular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
80
Yes
Width
61
Yes
Height
No
Not applicable.
Depth
29
Yes
This measurement assumes that the northeast slab once stood perpendicular to the base of the bin; from cross section (field map 55). At the cross section line, the bin stands 10 cm above the floor of the room, and extends 19 cm below.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Postabandonment, erosional fill and roof fall.
Not recorded.
Not recorded.
Red brown.
Not recorded.

Metate bin (Feature 4) Top of page
General description
Metate bin.
Use history
Used for grinding. No longer in use by or at abandonment (metate removed).
Associated features
None.
Excavation procedure
Recorded in provenience data, which are available through the "Field Data: Provenience Data" query in the multisite research database.
Portion excavated
All.
Horizontal location
South corner of room.
Vertical location
Floor (Surface 1).
Construction
The northwest side of the bin is a vertical sandstone slab; the southwest and southeast sides are formed by the coursed masonry walls of Structure 503; and the northeast side is partly missing, but two small, vertical sandstone slabs remain. The base of t
Remodeling/ modification
Yes. Presumably, the metate was removed. A metate (PL 5) recovered from the room floor slightly overlapping Feature 3 could be the metate that was removed from the bin.
Thermal alteration
Not Recorded
Sooting
Not Recorded
Sealed
No
Preservation
Good.
Degree of preservation
Metate and portion of northeast wall are missing.
Shape in plan view
Actual:  irregular.
Inferred: 
Shape in cross section
Actual:  rectangular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
78
Yes
Width
60
Yes
Height
No
Not applicable.
Depth
33
Yes
From cross section (field map 56). At the cross section line, the bin stands 28 cm above the floor of the room, and extends 5 cm below.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Postabandonment, erosional fill and roof fall.
Charcoal, clay, artifacts.
Not recorded.
Red brown.
Clay loam.

Doorway (Feature 5) Top of page
General description
Floor-level doorway.
Use history
Provided access between Structure 503 and the courtyard (Nonstructure 513).
Associated features
Same doorway as Nonstructure 513 (courtyard), Feature 3.
Excavation procedure
Recorded in provenience data, which are available through the "Field Data: Provenience Data" query in the multisite research database.
Portion excavated
All.
Horizontal location
East wall of room, just south of center.
Vertical location
Floor (Surface 1).
Construction
The wall that defines the north side of the doorway is constructed of semicoursed, double-stone masonry on a boulder base; the cornerstones are pecked. The "wall" that defines the south side of the doorway is formed by the face of another boulder. The lin
Remodeling/ modification
Not Recorded
Thermal alteration
Not Recorded
Sooting
Not Recorded
Sealed
No
Preservation
Good.
Degree of preservation
Lintel broken and slightly collapsed.
Shape in plan view
Actual:  unknown.
Inferred: 
Shape in cross section
Actual:  irregular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
No
Not applicable.
Width
No
See Database Map 4101.
Height
75
Yes
Depth
No
See Database Map 4101.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Natural fill and structure collapse: roof fall and wall fall (postabandonment).
Not recorded.
Not recorded.
Not recorded.
Not recorded.

Doorway (Feature 6) Top of page
General description
Raised-sill doorway.
Use history
Originally provided access between Structures 503 and 504 (possibly as a pass-through or "window"). Later, it was deliberately plugged.
Associated features
Same doorway as Structure 504, Feature 2.
Excavation procedure
Exposed, not excavated.
Portion excavated
All exposed, none excavated.
Horizontal location
Southwest wall of room, in approximately the center of the wall.
Vertical location
78 cm above floor (Surface 1).
Construction
The sides of the doorway are coursed, double-stone masonry with pecked cornerstones. The sill is a sandstone slab.
Remodeling/ modification
Yes. Plugged with lightly shaped, semicoursed masonry.
Thermal alteration
Not Recorded
Sooting
Not Recorded
Sealed
Yes. Masonry plugged.
Preservation
Poor.
Degree of preservation
Upper portion missing (collapsed).
Shape in plan view
Actual:  unknown.
Inferred: 
Shape in cross section
Actual:  rectangular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
No
Not applicable.
Width
No
See Database Map 4101.
Height
50
No
Depth
No
See Database Map 4101.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
Sandstone masonry used to intentionally plug doorway.
Not applicable.
Not recorded.
Not applicable.
Not applicable.

Bedrock feature (Feature 7) Top of page
General description
Three small, pecked depressions on bedrock boulder surface.
Use history
Function unknown; possibly made before Structure 503 was built.
Associated features
Possibly a continuation of Nonstructure 513 (courtyard), Feature 7.
Excavation procedure
Exposed, not excavated.
Portion excavated
None.
Horizontal location
On boulder along the east wall of room; just north of doorway (Feature 5).
Vertical location
On top of bedrock, ranging from 16 to 36 cm above the structure floor (Surface 1).
Construction
Three small depressions were pecked into the boulder. They are arranged in a slight north-south arc; each basin roughly equidistant from next, approximately 8 to 9 cm apart. Dimensions (diameter x depth) of individual marks (cm) = 5 x 1, 3 x 1, 2.5 x 0.5.
Remodeling/ modification
Not Recorded
Thermal alteration
Not Recorded
Sooting
Not Recorded
Sealed
No
Preservation
Excellent.
Degree of preservation
Shape in plan view
Actual:  irregular.
Inferred: 
Shape in cross section
Actual:  irregular.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
28
Yes
Measurement is the length of the area that encompasses the three pecked depressions. See Database Map 4101.
Width
12
Yes
Measurement is the width of the area that encompasses the three pecked depressions. See Database Map 4101.
Height
No
Not applicable.
Depth
No
Depths of the bedrock modifications range from 0.5 to 1.0 cm; see description of feature construction.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture

Firepit (Feature 8) Top of page
General description
Layer of ash below Feature 3 (metate bin).
Use history
Informal pit built to contain fire(s), possibly for heat, light, and/or cooking. Constructed and used before the metate bin was built over it, effectively sealing it. This firepit may be associated with Structure 503 or with open space before the room was
Associated features
None.
Excavation procedure
Excavated as Stratum 2 of Feature 3; later designated a separate feature. Apparently not completely excavated. Not mapped.
Portion excavated
Unknown.
Horizontal location
Below southwest corner of Feature 3 (metate bin), near west wall of room.
Vertical location
The top of the layer of ash was found at the base of Feature 3 (metate bin). The ash continued at least 9 cm below that.
Construction
Not recorded.
Remodeling/ modification
Not Recorded
Thermal alteration
Yes. Burning on boulder face that makes up the west wall of the room, above firepit.
Sooting
Not Recorded
Sealed
Yes. Sealed by the construction of a metate bin (Feature 3) on top of it.
Preservation
Degree of preservation
Unknown.
Shape in plan view
Actual:  unknown.
Inferred: 
Shape in cross section
Actual:  unknown.
Inferred: 
Shape comments
Dimensions
 
Actual
Complete?
Inferred
Comments
Length
No
Not recorded.
Width
No
Not recorded.
Height
No
Not applicable.
Depth
9
No
Unknown if complete or not.
Stratigraphy
Stratum
Interpretation
Inclusions
Disturbance
Color
Texture
1
In-place burning, primary refuse.
Not recorded.
Not recorded.
Gray.
Ash.