QUIJOS SETTLEMENT DATASET--SURVEY OBSIDIAN ARTIFACTS

Survey Obsidian Artifacts

The data files OBSSURV.TXT and OBSSURV.XLS contain data on all the obsidian artifacts collected in the Quijos settlement survey. OBSSURV.TXT is an ASCII text file; OBSSURV.XLS contains the same data in the form of an Excel spreadsheet. Each line represents one artifact. There are 2482 lines in the text file, each with 20 variables separated by commas. The variables are, in the following order:

1	Lot number
2	East (UTM Prov S. America 1956 in meters)
3	North (UTM Prov S. America 1956 in meters)
4	Color: 1=Black 2=Green 3=Clear 4=Gray
5	Sub-color: 1=Black 2=Grey 3=Green 4=Bottle clear 5=Bottle clear with clouds 6=Cloudy 7=Banded 8=Smokey (translucent) 8.1=Smokey with clouds 9=Grey, Green/Bluish 10=Brown 11=Black Webbed 12=Mottled
6	Type: 5.1=Blades retouched to a Point 5.2=Notched Blade 5.3=Blade used as Drill 5.4=Stemmed blade 5.5=Ribbon Blade 5.6=Percussion Microblades (heavy rings) 5.7=Unidentified Blades 5.8=Blade Eccentrics: Bilobal and Trilobal 5.9=Blades as Scrapers 6.1=Bipolar Core 6.2=Sheared Flake 6.3=Scaled Flake 6.4=Scaled blade 6.5=Bipolar Flake 6.6=Bipolar flake from Prismatic Blade 6.7=Bipolar Core fragment 7.1=Projectile Points, Flake Tool 7.2=Unifaces, Flake Tool 7.3=Bifacially Flaked Flakes 7.4=Bifaces 7.5=Bifacial Scraper 8.1=Shaping Flakes 8.2= Thinning Flakes 8.3= Bifacial Reduction Flake 8.4= Sharpening Flake 8.5=Bifacial hinge removal 9.1=Flake Core: Casual 9.2=Flake Wedge 9.3=Flake used as core 9.4=Flake Core with Cortex 9.5=Flake used as a drill 10.1=Flake with platform 10.2=Flake without platform 10.3=Flake with cortex 10.4=Undetermined flake debitage 10.5=Flake hinge removal 10.6=Flake hinge removal with cortex 10.7=Notching flake 10.8=Shatter 11.1=Eccentrics 11.2=Other
7	Platform: 1=Single Facet 2=Multi-Facet 3=Ground 4=Scratched 5=Other 6=Unidentified (crushed) 7=Cortex
8	Section: 1=whole 2=proximal 3=medial 4=distal
9	Termination: 1=Step 2=Hinge 3=Feather
10	Cortex: 1=1-24% 2=25-49% 3=50-74% 4=75-99% 5=100%
11	Hinge: 0=absent 1=present
12	Length (mm)
13	Width (mm)
14	Thickness (mm)
15	Edge Pattern (see Clark 1988): 1=contiguous 2=overlapping 3=truncated 4=regularly spaced 5=irregularly spaced 6=crushing 7=abrasion 8=sinuous 9=continuous slicing 10=rounded and dull 11=chopping/bashing (very acute flake removals) 12=whittled 13-deep scallops
16	Face: 1=dorsal 2=ventral 3=both 4=undetermined
17	Margin: 1=left 2=right 3=both 4=distal termination 5=undetermined 6=proximal 7=dorsal
18	Weight (g)
19	Inclusion Size: 1=speck 2=grain 3=pebble
20	Weathered/Patinated: 1=present all over 2= present except for subsequent flake removal

The first line of the ASCII text file, for example, looks like this:

2,176981,9943098,3,5,10.1,6,1,3,,,12,7,1,,,,0.1,,

This indicates that the artifact is from Lot 2, which is located at UTM coordinates 176981 (East), 9943098 (North). Its color is clear, and its sub-color is bottle clear with clouds. It is a flake with a platform, which has been crushed. The flake is whole and has a feather termination. No cortex or hinge reported. The length of the flake is 12 mm; the width, 7 mm; and the thickness, 1 mm. No edge patters, face, or margins reported. It weights .1 grams, and shows no inclusions or weathering.

The last (or 2482th) line of the ASCII text file is:

2261,184268,9956784,3,5,6.5,6,1,3,,,18,19,3,2,2,2,1.5,,

This indicates that the artifact is from Lot 2261, which is located at UTM coordinates 184268 (East), 9956784 (North). Its color is clear, and its sub-color is bottle clear with clouds. It is a bipolar flake with a platform, which has been crushed.The flake is whole and has a feather termination. No cortex or hinge reported. The length of the flake is 18 mm; the width, 19 mm; and the thickness, 3 mm. It has an overlapping edge pattern in the ventral right margin. It weights 1.5 grams, and shows no inclusions or weathering.

Click here to download the file OBSSURV.TXT (133 KB) or the file OBSSURV.XLS (408 KB).

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