GeCo DENCA talk
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Transcript of GeCo DENCA talk
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Archaeological Site Potential within the Dominguez-Escalante
National Conservation Area
GeCo in the Rockies September, 2014 By Seth Frame
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Grand Junction Field Office
487 Sites
Uncompahgre Field Office
208 Sites
State Historical Preservation Office
1638 Sites and Isolates
Assembling the Data…
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679 Archaeological Sites
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Topographic Variables
Ecological Variables
Cultural Variables
Site and Survey Information
Biological Variables --------->
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Straight Distance to Permanent Water
In Meters
Cost Distance to Permanent Water
In Hours
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Tobler’s Hiking Function
• TIME(HOURS)TOCROSS 1 Meter or the reciprocal of Meters per Hour = 0.000166666*(EXP(3.5*(ABS(TAN(RADIANS(slope_deg))+.05))))
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Topographic Variables
Ecological Variables
Cultural Variables
Site and Survey Information
Biological Variables --------->
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21,845 Model points:
Created at an 1/8th mi interval.
3,793 Non-Site points: Within surveys but outside site
boundaries.
679 point selection:
Random selection of non-site points.
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Factor Analysis…
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Sensitivity Models…
Analytical Historic Sensitivity Model
Prehistoric Sensitivity Model
All Site Sensitivity Model
Traditional Historic Sensitivity Model
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Prehistoric Sensitivity Model
Sensitivity Area
Survey Acreage (mi²)
Sites Site Density per Mile²
Average Site Acreage
High 5,134 (8)
99 12.3 10
Medium 7,942 (12)
195 15.7 3.2
Low 26,995 (42)
276 6.5 1.7
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Analytical Historic Sensitivity Model
Sensitivity Area
Survey Acreage (mi²)
Sites Site Density per Mile²
Average Site Acreage
High 6,535 (10)
28 2.7 4.4
Medium 11,512 (18)
40 2.2 4.1
Low 22,124 (35)
41 1.2 2.0
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All Site Sensitivity Model
Sensitivity Area
Survey Acreage (mi²)
Sites Site Density per Mile²
Average Site Acreage
High 3,840 (6)
78 13 11.4
Medium 10,944 (17)
262 15 2.8
Low 25,258 (39)
339 9 2.3
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Traditional Historic Sensitivity Model
Sensitivity Area
Survey Acreage (mi²)
Sites Site Density per Mile²
Average Site Acreage
High 16,028 (25)
49 2.0 5.5
Medium 4,627 (7)
16 2.2 1.3
Low 19,692 (31)
44 1.4 2.7
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Analytical Model Traditional Model
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Thank you
Rand Greubel Jon Horn Matt Landt Jack Pfertsh Charlie Reed The Grand Junction and Uncompahgre BLM Field offices The rest of the staff at Alpine Archaeological Consultants
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